Basis of Design West Lebada LV04_v2

LVO4Jupiter

Drilling & Measurements OSC

BASIS OF DESIGN (ver 2)Client : Petrom

Well : LVO4Field : Delta - Lebada West

Rig : Jupiter

BASIS OF DESIGN

Client: Petrom

Field: Delta - Lebada WestRig: Jupiter

Well: LVO4

Hole Sections: 36'' 16'' 12.25" 8.5x9.125'' 6'' Version Drill. Prog.: 2

Version Plan: 3Date:

Prepared for: Operations Support CenterEng. Firat Ustun

Well Plan, BHA's, OSC Manager

Anticollision

BHA's, DD Manager

Anticollision

BHA's

Well Plan, BHA's, Project Manager

AnticollisionClient

The above client's signature implies agreement of all data present in the whole document that follows this first page20

20 Sep 08

Schlumberger D&M

MWD/LWD Manager

TABLE OF CONTENTS

- Well Data - Survey Program - Objectives and Recommendations - Plot, Plan and Plan Interpolated - Well Geometry - BHAs - Hydraulics - Magnetic Interference - Anticollision - Spider Plot

Drilling Program v1

WELL DATADrilling Program v1ClientField GL / Water DepthWellBoreholeTARGETS

SECTION [in]MD In / OutInterval TVD In / OutInc In / OutAz In / OutMax DLSCASING PROFILEOD / IDMD From / ToLengthWall T./GradeHYDRAULICSMud TypeMW PV / YPNozzles Flow /max SPP

Block weightWOB / TOBROP / RPMBHA'sBit typeBit ManufacturerBit ModelRotary SteerableMotor / Bent HousingGeosteeringRes-Gamma Ray-ECDMWDFormation Press while drillSonicDensity-Porosity-Cal

- GVR: LWD tool for Resistivity at the Bit measurement - ARC: LWD tool for measurements of resistivity, gamma ray annular pressure while drilling APWD (for ECD calculation) - ISonic: LWD tool for sonic measurements - SADN: LWD tool for density, porosity and caliper measurement

12.60 N80

4 1/2"4.5

2313 2947

Modifications applied:

36 8 1/2 x 9 1/8

N/A

Rotary

- PowerPulse: MWD tool for inclination / direction measurements, and real time transmission of surveys / LWD data to surface.

PowerDrive16 12 1/4

N/A N/A N/A

Drilling Program

Plan

m/h|

3 x 20, 1 x 22

P110

7.0

1242501.0

1.12 - 1.2 1.2 - 1.4 1.65-1.75

11.99

Bentonite

P1109.19P110

UltraDril

2362.0634

N 44 31 57.159, E 29 28 4.328N 4931161.800 m, E 457720.300 m

Surface Coord. Lat/LongSurface Coord. N/E

Rig 32.8 m relative to MSL-48.000 m relative to MSL

Rotary Table

9 5/8

0 1800.50

13 3/8

101.5

150.0150 501

1500

300.00

m

0

mm

deg 0

15015000

2947351 670

501 1100 1100 1910

2363

22-40

9.6250.0

13.3750.0

deg

in/3210-25

m30.0

163612.19

lpm | bar

deg/30m

ppg

mm

in

m

cP | lb/100ft2

klbDRILLING PARAMETERS

klb | kft·lb

1192

12 1/4 8 1/2 x 9 1/81171501 1171150

TVD [m]1872.801942.80

ShapeCircleCircle

Name1840.001910.00

4930630.004930240.00

SSTVD [m] NorthingTintaTalpa

Easting

459100.00458800.00

PetromDelta - Lebada WestLVO4LVO4

36

5.5 445015.5

165010 150

0

12 1/4

0

2.50180

44

11711171

7

2363

50.00

1852 185273.45 83.6873.45

6

584

PowerDrive6

15-25

N/A N/A N/A

T11 T11

A825 / 1.5PD675

RSX616MN/A

N/A

RSX613M

N/A

ReedHycalog

101.52.70 3.0

1120.0

68 1/2 x 9 1/8

Radius [m] Thickness [m]50.00

140.1 140.1 142.3

N/A

N/A

N/A

Motor

Version update:

PD475

ImPulseImPulse

TeleScopeGyroMWDN/A

N/A N/A N/A

N/A N/A

ARCVision

ReedHycalog ReedHycalog ReedHyacolog

N/AA965 / 1.5N/A

N/AGyroMWD

FloThruUltraDrill

20-2525-35 25-3535-501.3-1.35

30-40

Well Design / Well Geometry

Plan and WellBore Geometry

Drilling Program v1

Select and delete any previous pictures loadedClick on LC and select the .emf exported from PowerDraw

WELL FIELD STRUCTURE

Magnetic ParametersModel: Dip:

Mag Dec:Date:FS:

Surface LocationLat:Lon:

Northing:Easting:

Grid Conv:Scale Fact:

MiscellaneousSlot:Plan:

TVD Ref:Srvy Date:

Petrom

LVO4 Delta - Lebada West PFS-6 - Lebada

BGGM 2008 62.027°+5.083°

September 17, 200848407.1 nT

UTM CM 30E - WGS84, MetersN44 31 57.159E29 28 4.328

4931161.80 m457720.30 m

-0.37319667°0.9996219823

LVO4LV04 Rev3.0 fu 17Sep08

RKB (32.80 m above MSL)September 17, 2008

Quality Control

Date Drawn: Wed 06:55 PM September 17, 2008

Drawn by: F.Ustun

Checked by:

Client OK:

-175

0

175

350

525

700

875

1050

1225

1400

1575

1750

1925

2100

0 175 350 525 700 875 1050 1225 1400 1575 1750 1925 Vertical Section (m) Azim = 123.37°, Scale = 1(cm):175(m) Origin = 0 N/-S, 0 E/-W

Tie-In0 MD 0 TVD0.00° 180.00°az

Mud Line81 MD 81 TVD0.00° 180.00°az

30" Casing Point150 MD 150 TVD

Build 0.5°/30m160 MD 160 TVD0.00° 180.00°az

Hold490 MD 489 TVD5.50° 180.00°az

13 3/8" Casing Point501 MD 500 TVD

Build 1.50°/30m511 MD 510 TVD5.50° 180.00°az

Build 2.50°/30m600 MD 599 TVD9.97° 180.00°az

Hold1120 MD 1064 TVD44.00° 101.50°az


Build and Turn 2.70°/30m1850 MD 1589 TVD

44.00° 101.50°az

Hold2336 MD 1845 TVD

73.45° 140.10°az



73.45° 140.10°azHold2442 MD 1871 TVD80.14° 141.82°az

LVO4 Tinta2450 MD 1873 TVD80.14° 141.82°az

LVO4 Talpa2947 MD 1943 TVD83.68° 142.30°az

LV04 Rev3.0 fu 17Sep08

LVO4 Talpa

LVO4 Tinta

True North

Tot Corr (M->T +5.0830°)

Mag Dec (+5.083°)

Grid Conv (-0.37319667°)

True

Grid

Mag

-1050

-875

-700

-525

-350

-175

0

175

350

-350 -175 0 175 350 525 700 875 1050 1225 1400 1575<<< W Scale = 1(cm):175(m) E >>>


Build 0.5°/30m160 MD 160 TVD0.00° 180.00°az

Hold490 MD 489 TVD

5.50° 180.00°az


Build 1.50°/30m511 MD 510 TVD

5.50° 180.00°az

Build 2.50°/30m600 MD 599 TVD

9.97° 180.00°az


44.00° 101.50°az 9 5/8" Casing Point1171 MD 1100 TVD

Build and Turn 2.70°/30m1850 MD 1589 TVD44.00° 101.50°az

Hold2336 MD 1845 TVD73.45° 140.10°az



73.45° 140.10°az


80.14° 141.82°az

LVO4 Tinta2450 MD 1873 TVD

80.14° 141.82°az

LVO4 Talpa2947 MD 1943 TVD

83.68° 142.30°az


LVO4 Talpa

LVO4 Tinta

Comments Survey MD Inclination Azimuth TVD Sub-Sea TVD VS NS EW Latitude Longitude Easting Northing DLSTie-In 0.00 0.00 180.00 0.00 -32.80 0.00 0.00 0.00 N 44 31 57.159 E 29 28 4.328 457720.30 4931161.80 0.00

Mud Line 80.80 0.00 180.00 80.80 48.00 0.00 0.00 0.00 N 44 31 57.159 E 29 28 4.328 457720.30 4931161.80 0.0030" Casing Point 150.00 0.00 180.00 150.00 117.20 0.00 0.00 0.00 N 44 31 57.159 E 29 28 4.328 457720.30 4931161.80 0.00

Build 0.5°/30m 160.00 0.00 180.00 160.00 127.20 0.00 0.00 0.00 N 44 31 57.159 E 29 28 4.328 457720.30 4931161.80 0.00Hold 490.00 5.50 180.00 489.49 456.69 8.71 -15.83 0.00 N 44 31 56.646 E 29 28 4.328 457720.20 4931145.98 0.50

13 3/8" Casing Point 500.56 5.50 180.00 500.00 467.20 9.26 -16.84 0.00 N 44 31 56.613 E 29 28 4.328 457720.19 4931144.97 0.00Build 1.50°/30m 510.60 5.50 180.00 510.00 477.20 9.79 -17.80 0.00 N 44 31 56.582 E 29 28 4.328 457720.18 4931144.01 0.00Build 2.50°/30m 600.00 9.97 180.00 598.56 565.76 16.41 -29.83 0.00 N 44 31 56.192 E 29 28 4.328 457720.11 4931131.98 1.50

Hold 1120.00 44.00 101.50 1063.60 1030.80 218.31 -114.86 185.75 N 44 31 53.437 E 29 28 12.741 457905.23 4931045.77 2.489 5/8" Casing Point 1170.60 44.00 101.50 1100.00 1067.20 250.92 -121.87 220.19 N 44 31 53.210 E 29 28 14.300 457939.61 4931038.54 0.00

Build and Turn 2.70°/30m 1850.00 44.00 101.50 1588.72 1555.92 688.91 -215.96 682.67 N 44 31 50.161 E 29 28 35.246 458401.29 4930941.48 0.00Hold 2335.65 73.45 140.10 1845.00 1812.20 1087.71 -438.98 1013.31 N 44 31 42.934 E 29 28 50.219 458730.35 4930716.39 2.69

.7" Casing Point 2363.04 73.45 140.10 1852.80 1820.00 1112.85 -459.12 1030.15 N 44 31 42.282 E 29 28 50.982 458747.05 4930696.16 0.00Build and Turn 3.00°/30m 2373.04 73.45 140.10 1855.65 1822.85 1122.03 -466.47 1036.30 N 44 31 42.044 E 29 28 51.260 458753.15 4930688.76 0.00

Hold 2441.95 80.14 141.82 1871.39 1838.59 1185.94 -518.56 1078.52 N 44 31 40.356 E 29 28 53.172 458795.02 4930636.42 3.00LVO4 Tinta 2450.21 80.14 141.82 1872.80 1840.00 1193.66 -524.95 1083.55 N 44 31 40.149 E 29 28 53.399 458800.00 4930630.00 0.00LVO4 Talpa 2947.46 83.68 142.30 1942.80 1910.00 1659.93 -913.14 1386.20 N 44 31 27.571 E 29 29 7.102 459100.00 4930240.00 0.22

Critical Points

Name Latitude Longitude Northing Easting NS EW TVD SSTVD Shape DimensionsLVO4 Talpa N44 31 27.571 E29 29 7.102 4930240.00 459100.00 -913.14 1386.20 1942.80 1910.00 CIRCULAR Diameter: 100.00LVO4 Tinta N44 31 40.149 E29 28 53.399 4930630.00 458800.00 -524.95 1083.55 1872.80 1840.00 CIRCULAR Diameter: 100.00

Targets

LV04 Rev3.0 fu 17Sep08 ProposalReport Date: September 17, 2008 Survey / DLS Computation Method: Minimum Curvature / Lubinski

Client: Petrom Vertical Section Azimuth: 123.370°Field: Delta - Lebada West Vertical Section Origin: N 0.000 m, E 0.000 m

Structure / Slot: Jupiter TVD Reference Datum: RKBWell: LVO4 TVD Reference Elevation: 32.8 m relative to MSL

Borehole: LVO4 Sea Bed / Ground Level Elevation: -48.000 m relative to MSLUWI/API#: Magnetic Declination: 5.083°

Survey Name / Date: LV04 Rev3.0 fu 17Sep08 / September 17, 2008 Total Field Strength: 48407.077 nTTort / AHD / DDI / ERD ratio: 106.847° / 1758.76 m / 5.971 / 0.905 Magnetic Dip: 62.027°

Grid Coordinate System: UTM CM 30E - WGS84, Meters Declination Date: September 17, 2008Location Lat/Long: N 44 31 57.159, E 29 28 4.328 Magnetic Declination Model: BGGM 2008

Location Grid N/E Y/X: N 4931161.800 m, E 457720.300 m North Reference: True NorthGrid Convergence Angle: -0.37319667° Total Corr Mag North -> True North: +5.083°

Grid Scale Factor: 0.99962198 Local Coordinates Referenced To: Well HeadDrilling Program v1

Comments MeasuredDepth Inclination Azimuth TVD Vertical

Section NS EW DLS Northing Easting Latitude Longitude

( m ) ( deg ) ( deg ) ( m ) ( m ) ( m ) ( m ) ( deg/30 m ) ( m ) ( m )Tie-In 0.00 0.00 180.00 0.00 0.00 0.00 0.00 0.00 4931161.80 457720.30 N 44 31 57.159 E 29 28 4.328Mud Line 80.80 0.00 180.00 80.80 0.00 0.00 0.00 0.00 4931161.80 457720.30 N 44 31 57.159 E 29 28 4.32830" Casing Point 150.00 0.00 180.00 150.00 0.00 0.00 0.00 0.00 4931161.80 457720.30 N 44 31 57.159 E 29 28 4.328Build 0.5°/30m 160.00 0.00 180.00 160.00 0.00 0.00 0.00 0.00 4931161.80 457720.30 N 44 31 57.159 E 29 28 4.328Hold 490.00 5.50 180.00 489.49 8.71 -15.83 0.00 0.50 4931145.98 457720.20 N 44 31 56.646 E 29 28 4.328

13 3/8" Casing Point 500.56 5.50 180.00 500.00 9.26 -16.84 0.00 0.00 4931144.97 457720.19 N 44 31 56.613 E 29 28 4.328Build 1.50°/30m 510.60 5.50 180.00 510.00 9.79 -17.80 0.00 0.00 4931144.01 457720.18 N 44 31 56.582 E 29 28 4.328Build 2.50°/30m 600.00 9.97 180.00 598.56 16.41 -29.83 0.00 1.50 4931131.98 457720.11 N 44 31 56.192 E 29 28 4.328Hold 1120.00 44.00 101.50 1063.60 218.31 -114.86 185.75 2.48 4931045.77 457905.23 N 44 31 53.437 E 29 28 12.7419 5/8" Casing Point 1170.60 44.00 101.50 1100.00 250.92 -121.87 220.19 0.00 4931038.54 457939.61 N 44 31 53.210 E 29 28 14.300

Build and Turn 2.70°/30m 1850.00 44.00 101.50 1588.72 688.91 -215.96 682.67 0.00 4930941.48 458401.29 N 44 31 50.161 E 29 28 35.246Hold 2335.65 73.45 140.10 1845.00 1087.71 -438.98 1013.31 2.69 4930716.39 458730.35 N 44 31 42.934 E 29 28 50.219.7" Casing Point 2363.04 73.45 140.10 1852.80 1112.85 -459.12 1030.15 0.00 4930696.16 458747.05 N 44 31 42.282 E 29 28 50.982Build and Turn 3.00°/30m 2373.04 73.45 140.10 1855.65 1122.03 -466.47 1036.30 0.00 4930688.76 458753.15 N 44 31 42.044 E 29 28 51.260Hold 2441.95 80.14 141.82 1871.39 1185.94 -518.56 1078.52 3.00 4930636.42 458795.02 N 44 31 40.356 E 29 28 53.172

LVO4 Tinta 2450.21 80.14 141.82 1872.80 1193.66 -524.95 1083.55 0.00 4930630.00 458800.00 N 44 31 40.149 E 29 28 53.399LVO4 Talpa 2947.46 83.68 142.30 1942.80 1659.93 -913.14 1386.20 0.22 4930240.00 459100.00 N 44 31 27.571 E 29 29 7.102

Survey Type: Non-Def Proposal

Survey Error Model: SLB ISCWSA version 24 *** 3-D 95.00% Confidence 2.7955 sigmaSurveying Prog:

MD From ( m ) MD To ( m ) EOU Freq Survey Tool Type Borehole -> Survey0.00 80.80 1/30.00 SLB_GYRO-MWD-Depth Only LVO4 -> LV04 Rev3.0 fu 17Sep08

80.80 500.56 1/30.00 SLB_GYRO-MWD LVO4 -> LV04 Rev3.0 fu 17Sep08500.56 2947.46 1/30.00 SLB_MWD-STD LVO4 -> LV04 Rev3.0 fu 17Sep08

LV04 Rev3.0 fu 17Sep08 ProposalReport Date: September 17, 2008 Survey / DLS Computation Method: Minimum Curvature / Lubinski

Client: Petrom Vertical Section Azimuth: 123.370°Field: Delta - Lebada West Vertical Section Origin: N 0.000 m, E 0.000 m

Structure / Slot: Jupiter TVD Reference Datum: RKBWell: LVO4 TVD Reference Elevation: 32.8 m relative to MSL

Borehole: LVO4 Sea Bed / Ground Level Elevation: -48.000 m relative to MSLUWI/API#: Magnetic Declination: 5.083°

Survey Name / Date: LV04 Rev3.0 fu 17Sep08 / September 17, 2008 Total Field Strength: 48407.077 nTTort / AHD / DDI / ERD ratio: 106.847° / 1758.76 m / 5.971 / 0.905 Magnetic Dip: 62.027°

Grid Coordinate System: UTM CM 30E - WGS84, Meters Declination Date: September 17, 2008Location Lat/Long: N 44 31 57.159, E 29 28 4.328 Magnetic Declination Model: BGGM 2008

Location Grid N/E Y/X: N 4931161.800 m, E 457720.300 m North Reference: True NorthGrid Convergence Angle: -0.37319667° Total Corr Mag North -> True North: +5.083°

Grid Scale Factor: 0.99962198 Local Coordinates Referenced To: Well HeadDrilling Program v1

Comments MeasuredDepth Inclination Azimuth TVD Vertical

Section NS EW DLS Northing Easting Latitude Longitude

( m ) ( deg ) ( deg ) ( m ) ( m ) ( m ) ( m ) ( deg/30 m ) ( m ) ( m )Tie-In 0.00 0.00 180.00 0.00 0.00 0.00 0.00 0.00 4931161.80 457720.30 N 44 31 57.159 E 29 28 4.328Mud Line 80.80 0.00 180.00 80.80 0.00 0.00 0.00 0.00 4931161.80 457720.30 N 44 31 57.159 E 29 28 4.32830" Casing Point 150.00 0.00 180.00 150.00 0.00 0.00 0.00 0.00 4931161.80 457720.30 N 44 31 57.159 E 29 28 4.328Build 0.5°/30m 160.00 0.00 180.00 160.00 0.00 0.00 0.00 0.00 4931161.80 457720.30 N 44 31 57.159 E 29 28 4.328

180.00 0.33 180.00 180.00 0.03 -0.06 0.00 0.50 4931161.74 457720.30 N 44 31 57.157 E 29 28 4.328

210.00 0.83 180.00 210.00 0.20 -0.36 0.00 0.50 4931161.44 457720.30 N 44 31 57.147 E 29 28 4.328240.00 1.33 180.00 239.99 0.51 -0.93 0.00 0.50 4931160.87 457720.29 N 44 31 57.128 E 29 28 4.328270.00 1.83 180.00 269.98 0.97 -1.76 0.00 0.50 4931160.04 457720.29 N 44 31 57.102 E 29 28 4.328300.00 2.33 180.00 299.96 1.57 -2.85 0.00 0.50 4931158.95 457720.28 N 44 31 57.066 E 29 28 4.328330.00 2.83 180.00 329.93 2.31 -4.20 0.00 0.50 4931157.60 457720.27 N 44 31 57.022 E 29 28 4.328

360.00 3.33 180.00 359.89 3.20 -5.82 0.00 0.50 4931155.99 457720.26 N 44 31 56.970 E 29 28 4.328390.00 3.83 180.00 389.83 4.23 -7.69 0.00 0.50 4931154.11 457720.25 N 44 31 56.909 E 29 28 4.328420.00 4.33 180.00 419.75 5.41 -9.83 0.00 0.50 4931151.98 457720.24 N 44 31 56.840 E 29 28 4.328450.00 4.83 180.00 449.66 6.72 -12.22 0.00 0.50 4931149.58 457720.22 N 44 31 56.763 E 29 28 4.328480.00 5.33 180.00 479.54 8.19 -14.88 0.00 0.50 4931146.92 457720.20 N 44 31 56.676 E 29 28 4.328

Hold 490.00 5.50 180.00 489.49 8.71 -15.83 0.00 0.50 4931145.98 457720.20 N 44 31 56.646 E 29 28 4.32813 3/8" Casing Point 500.56 5.50 180.00 500.00 9.26 -16.84 0.00 0.00 4931144.97 457720.19 N 44 31 56.613 E 29 28 4.328Build 1.50°/30m 510.60 5.50 180.00 510.00 9.79 -17.80 0.00 0.00 4931144.01 457720.18 N 44 31 56.582 E 29 28 4.328

540.00 6.97 180.00 539.22 11.55 -20.99 0.00 1.50 4931140.81 457720.16 N 44 31 56.479 E 29 28 4.328570.00 8.47 180.00 568.95 13.76 -25.02 0.00 1.50 4931136.79 457720.14 N 44 31 56.348 E 29 28 4.328

Build 2.50°/30m 600.00 9.97 180.00 598.56 16.41 -29.83 0.00 1.50 4931131.98 457720.11 N 44 31 56.192 E 29 28 4.328630.00 10.31 166.04 628.10 19.81 -35.03 0.65 2.48 4931126.78 457720.72 N 44 31 56.024 E 29 28 4.357660.00 11.20 153.62 657.58 24.30 -40.25 2.59 2.48 4931121.55 457722.63 N 44 31 55.855 E 29 28 4.445690.00 12.51 143.38 686.94 29.87 -45.47 5.82 2.48 4931116.31 457725.83 N 44 31 55.686 E 29 28 4.592720.00 14.14 135.26 716.13 36.51 -50.68 10.34 2.48 4931111.07 457730.31 N 44 31 55.517 E 29 28 4.796

750.00 15.98 128.88 745.10 44.21 -55.88 16.14 2.48 4931105.84 457736.07 N 44 31 55.348 E 29 28 5.059780.00 17.97 123.83 773.80 52.95 -61.04 23.20 2.48 4931100.63 457743.09 N 44 31 55.181 E 29 28 5.379810.00 20.07 119.78 802.16 62.71 -66.18 31.51 2.48 4931095.44 457751.37 N 44 31 55.015 E 29 28 5.755840.00 22.24 116.47 830.14 73.49 -71.26 41.06 2.48 4931090.30 457760.88 N 44 31 54.850 E 29 28 6.188870.00 24.46 113.74 857.68 85.25 -76.30 51.83 2.48 4931085.20 457771.61 N 44 31 54.687 E 29 28 6.675

900.00 26.73 111.44 884.73 97.98 -81.26 63.80 2.48 4931080.15 457783.54 N 44 31 54.526 E 29 28 7.217930.00 29.03 109.48 911.25 111.65 -86.16 76.94 2.48 4931075.18 457796.65 N 44 31 54.367 E 29 28 7.813960.00 31.35 107.78 937.18 126.23 -90.97 91.24 2.48 4931070.27 457810.91 N 44 31 54.212 E 29 28 8.460990.00 33.70 106.30 962.47 141.71 -95.69 106.66 2.48 4931065.46 457826.29 N 44 31 54.059 E 29 28 9.159

1020.00 36.06 104.98 987.08 158.04 -100.31 123.18 2.48 4931060.73 457842.77 N 44 31 53.909 E 29 28 9.907

1050.00 38.43 103.81 1010.96 175.21 -104.82 140.76 2.48 4931056.11 457860.32 N 44 31 53.763 E 29 28 10.7031080.00 40.81 102.76 1034.07 193.17 -109.21 159.38 2.48 4931051.60 457878.90 N 44 31 53.621 E 29 28 11.5461110.00 43.20 101.80 1056.36 211.90 -113.47 178.99 2.48 4931047.21 457898.48 N 44 31 53.482 E 29 28 12.435

Hold 1120.00 44.00 101.50 1063.60 218.31 -114.86 185.75 2.48 4931045.77 457905.23 N 44 31 53.437 E 29 28 12.7419 5/8" Casing Point 1170.60 44.00 101.50 1100.00 250.92 -121.87 220.19 0.00 4931038.54 457939.61 N 44 31 53.210 E 29 28 14.300

Build and Turn 1850.00 44.00 101.50 1588.72 688.91 -215.96 682.67 0.00 4930941.48 458401.29 N 44 31 50.161 E 29 28 35.2461860.00 44.45 102.61 1595.89 695.41 -217.42 689.49 2.69 4930939.98 458408.10 N 44 31 50.114 E 29 28 35.5551890.00 45.86 105.84 1617.05 715.50 -222.65 710.10 2.69 4930934.61 458428.67 N 44 31 49.944 E 29 28 36.4881920.00 47.36 108.91 1637.66 736.45 -229.17 730.90 2.69 4930927.96 458449.41 N 44 31 49.733 E 29 28 37.4301950.00 48.93 111.84 1657.68 758.22 -236.95 751.84 2.69 4930920.05 458470.29 N 44 31 49.481 E 29 28 38.378

1980.00 50.57 114.62 1677.06 780.76 -245.99 772.87 2.69 4930910.88 458491.26 N 44 31 49.188 E 29 28 39.3312010.00 52.28 117.28 1695.77 804.01 -256.25 793.95 2.69 4930900.48 458512.27 N 44 31 48.855 E 29 28 40.2862040.00 54.05 119.81 1713.76 827.93 -267.73 815.04 2.69 4930888.87 458533.27 N 44 31 48.483 E 29 28 41.2412070.00 55.86 122.23 1730.98 852.47 -280.39 836.08 2.69 4930876.08 458554.22 N 44 31 48.073 E 29 28 42.1942100.00 57.73 124.54 1747.41 877.57 -294.20 857.04 2.69 4930862.13 458575.08 N 44 31 47.626 E 29 28 43.143

2130.00 59.63 126.77 1763.01 903.17 -309.14 877.85 2.69 4930847.06 458595.79 N 44 31 47.141 E 29 28 44.0852160.00 61.57 128.91 1777.74 929.22 -325.18 898.49 2.69 4930830.90 458616.31 N 44 31 46.622 E 29 28 45.0202190.00 63.54 130.96 1791.57 955.67 -342.27 918.90 2.69 4930813.69 458636.60 N 44 31 46.068 E 29 28 45.9442220.00 65.53 132.95 1804.47 982.44 -360.38 939.03 2.69 4930795.45 458656.61 N 44 31 45.481 E 29 28 46.8562250.00 67.56 134.88 1816.41 1009.50 -379.47 958.85 2.69 4930776.24 458676.30 N 44 31 44.863 E 29 28 47.753

2280.00 69.60 136.75 1827.36 1036.76 -399.50 978.31 2.69 4930756.09 458695.62 N 44 31 44.214 E 29 28 48.6342310.00 71.67 138.58 1837.31 1064.19 -420.42 997.37 2.69 4930735.05 458714.53 N 44 31 43.536 E 29 28 49.497

Hold 2335.65 73.45 140.10 1845.00 1087.71 -438.98 1013.31 2.69 4930716.39 458730.35 N 44 31 42.934 E 29 28 50.219.7" Casing Point 2363.04 73.45 140.10 1852.80 1112.85 -459.12 1030.15 0.00 4930696.16 458747.05 N 44 31 42.282 E 29 28 50.982

Build and Turn 3.00°/30m 2373.04 73.45 140.10 1855.65 1122.03 -466.47 1036.30 0.00 4930688.76 458753.15 N 44 31 42.044 E 29 28 51.260

2400.00 76.06 140.78 1862.74 1146.90 -486.53 1052.87 3.00 4930668.61 458769.58 N 44 31 41.394 E 29 28 52.0102430.00 78.98 141.53 1869.22 1174.79 -509.34 1071.23 3.00 4930645.69 458787.79 N 44 31 40.655 E 29 28 52.842

Hold 2441.95 80.14 141.82 1871.39 1185.94 -518.56 1078.52 3.00 4930636.42 458795.02 N 44 31 40.356 E 29 28 53.172LVO4 Tinta 2450.21 80.14 141.82 1872.80 1193.66 -524.95 1083.55 0.00 4930630.00 458800.00 N 44 31 40.149 E 29 28 53.399

2460.00 80.21 141.83 1874.47 1202.81 -532.54 1089.52 0.22 4930622.38 458805.91 N 44 31 39.903 E 29 28 53.670

2490.00 80.42 141.86 1879.52 1230.86 -555.79 1107.79 0.22 4930599.02 458824.03 N 44 31 39.150 E 29 28 54.4972520.00 80.63 141.89 1884.46 1258.92 -579.07 1126.06 0.22 4930575.63 458842.14 N 44 31 38.396 E 29 28 55.3242550.00 80.85 141.91 1889.29 1287.00 -602.37 1144.33 0.22 4930552.22 458860.25 N 44 31 37.641 E 29 28 56.1512580.00 81.06 141.94 1894.00 1315.08 -625.69 1162.60 0.22 4930528.79 458878.36 N 44 31 36.885 E 29 28 56.9782610.00 81.27 141.97 1898.61 1343.18 -649.04 1180.86 0.22 4930505.33 458896.47 N 44 31 36.128 E 29 28 57.806

2640.00 81.49 142.00 1903.11 1371.29 -672.41 1199.13 0.22 4930481.85 458914.57 N 44 31 35.371 E 29 28 58.6332670.00 81.70 142.03 1907.49 1399.41 -695.80 1217.40 0.22 4930458.35 458932.68 N 44 31 34.613 E 29 28 59.4602700.00 81.91 142.06 1911.77 1427.54 -719.21 1235.66 0.22 4930434.83 458950.78 N 44 31 33.855 E 29 29 0.2862730.00 82.13 142.09 1915.93 1455.68 -742.65 1253.92 0.22 4930411.28 458968.88 N 44 31 33.095 E 29 29 1.1132760.00 82.34 142.12 1919.98 1483.83 -766.11 1272.18 0.22 4930387.72 458986.98 N 44 31 32.335 E 29 29 1.940

2790.00 82.56 142.15 1923.93 1511.99 -789.58 1290.43 0.22 4930364.13 459005.08 N 44 31 31.575 E 29 29 2.7662820.00 82.77 142.17 1927.76 1540.16 -813.08 1308.69 0.22 4930340.52 459023.17 N 44 31 30.813 E 29 29 3.5932850.00 82.98 142.20 1931.48 1568.34 -836.60 1326.94 0.22 4930316.90 459041.26 N 44 31 30.051 E 29 29 4.4192880.00 83.20 142.23 1935.09 1596.52 -860.14 1345.18 0.22 4930293.25 459059.34 N 44 31 29.289 E 29 29 5.2452910.00 83.41 142.26 1938.59 1624.72 -883.69 1363.42 0.22 4930269.58 459077.43 N 44 31 28.525 E 29 29 6.071

2940.00 83.62 142.29 1941.97 1652.92 -907.27 1381.66 0.22 4930245.89 459095.50 N 44 31 27.761 E 29 29 6.897LVO4 Talpa 2947.46 83.68 142.30 1942.80 1659.93 -913.14 1386.20 0.22 4930240.00 459100.00 N 44 31 27.571 E 29 29 7.102

Survey Type: Non-Def Proposal

Survey Error Model: SLB ISCWSA version 24 *** 3-D 95.00% Confidence 2.7955 sigmaSurveying Prog:

MD From ( m ) MD To ( m ) EOU Freq Survey Tool Type Borehole -> Survey0.00 80.80 1/30.00 SLB_GYRO-MWD-Depth Only LVO4 -> LV04 Rev3.0 fu 17Sep08

80.80 500.56 1/30.00 SLB_GYRO-MWD LVO4 -> LV04 Rev3.0 fu 17Sep08500.56 2947.46 1/30.00 SLB_MWD-STD LVO4 -> LV04 Rev3.0 fu 17Sep08

Wellbore Geometry Report

Air (32.8m)Water (48.0 m)

36.0in 30.0in Client: Petrom150.0m 150.0m Field: Delta - Lebada West

Structure: JupiterWell: LVO4

Borehole: LVO416.0in 13.375in Geometry: WBG

501.0m 501.0m

Hole ProfileHole Size From To Length

in m m mAir 0.0 32.8 32.8

Water 32.8 80.8 48.036 80.8 150.0 69.216 150.0 501.0 351.0

12.25 501.0 1171.0 670.012.25in 9.625in 9.125 1171.0 2363.0 1192.0

1171.0m 1171.0m 6 2363.0 2947.0 584.0

TubularsCasing OD ID Lin Wt Grade From To LengthString in in kg/m m m m

30" Casing String 30.0 28.5 348.7 B 0.0 150.0 150.013 3/8" Casing Str 13.375 12.415 101.2 C-75 0.0 501.0 501.09 5/8" Casing Strin 9.625 8.681 69.9 C-75 0.0 1171.0 1171.07" Casing String 7.0 6.276 38.7 C-75 1120.0 2363.0 1243.04 1/2" Casing Strin 4.5 3.251 2313.0 2947.0 634.0 4 1/2" Casing 4.5 3.376 35.3 L-80 2313.0 2813.0 500.0 4 1/2" Casing 4.5 3.74 25.3 C-75 2813.0 2947.0 134.0

9.125in 7.0in2363.0m 2363.0m

6.0in 4.5in Quality Control2947.0m 2947.0m Created By: fustun Date: 19-Sep-2008<-HOLE Drilling Program v1 Checked By: Date:

Drilling Program v1

PHASE 16""

16" section will be drilled from 150 meters to the 13 3/8" casing point of 501 meters. The section will be drilled using 9 5/8" Motor BHA with GyroMWD tool. The main aim of the section is to nudge away in southern direction to move away from the offset wells.

The proposed flow rate for this phase of the section is 3600 lpm (950 gpm). However, due to hole size, flow rate is below the ctritical transport rate and extra measures like pumping viscous sweeps or extra circulation may help hole cleaning. The bit has 3x20 and 1x18 nozzles and has 1.44 HSI.

For motor, a 1.5 degree bent motor is propsed to be able to rotate the motor at the curve sections which will help cleaning the hole. The bent rate will also beneficial to achieve the relatively high DLS in the soft top hole section.

Flow rate specification of tools in this BHA are: A965 PowerPak motor : 600 - 1200 gpm Gyro MWD : max 1000 gpm

Cum. Len. (m)

5-1/2 " 21.90 DPS, 10% Wear 167.66 PetromWell: LVO4Rig: Jupiter

Field: Delta - Lebada West3 x 5 1/2" HWDP (3 joints) 157.66 Borehole: LVO4

BHA: BHA #01_16" BHA Motor+GMWD_16_Sep

Crossover 130.20 BHA DESCRIPTION

ELEMENT LENGTH (m) OD (in) ID (in) MAX OD (in)16" Tricone Bit 0.44 16.00 3.75 16.00

4x8 " Drill Collar (4 joints) (4 joi 129.06 A962M5640XP (1.5 deg) 9.70 9.63 7.88 15.758" NM Float Sub 0.78 8.00 2.83 8.0015 1/2'' NM Stab 1.81 8.00 3.00 15.50GyroMWD 9.43 8.00 3.75 8.008" Pulser Sub 1.92 8.00 3.75 8.007 x 8'' Drill Collar (7 joints 63.63 8.25 2.81 8.25

8 " Hydraulic Jar 92.57 8 " Hydraulic Jar 4.86 8.00 3.00 8.004x8 " Drill Collar (4 joints) 36.49 8.25 2.81 8.25Crossover 1.14 6.75 2.88 6.753 x 5 1/2" HWDP (3 joints) 27.46 5.50 3.25 7.255-1/2 " 21.90 DPS, 10% We 10.00 5.43 4.78 7.50

7 x 8'' Drill Collar (7 joints) (6 joi 87.71

8" Pulser Sub 24.08Bit to Direction & Inclination Sensor = 14.08 m

DRILLING OVERVIEW

GyroMWD 22.16

15 1/2'' NM Stab 12.73

8" NM Float Sub 10.92

A962M5640XP (1.5 deg) 10.14 Depth in: Depth out: 150 mInclination in: 0.0° To: 0.0°

Direction in: 0° To: 0°16" Tricone Bit 0.44 Total Drilled 150 m Dogleg: 0.00

FlowRate [gpm]: EDI Az err:EDI Δ |B|: EDI Δ Dip:

Quality ControlCreated by: fustun Date: 19-Sep-08Checked by: Date:

Drilling Program v1

BHA Data SheetBHA # BHA #01_16" BHA Motor+GMWD_16_Sep_08 Date September 18, 2008

Field Delta - Lebada West Well LVO4Structure Jupiter Borehole LVO4

Drilling Program v1

Item NameVendor/Model Serial #

Fish. NeckOD (in)/

Length (m)OD (in)/ID (in)

Max OD(in)

Bottom/Top Connection

Length(m)

Cum.Length

(m)1 16" Tricone Bit Reed Hycalog AL 2611 9.25 16.00 0.44 0.44

3.75 7.63 Reg Pin2 A962M5640XP (1.5 deg) Schlumberger 5950 9.63 15.75 7.63 Reg Box 9.70 10.14

A962M5640XP 7.88 6.63 Reg Box3 8" NM Float Sub Schlumberger 32115-10 8.00 8.00 6.63 Reg Pin 0.78 10.92

2.83 6.63 Reg Box4 15 1/2'' NM Stab Schlumberger 10236A 8.00 15.50 6.63 Reg Pin 1.81 12.73

3.00 6.63 Reg Box5 GyroMWD Scientific Drilling 8.00 8.00 6.63 Reg Pin 9.43 22.16

GMWD 3.75 6.63 Reg Box6 8" Pulser Sub Scientific Drilling 74016 8.00 8.00 8.00 6.63 Reg Pin 1.92 24.08

8" Non Mag DC 1.92 3.75 6.63 Reg Box7 7 x 8'' Drill Collar (7 joints) (6 jo GSP 8.25 8.25 6.63 Reg Pin 63.63 87.71

2.81 6.63 Reg Box8 8 " Hydraulic Jar HE 8.00 8.00 6.63 Reg Pin 4.86 92.57

Hydra-Jar 3.00 6.63 Reg Box9 4x8 " Drill Collar (4 joints) (4 jo GSP 8.25 8.25 6.63 Reg Pin 36.49 129.06

2.81 6.63 Reg Box10 Crossover GSP 6.75 6.75 6.63 Reg Pin 1.14 130.20

2.88 5.50 FH Box11 3 x 5 1/2" HWDP (3 joints) GSP 5.50 7.25 5.50 FH Pin 27.46 157.66

3.25 5.50 FH Box12 5-1/2 " 21.90 DPS, 10% Wear GSP 5.43 7.50 5.50 FH Pin 10.00 167.66

5.5,21.9,10% Wear 4.78 5.50 FH Box

Total Weight (kgf) 34425 Total Len. 167.66Below Jar (kgf) 21753.8

BHA Comments:

Stabilizer Sensor Bit NozzlesBlade Length (m) Mid-Pt. To Bit (m) Type Distance To Bit (m) Count Size(mm)

0.32 1.17 D&I 14.08 1 20.000.52 11.65 3 22.00

Bend To Bottom TFA (mm2) 916.43Bent Housing Angle (deg) Connection (m)

1.50 2.81 Quality Control

Created By: fustun

Checked By:

HYDRAULICS - SUMMARY

Company Name: Petrom P-T: Off Pressure Drop SummaryField: Delta - Lebada West Mud Wt: 1.200 g/cm3 Surf. Eqpt: 9 bar

Structure: PV: 20.0 cP * Inside Drillstr. 40 barWell: LVO4 YP: 35.0 lbf/100ft2 Tools: 11 bar

Location: K: 1621.9 eq.cP Motor/RSS: 38 barBorehole: LVO4 n: 0.447 Bit Nozzles: 38 barOperator: Fann 3: 0.0 lbf/100ft2 * Annulus: 1 bar

District: Fann 6: 0.0 lbf/100ft2 Chokeline: barBHA Data: BHA #01_16" BHA Motor+GMWD_16_S Fann 100: 0.0 lbf/100ft2 Hyd Imbalance: 0 bar

Wellbore Data: WBG Fann 200: 0.0 lbf/100ft2 TOTAL: 138 barSurvey Data: LV04 Rev3.0 fu 17Sep08 Fann 300: 55.0 lbf/100ft2 (Actual):

Date: 20-Sep-2008 17:41 Fann 600: 75.0 lbf/100ft2 *Including TJ losses (10%) and Cuttings (Annulus)

Model: Power Law Bit Optimization Flowrate: 3600 L/min Bit Flowrate: 3420 L/min** ECD at Bit: 1.2267 g/cm3 Depth In: m Jet Velocity: 75.6 m/s** ECD at Shoe: 1.2175 g/cm3 Depth Out: m Bit HSI: 1.44 hp/in2User Depth: 0.0 m Bit TVD: 500.4 m Jet Imp.Force: 5169.9 N** ECD at Depth: 1.2000 g/cm3 Bit MD: 501.0 m % Hyd Pow: 27.60** ECD's are corrected for Tool Joints and cuttings

BHA Description *Including TJ losseBorehole descriptionElement Length ID OD Cum Len * Press Drop Element Length ID Cum Len

m in in m bar m in m16" Tricone Bit + nozz 0.44 3.75 9.25 0.44 38.0 30" Casing 150.00 28.50 150.00A962M5640XP 9.70 7.88 9.63 10.14 38.0 Open Hole 351.00 16.00 501.008" NM Float Sub 0.78 2.83 8.00 10.92 0.215 1/2'' NM Stab 1.81 3.00 8.00 12.73 0.3GyroMWD 9.43 3.75 8.00 22.16 11.38" Pulser Sub 1.92 3.75 8.00 24.08 0.17 x 8'' Drill Collar (7 jo 63.63 2.81 8.25 87.71 14.18 " Hydraulic Jar 4.86 3.00 8.00 92.57 0.84x8 " Drill Collar (4 jo 36.49 2.81 8.25 129.06 8.1Crossover 1.14 2.88 6.75 130.20 0.23 x 5 1/2" HWDP 27.46 3.25 5.50 157.66 3.35-1/2 " 21.90 DPS, 10 343.34 4.78 5.43 501.00 13.1

Bit Details Reamer Surface Equipment : 3Type: Milled Tooth Type: Length ID

Bit Diameter: 16.000 in Diameter: 0.000 in m inTFA: 754.1 mm2 TFA: Standpipe: 14 4.00

Nozzles (1/32in) 1x18, 3x20 Rotary Hose: 17 3.00Swivel: 2 2.50Kelly: 12 3.25Effective: 146 3.83

Motor DetailsMotor: A962M5640XP Hydraulic Thrust: 13.2 1000 kgf Maximum WOB: 35.3 1000 kgf

Bearing Flow: 5.0 % Bearing Capacity: 22.1 1000 kgf Maximum Overpull: 8.8 1000 kgfWear: 0.0 %

Rotor Nozzle: 0 in/32 On-Bottom RPM: 105.9 rpm On-Bottom Pressure Drop: 38.0 barMin Flowrate: 2271.2 L/min WOB: 21.5 1000 kgf Off-Bottom Pressure Drop: 24.0 barMax Flowrate: 4542.5 L/min DTOR: 6867.0 N.m

Bearing Flowrate: 180.0 L/min Delta P: 14.0 bar Stall Nozzle Flowrate: 0.0 L/minNozzle Flowrate: 0.0 L/min Stall Motor Flowrate: 3600.0 L/minMotor Flowrate: 3600.0 L/min Mechanical HP: 76.2 kW Stall WOB: 105.7 1000 kgf

Optimum HP: 161.4 kW Stall DTOR: 33706.0 N.mRSS Flowrate: L/min Efficiency: 47.2 % Stall Pressure Drop: 92.7 barRSS Actuator Flow: %

Cuttings Hole Cleaning Flow below critical rateCuttings Diameter: 0.50 in RPM: 50 Drilling Program v1

Cuttings Density: 2.60 g/cm3 Critical Rate: 6837.7 L/min Quality Control: Date:ROP: 18.3 m/h Annular Flow: 3600.0 L/min Created By: Firat Ustun 20-Sep-08

Cutt. Concentration: 1.10 % by Vol Critical MD: 150 m Checked By:Bit ECD Increase: 0.02 g/cm3 Hole Inclination: 0 deg

HYDRAULICS - SENSITIVITY

BHA Data: BHA #01_16" BHA Motor+GMWD_16_Sep_08Wellbore Data: WBG

Survey Data: LV04 Rev3.0 fu 17Sep08Date: 20-Sep-2008 17:41 Drilling Program v1

Pump Flowrate: 3220 3296 3372 3448 3524 3600 3676 3752 3828 3904 3980 L/minReamer flowrate: L/minMotor Pwr Section Flow: 3220 3296 3372 3448 3524 3600 3676 3752 3828 3904 3980 L/minMotor Bearing Flow: 161 165 169 172 176 180 184 188 191 195 199 L/minBit Flowrate: 3059 3131 3203 3276 3348 3420 3492 3564 3637 3709 3781 L/min

Pressure Drop:Surf. Eqpt: 7 8 8 8 8 9 9 9 10 10 10 bar

Inside Drillstring: 34 35 36 38 39 40 42 43 44 46 47 barMWD/LWD: 10 10 11 11 11 11 12 12 12 12 12 barMotor/RSS: 34 35 36 37 37 38 39 40 40 41 42 barBit Nozzles: 30 32 33 35 36 38 40 41 43 45 46 bar

Annulus: 1 1 1 1 1 1 1 1 1 1 1 barChokeline: bar

Hydrostatic Imbalance: 1 1 1 1 1 1 1 1 1 1 1 barTOTAL: 117 121 125 129 133 138 142 146 151 155 160 bar

ECD: (Including TJ losses and cuttings effect at an ROP of 18.29 m/h)ECD at Bit: 1.228 1.228 1.227 1.227 1.227 1.227 1.226 1.226 1.226 1.226 1.226 g/cm3

ECD at Shoe: 1.219 1.219 1.219 1.218 1.218 1.218 1.217 1.217 1.217 1.216 1.216 g/cm3ECD at depth (0 m): 1.200 1.200 1.200 1.200 1.200 1.200 1.200 1.200 1.200 1.200 1.200 g/cm3

Bit Optimization TFA : 754.1 mm2 Nozzles: 1x18, 3x20 /32 inBit Flowrate: 3059 3131 3203 3276 3348 3420 3492 3564 3637 3709 3781 L/minJet Velocity: 68 69 71 72 74 76 77 79 80 82 84 m/s

Max Bit HPSI: 1.03 1.11 1.19 1.27 1.35 1.44 1.54 1.64 1.74 1.84 1.95 kWMax Jet Impact Force: 4136 4334 4536 4743 4954 5170 5390 5616 5845 6080 6319 N

Hydraulic Power at Bit: 25.9 26.2 26.6 26.9 27.3 27.6 27.9 28.2 28.5 28.8 29.1 %

Reamer No reamerReamer Nozzle Flowrate: L/min

Percent of flow: %Pressure loss: bar

Jet Velocity: m/sHydraulic Power: %

Drilling Program v1

PHASE 12""

12" section will be drilled from 501 meters to the 9 5/8" casing point of 1171 meters. The section will be drilled using 8 1/4" Motor BHA with PowerPulse. The main aim of the section is to build angle to 44 degrees and turn to azimuth of 101.5 degrees.

The proposed flow rate for this phase of the section is 2900 lpm (760 gpm). However, due to hole size, flow rate is below the ctritical transport rate and extra measures like pumping viscous sweeps or extra circulation may help hole cleaning. The bit has 3x22 nozzles and has 1.66 HSI.

For motor, a 1.5 degree bent motor is propsed to be able to rotate the motor at the curve sections which will help cleaning the hole. The bent rate will also beneficial to achieve the relatively high DLS in the soft top hole section. With current BHA configuration and 9 tonnes WOB (rotating), the jar will be in tension and approximately 20 meters away. Neutral point will be close to the jar between 9 and 12 tonnes of WOB.

While sliding with 6 tonnes WOB, neutral will be approximately 30 meters away from the jar and jar will be in tension. Neutral point will be close to the jar between 7 and 9 tonnes of WOB

Flow rate specification of tools in this BHA are: A800 PowerPak motor : 300 - 900 gpm Gyro MWD : max 1000 gpm

Cum. Len. (m)

5-1/2 " 21.90 DPS, Premium 153.23 PetromCrossover 143.23 Well: LVO4

Rig: JupiterField: Delta - Lebada West

4 x 5" HWDP (4 joints) 142.23 Borehole: LVO4

BHA: BHA #02 - 12 1/4" Motor + GMWD BHA 1

BHA DESCRIPTION

Hydraulic Jar 106.23 ELEMENT LENGTH (m) OD (in) ID (in) MAX OD (in)12 1/4 " Bit 0.44 12.25 3.25 12.25A800M4553XP 8.92 8.25 6.25 12.138" NM Float Sub 0.80 8.00 2.81 8.0012" NM Stabilizer 1.67 8.00 2.81 11.75GyroMWD 9.43 8.00 3.75 8.00

4 x 5" HWDP (4 joints) 96.73 8" Pulser Sub 1.92 8.00 3.75 8.008" NM Collar 9.55 8.00 2.81 8.003 x 8" Drill Collars (3 joints 27.00 8.00 3.00 8.00

Crossover 60.73 Crossover 1.00 8.00 2.81 8.004 x 5" HWDP (4 joints) 36.00 5.00 3.00 6.50Hydraulic Jar 9.50 6.50 2.75 6.50

3 x 8" Drill Collars (3 joints) 59.73 4 x 5" HWDP (4 joints) 36.00 5.00 3.00 6.50Crossover 1.00 7.50 3.00 7.505-1/2 " 21.90 DPS, Premium 10.00 5.36 4.78 7.50

8" NM Collar 32.73

Bit to Direction & Inclination Sensor = m8" Pulser Sub 23.18

DRILLING OVERVIEW

GyroMWD 21.26

12" NM Stabilizer 11.838" NM Float Sub 10.16

A800M4553XP 9.36 Depth in: 1143 m Depth out: 1978 mInclination in: 23.6° To: 52.6°Direction in: 41° To: 37°

12 1/4 " Bit 0.44 Total Drilled 836 m Dogleg: 3.50FlowRate [gpm]: EDI Az err: 0.28°

EDI Δ |B|: 461 nT EDI Δ Dip: 0.08°

Quality ControlCreated by: fustun Date: 19-Sep-08Checked by: Date:

Drilling Program v1

BHA Data SheetBHA # BHA #02 - 12 1/4" Motor + GMWD BHA 19Sep08 Date September 19, 2008


Drilling Program v1

19S Item NameVendor/Model Serial #

Fish. NeckOD (in)/


Max OD(in)


Length(m)

Cum.Length

(m)1 12 1/4 " Bit Reed Hycalog WP6432 8.00 12.25 0.44 0.44

TC11P 3.25 6.63 Reg Pin2 A800M4553XP Schlumberger 8.25 12.13 6.63 Reg Box 8.92 9.36

A800M4553XP 6.25 6.63 Reg Box3 8" NM Float Sub Schlumberger 32115-10 8.00 8.00 6.63 Reg Pin 0.80 10.16

2.81 6.63 Reg Box4 12" NM Stabilizer Schlumberger 41615 8.00 11.75 6.63 Reg Pin 1.67 11.83

0.71 2.81 6.63 Reg Box5 GyroMWD Scientific Drilling 8.00 8.00 6.63 Reg Pin 9.43 21.26

GMWD 3.75 6.63 Reg Box6 8" Pulser Sub Scientific Drilling 74016 8.00 8.00 8.00 6.63 Reg Pin 1.92 23.18

8" Non Mag DC 1.92 3.75 6.63 Reg Box7 8" NM Collar Schlumberger 2894 8.00 8.00 6.63 Reg Pin 9.55 32.73

2.81 6.63 Reg Box8 3 x 8" Drill Collars (3 joints) 8.00 8.00 6.63 Reg Pin 27.00 59.73

3.00 6.63 Reg Box9 Crossover 8.00 8.00 6.63 Reg Pin 1.00 60.73

2.81 4.50 NC50 (4 1/2 IF) Box10 4 x 5" HWDP (4 joints) 5.00 6.50 4.50 NC50 (4 1/2 IF) Pin 36.00 96.73

3.00 4.50 NC50 (4 1/2 IF) Box11 Hydraulic Jar HE 6.50 6.50 4.50 NC50 (4 1/2 IF) Pin 9.50 106.23

Hydra-Jar 2.75 4.50 NC50 (4 1/2 IF) Box12 4 x 5" HWDP (4 joints) 5.00 6.50 4.50 NC50 (4 1/2 IF) Pin 36.00 142.23

3.00 4.50 NC50 (4 1/2 IF) Box13 Crossover 7 1/2 7.50 4.50 NC50 (4 1/2 IF) Pin 1.00 143.23

3 5.50 FH Box

14 5-1/2 " 21.90 DPS, Prem. 5 21/59 7.50 5.50 FH Pin 10.00 153.235.5,21.9,Premium 4 7/9 5.50 FH Box


BHA Comments:


0.41 1.05 3 22.000.55 10.85


Quality Control

Created By: fustun

Checked By:





District: Fann 6: 0.0 lbf/100ft2 Chokeline: barBHA Data: BHA #02 - 12 1/4" Motor + GMWD BHA Fann 100: 0.0 lbf/100ft2 Hyd Imbalance: 0 bar





m in in m bar m in m12 1/4 " Bit + nozz 0.44 3.25 8.00 0.44 31.7 13 3/8" Casing 501.00 12.41 501.00A800M4553XP 8.92 6.25 8.25 9.36 58.4 Open Hole 670.00 12.25 1171.008" NM Float Sub 0.80 2.81 8.00 10.16 0.212" NM Stabilizer 1.67 2.81 8.00 11.83 0.4GyroMWD 9.43 3.75 8.00 21.26 9.18" Pulser Sub 1.92 3.75 8.00 23.18 0.18" NM Collar 9.55 2.81 8.00 32.73 2.33 x 8" Drill Collars 27.00 3.00 8.00 59.73 5.0Crossover 1.00 2.81 8.00 60.73 0.24 x 5" HWDP 36.00 3.00 5.00 96.73 6.7Hydraulic Jar 9.50 2.75 6.50 106.23 2.64 x 5" HWDP 36.00 3.00 5.00 142.23 6.7Crossover 1.00 3.00 7.50 143.23 0.25-1/2 " 21.90 DPS, Pr 1027.77 4.78 5.36 1171.00 41.2

Bit Details Reamer Surface Equipment : 3Type: Milled Tooth Type: Length ID


Nozzles (1/32in) 3x22 Rotary Hose: 17 3.00Swivel: 2 2.50Kelly: 12 3.25Effective: 146 3.83

Motor DetailsMotor: A800M4553XP Hydraulic Thrust: 8.9 1000 kgf Maximum WOB: 29.5 1000 kgf

Bearing Flow: 5.0 % Bearing Capacity: 20.6 1000 kgf Maximum Overpull: 11.7 1000 kgfWear: 0.0 %

Rotor Nozzle: 0 in/32 On-Bottom RPM: 195.0 rpm On-Bottom Pressure Drop: 58.4 barMin Flowrate: 1135.6 L/min WOB: 12.6 1000 kgf Off-Bottom Pressure Drop: 44.4 barMax Flowrate: 3406.9 L/min DTOR: 3082.1 N.m

Bearing Flowrate: 145.0 L/min Delta P: 14.0 bar Stall Nozzle Flowrate: 0.0 L/minNozzle Flowrate: 0.0 L/min Stall Motor Flowrate: 2900.0 L/minMotor Flowrate: 2900.0 L/min Mechanical HP: 63.0 kW Stall WOB: 80.8 1000 kgf

Optimum HP: 172.5 kW Stall DTOR: 19734.3 N.mRSS Flowrate: L/min Efficiency: 36.5 % Stall Pressure Drop: 134.1 barRSS Actuator Flow: %





BHA Data: BHA #02 - 12 1/4" Motor + GMWD BHA 19Sep08 Wellbore Data: WBG


Pump Flowrate: 2520 2596 2672 2748 2824 2900 2976 3052 3128 3204 3280 L/minReamer flowrate: L/minMotor Pwr Section Flow: 2520 2596 2672 2748 2824 2900 2976 3052 3128 3204 3280 L/minMotor Bearing Flow: 126 130 134 137 141 145 149 153 156 160 164 L/minBit Flowrate: 2394 2466 2538 2611 2683 2755 2827 2899 2972 3044 3116 L/min







Bit Optimization TFA : 718.5 mm2 Nozzles: 3x22 /32 inBit Flowrate: 2394 2466 2538 2611 2683 2755 2827 2899 2972 3044 3116 L/minJet Velocity: 56 57 59 61 62 64 66 67 69 71 72 m/s






DRILLSTRING ANALYSIS SUMMARY REPORT

Client: PetromField: Delta - Lebada WestRig: JupiterWell: LVO4Bore Hole: LVO4Engineer: FUstunDate: September 19, 2008 Drilling Program v1

BHA & WELLBORE DATABHA Data: BHA #02 - 12 1/4" Motor + GMWD BHA 19Sep08 Survey Data: LV04 Rev3.0 fu 17Sep08 (with tortuosity)Wellbore Data: WBG

DRILLING PARAMETERSOperation Mode: ROTATION ON BOTTOMMud Weight (g/cm3): 1.40DWOB (1000 kgf): 10.0DTOR (kN.m): 1.44Block Weight (1000 kgf): 28.0Bit Measured Depth (m): 1171.0

BHA DESCRIPTION

Component Name Steel Grade Length Cum Length ID OD Max OD Bend AngleSub Comp To Bottom

Sensor To Bit Lin Weight Non-Mag

m m in in in deg m m kg/m

12 1/4 " Bit .44 .44 3 1/4 8 12 1/4 212.56 NoA800M4553XP 8.92 9.36 6 1/4 8 1/4 8 1/4 238.95 NoA800M4553XP - Stabilizer #1 .41 12 1/8 .618" NM Float Sub .80 10.16 2 13/16 8 8 222.87 Yes12" NM Stabilizer 1.67 11.83 2 13/16 8 11 3/4 222.03 NoGyroMWD 9.43 21.26 3 3/4 8 8 263.79 Yes8" Pulser Sub 1.92 23.18 3 3/4 8 8 198.42 Yes8" NM Collar 9.55 32.73 2 13/16 8 8 222.87 Yes3 x 8" Drill Collars 27.00 59.73 3 8 8 217.72 NoCrossover 1.00 60.73 2 13/16 8 8 222.03 No4 x 5" HWDP D-55 36.00 96.73 3 5 6 1/2 74.97 NoHydraulic Jar 9.50 106.23 2 3/4 6 1/2 6 1/2 88.35 No4 x 5" HWDP D-55 36.00 142.23 3 5 6 1/2 74.97 NoCrossover 1.00 143.23 3 7 1/2 7 1/2 187.06 No5-1/2 " 21.90 DPS, Premium S-135 1027.77 1171.00 4.778 5.356 7 1/2 39.18 No

WELLBORE DESCRIPTIONSection Name Length Cum Length Diameter

m m in13 3/8" Casing 501.00 501.00 12.2587Open Hole 670.00 1171.00 12 1/4

FRICTION FACTORSLength Cum Length Friction Factors

m m Rotation Translation501.00 501.00 .25 .00670.00 1171.00 .30 .00

SUMMARY OUTPUTHook Load (1000 kgf): 62.42

Applied Torque at RKB (kN.m): 6.71

Neutral Point Location

- From the Bit (m): 94.22 - From the Surface (m): 1076.78

Component Name Buckling Stretch Max Torque% of Torsion

YieldMax Bending

StressVon Mises

Stress% of Tensile

YieldMax Side

Force

m kN.m bar bar1000 kgf/10

m12 1/4 " Bit NO .00 1.44 579.63 615.85 12.92A800M4553XP NO .00 1.52 300.06 363.58 .68A800M4553XP - Stabilizer #1 NO .00 1.47 168.15 235.03 5.588" NM Float Sub NO .00 1.54 37.78 69.25 .0012" NM Stabilizer NO .00 1.98 64.73 93.74 11.57GyroMWD NO .00 2.26 81.91 113.49 1.508" Pulser Sub NO .00 2.35 45.83 76.23 1.588" NM Collar NO .00 2.73 56.70 81.50 1.583 x 8" Drill Collars NO .00 3.76 119.80 139.76 2.05Crossover NO .00 3.82 15.15 45.87 3.814 x 5" HWDP NO -.01 4.15 5.41 249.92 327.81 8.64 .49Hydraulic Jar NO .00 4.23 367.99 378.47 .414 x 5" HWDP NO .00 4.58 5.97 199.69 319.51 8.43 .44Crossover NO .00 4.61 499.67 512.76 2.135-1/2 " 21.90 DPS, Premium NO .31 6.71 6.89 351.14 1620.94 17.41 .76

Multipoint Torque and Drag Outputs

Client: PetromField: Delta - Lebada WestRig: PFS-6 - LebadaWell: LVO4Bore Hole: LVO4Engineer: FUstunDate: September 19, 2008


DRILLING PARAMETERSOperation Mode: TRIPPING LOADS ANALYSISMud Weight (g/cm3): 1.40DWOB (1000 kgf): 0.0DTOR (kN.m): 0.0Block Weight (1000 kgf): 28.0Start Bit Depth (m): 0.0End Bit Depth (m): 1171.0

Bit Depth Increment (m): 100.0

BHA DESCRIPTION



m m in in in deg m m kg/m12 1/4 " Bit .44 .44 3 1/4 8 12 1/4 212.56 NoA800M4553XP 8.92 9.36 6 1/4 8 1/4 8 1/4 238.95 NoA800M4553XP - Stabilizer #1 .41 12 1/8 .618" NM Float Sub .80 10.16 2 13/16 8 8 222.87 Yes12" NM Stabilizer 1.67 11.83 2 13/16 8 11 3/4 222.03 NoGyroMWD 9.43 21.26 3 3/4 8 8 263.79 Yes8" Pulser Sub 1.92 23.18 3 3/4 8 8 198.42 Yes8" NM Collar 9.55 32.73 2 13/16 8 8 222.87 Yes3 x 8" Drill Collars 27.00 59.73 3 8 8 217.72 NoCrossover 1.00 60.73 2 13/16 8 8 222.03 No4 x 5" HWDP D-55 36.00 96.73 3 5 6 1/2 74.97 NoHydraulic Jar 9.50 106.23 2 3/4 6 1/2 6 1/2 88.35 No4 x 5" HWDP D-55 36.00 142.23 3 5 6 1/2 74.97 NoCrossover 1.00 143.23 3 7 1/2 7 1/2 187.06 No

5-1/2 " 21.90 DPS, Premium S-135 1027.77 1171.00 4.778 5.356 7 1/2 39.18 No


m m in13 3/8" Casing 501.00 501.00 12.2587

Open Hole 670.00 1171.00 12 1/4


m m #1 #2 Trip in #3 Trip in #4 Trip in #5 Trip in501.00 501.00 .00 .20 .20 .20 .20

670.00 1171.00 .00 .20 .30 .40 .50

MULTIPOINT TAD OUTPUT

Bit DepthCSG 0.00 OPH 0.00

CSG 0.20 OPH 0.20 Trip in




Surface Torque Hook Load





m kN.m 1000 kgf kN.m 1000 kgf kN.m 1000 kgf kN.m 1000 kgf kN.m 1000 kgf0.0 0.0 28.0 0.0 28.0 0.0 28.0 0.0 28.0 0.0 28.0

100.0 0.0 42.13 0.0 42.12 0.0 42.12 0.0 42.12 0.0 42.12

200.0 0.0 46.73 0.0 46.69 0.0 46.69 0.0 46.69 0.0 46.69300.0 0.0 49.94 0.0 49.8 0.0 49.8 0.0 49.8 0.0 49.8400.0 0.0 53.15 0.0 52.87 0.0 52.87 0.0 52.87 0.0 52.87500.0 0.0 56.33 0.0 55.9 0.0 55.9 0.0 55.9 0.0 55.9600.0 0.0 59.45 0.0 58.79 0.0 58.63 0.0 58.47 0.0 58.31700.0 0.0 62.49 0.0 61.34 0.0 60.98 0.0 60.64 0.0 60.3800.0 0.0 65.32 0.0 63.54 0.0 62.92 0.0 62.32 0.0 61.73900.0 0.0 67.76 0.0 65.33 0.0 64.44 0.0 63.58 0.0 62.76

1000.0 0.0 69.82 0.0 66.66 0.0 65.47 0.0 64.34 0.0 63.261100.0 0.0 71.36 0.0 67.57 0.0 66.1 0.0 64.71 0.0 63.391171.0 0.0 72.45 0.0 68.3 0.0 66.71 0.0 65.2 0.0 63.75






BHA DESCRIPTION



m m in in in deg m m kg/m12 1/4 " Bit .44 .44 3 1/4 8 12 1/4 212.56 NoA800M4553XP 8.92 9.36 6 1/4 8 1/4 8 1/4 238.95 NoA800M4553XP - Stabilizer #1 .41 12 1/8 .618" NM Float Sub .80 10.16 2 13/16 8 8 222.87 Yes12" NM Stabilizer 1.67 11.83 2 13/16 8 11 3/4 222.03 NoGyroMWD 9.43 21.26 3 3/4 8 8 263.79 Yes8" Pulser Sub 1.92 23.18 3 3/4 8 8 198.42 Yes8" NM Collar 9.55 32.73 2 13/16 8 8 222.87 Yes3 x 8" Drill Collars 27.00 59.73 3 8 8 217.72 NoCrossover 1.00 60.73 2 13/16 8 8 222.03 No4 x 5" HWDP D-55 36.00 96.73 3 5 6 1/2 74.97 NoHydraulic Jar 9.50 106.23 2 3/4 6 1/2 6 1/2 88.35 No4 x 5" HWDP D-55 36.00 142.23 3 5 6 1/2 74.97 NoCrossover 1.00 143.23 3 7 1/2 7 1/2 187.06 No

5-1/2 " 21.90 DPS, Premium S-135 1027.77 1171.00 4.778 5.356 7 1/2 39.18 No


m m in13 3/8" Casing 501.00 501.00 12.2587

Open Hole 670.00 1171.00 12 1/4


m m #1 #2 Trip out #3 Trip out #4 Trip out #5 Trip out501.00 501.00 .00 .20 .20 .20 .20

670.00 1171.00 .00 .20 .30 .40 .50



CSG 0.20 OPH 0.20 Trip out










100.0 0.0 42.13 0.0 42.14 0.0 42.14 0.0 42.14 0.0 42.14

200.0 0.0 46.73 0.0 46.76 0.0 46.76 0.0 46.76 0.0 46.76300.0 0.0 49.94 0.0 50.09 0.0 50.09 0.0 50.09 0.0 50.09400.0 0.0 53.15 0.0 53.43 0.0 53.43 0.0 53.43 0.0 53.43500.0 0.0 56.33 0.0 56.77 0.0 56.77 0.0 56.77 0.0 56.77600.0 0.0 59.45 0.0 60.13 0.0 60.28 0.0 60.44 0.0 60.6700.0 0.0 62.49 0.0 63.7 0.0 64.11 0.0 64.53 0.0 64.95800.0 0.0 65.32 0.0 67.25 0.0 68.01 0.0 68.79 0.0 69.59900.0 0.0 67.76 0.0 70.45 0.0 71.6 0.0 72.8 0.0 74.05

1000.0 0.0 69.82 0.0 73.4 0.0 75.02 0.0 76.72 0.0 78.521100.0 0.0 71.36 0.0 75.74 0.0 77.82 0.0 80.04 0.0 82.411171.0 0.0 72.45 0.0 77.37 0.0 79.75 0.0 82.33 0.0 85.14

0

200

400

600

800

1000

Mea

sure

d D

epth

(m)

30.0 35.0 40.0 45.0 50.0 55.0 60.0 65.0 70.0

Hook Load (1000 kgf)

TRIPPING LOADS ANALYSIS(with tortuosity)

Mudweight = 1.40Well: LVO4

Client: PetromDate: September 19, 2008

Hook Load CSG_FF= 0.00 OPH_FF= 0.00 Hook Load CSG_FF= 0.20 OPH_FF= 0.20 Trip inHook Load CSG_FF= 0.20 OPH_FF= 0.30 Trip inHook Load CSG_FF= 0.20 OPH_FF= 0.40 Trip inHook Load CSG_FF= 0.20 OPH_FF= 0.50 Trip in

0

200

400

600

800

1000

Mea

sure

d D

epth

(m)

30.0 40.0 50.0 60.0 70.0 80.0





Hook Load CSG_FF= 0.00 OPH_FF= 0.00 Hook Load CSG_FF= 0.20 OPH_FF= 0.20 Trip outHook Load CSG_FF= 0.20 OPH_FF= 0.30 Trip outHook Load CSG_FF= 0.20 OPH_FF= 0.40 Trip outHook Load CSG_FF= 0.20 OPH_FF= 0.50 Trip out

Drilling Program v1

PHASE 8 1/2 x 9 1/8""

8 1/2" x 9 1/8" section will be drilled from 9 5/8" casing shoe to the 7" casing point of 2363 meters. The aim of the section is to drill tangent until KOP of 1850 MD and build and turn with 2.7 DLS to 73.45 degrees. A PowerDrive +ARC+TeleScope assembly will be used for the section. Hole will be opened using underreamer while drilling.

The calculated flow rate for the section is 2082 lpm (550 gpm). At this rate good hole cleaning will be achieved. 4x12 + 1x13 nozzles are used to achieve the required 600 to 800 psi for PowerDrive tool. In case the flow rate and/or mud properties change, nozzles might need to be changed for proper working of the PowerDrive tool.

For the simulation, 5 tonnes WOB used and neutral point about 30 meters above the jar which is in compression. Neutral point will be in the vicinity of the jar between 3 to 5 tonnes. Flow limits of the tools are: PowerDrive 675 RSS : 400 - 800 gpm ARC Vision : max. 800 gpm TeleScope : 275 - 800 gpm

Cum. Len. (m)

5-1/2 " 21.90 DPS, Premium 204.84 PetromWell: LVO4

4 x 5" HWDP (4 joints) 194.84 Rig: JupiterField: Delta - Lebada West

Borehole: LVO4

BHA: BHA #03_8 1/2" x 9 1/8" BHA_PDrive+ARC Item1

Hydraulic Jar 158.84 BHA DESCRIPTION2

ELEMENT LENGTH (m) OD (in) ID (in) MAX OD (in)8 1/2 " PDC Bit 0.23 8.50 2.25 8.50 3PD 675 X5 4.13 6.73 2.28 8.25

10 x 5 1/2" HWDP (10 joints) 149.35 Receiver w/ Float Valve 1.74 6.75 2.81 8.00 4InLineFlexJoint 2.91 6.75 2.81 6.75ARC-6 5.49 6.75 2.81 7.50 5Telescope 675 NF 8.87 6.75 5.11 6.89

6 3/4" Collar 59.35 6 3/4" NM Collar 9.40 6.75 2.81 6.75 68 1/2" x 9 1/8" Reamer 4.55 6.75 1.50 6.756 3/4" Collar 10.00 6.75 2.81 6.75 78 1/8" Stabilizer 2.03 6.75 2.81 8.13

8 1/8" Stabilizer 49.35 6 3/4" Collar 10.00 6.75 2.81 6.75 810 x 5 1/2" HWDP (10 joint 90.00 5.00 3.00 6.50Hydraulic Jar 9.50 6.50 2.75 6.50 9

6 3/4" Collar 47.32 4 x 5" HWDP (4 joints) 36.00 5.00 3.00 6.505-1/2 " 21.90 DPS, Premium 10.00 5.36 4.78 7.50 10

8 1/2" x 9 1/8" Reamer 37.32 11

Bit to Gamma Ray Sensor = 18.1601 m 12Bit to Resistivity Sensor = 11.1954 m

6 3/4" NM Collar 32.77 Bit to Direction & Inclination Sensor = 18.1601 m 13

DRILLING OVERVIEW 14

15Telescope 675 NF 23.37

ARC-6 14.50

InLineFlexJoint 9.01 Depth in: 1978 m Depth out: 2306 mInclination in: 52.6° To: 87.0°

Receiver w/ Float Valve 6.10 Direction in: 37° To: 33°Total Drilled 328 m Dogleg: 3.35

PD 675 X5 4.36 FlowRate [gpm]: EDI Az err: 0.28°EDI Δ |B|: 228 nT EDI Δ Dip: 0.10°

8 1/2 " PDC Bit 0.23Quality ControlCreated by: fustun Date: 19-Sep-08Checked by: Date:

Drilling Program v1

BHA Data SheetBHA # BHA #03_8 1/2" x 9 1/8" BHA_PDrive+ARC+Tele Date September 19, 2008


Drilling Program v1

NameVendor/Model Serial #

Fish. NeckOD (in)/


Max OD(in)


Length(m)

Cum.Length

(m)8 1/2 " PDC Bit ReedHycalog 218760 6.75 8.50 0.23 0.23

RSX616M 2.25 4.50 Reg PinPD 675 X5 Schlumberger 935 6.73 8.25 4.50 Reg Box 4.13 4.36

PD 675 AA 8 1/2" 2.28 4.50 NC50 (4 1/2 IF) BoxReceiver w/ Float Valve Schlumberger AA-48535 6.75 8.00 4.50 NC50 (4 1/2 IF) Pin 1.74 6.10

2.81 5.50 FH PinInLineFlexJoint Schlumberger 60054 6.75 6.75 5.50 FH Box 2.91 9.01

2.81 5.50 FH PinARC-6 Schlumberger 6.75 7.50 5.50 FH Box 5.49 14.50

ARC-6 2.81 5.50 FH BoxTelescope 675 NF Schlumberger 6.75 6.89 5.50 FH Pin 8.87 23.37

Telescope 675 NF 5.11 4.50 NC50 (4 1/2 IF) Box6 3/4" NM Collar Schlumberger 6.75 6.75 4.50 NC50 (4 1/2 IF) Pin 9.40 32.77

2.81 4.50 NC50 (4 1/2 IF) Box8 1/2" x 9 1/8" Reamer AnderReamer RB 8208 6.75 6.75 4.50 NC50 (4 1/2 IF) Pin 4.55 37.32

1.50 4.50 NC50 (4 1/2 IF) Box6 3/4" Collar 6.75 6.75 4.50 NC50 (4 1/2 IF) Pin 10.00 47.32

2.81 4.50 NC50 (4 1/2 IF) Box8 1/8" Stabilizer Schlumberger MWS-2909 6.75 8.13 4.50 NC50 (4 1/2 IF) Pin 2.03 49.35

2.81 4.50 NC50 (4 1/2 IF) Box6 3/4" Collar 6.75 6.75 4.50 NC50 (4 1/2 IF) Pin 10.00 59.35

2.81 4.50 NC50 (4 1/2 IF) Box10 x 5 1/2" HWDP (10 joints) 5.00 6.50 4.50 NC50 (4 1/2 IF) Pin 90.00 149.35

3.00 4.50 NC50 (4 1/2 IF) BoxHydraulic Jar HE 6 1/2 6.50 4.50 NC50 (4 1/2 IF) Pin 9.50 158.84

Hydra-Jar 2 3/4 4.50 NC50 (4 1/2 IF) Box4 x 5" HWDP (4 joints) 5 6.50 4.50 NC50 (4 1/2 IF) Pin 36.00 194.84

3 4.50 NC50 (4 1/2 IF) Box5-1/2 " 21.90 DPS, Prem. 5 21/59 7.50 5.50 FH Pin 10.00 204.845.5,21.9,Premium 4 7/9 5.50 FH Box


BHA Comments:


0.60 5.11 Resistivity 11.12 4 12.000.60 48.07 Gamma Ray 11.20 1 13.00

D&I 18.16


Quality Control

Created By: fustun

Checked By:





District: Fann 6: 0.0 lbf/100ft2 Chokeline: barBHA Data: BHA #03_8 1/2" x 9 1/8" BHA_PDrive+A Fann 100: 0.0 lbf/100ft2 Hyd Imbalance: 0 bar





m in in m bar m in m8 1/2 " PDC Bit + noz 0.23 2.25 6.75 0.23 47.3 9 5/8" Casing 1171.00 8.68 1171.00PD 675 X5 4.13 2.28 6.73 4.36 0.0 Open Hole 1192.00 9.13 2363.00Receiver w/ Float Val 1.74 2.81 6.75 6.10 0.2InLineFlexJoint 2.91 2.81 6.75 9.01 0.3ARC-6 5.49 2.81 6.75 14.50 1.5Telescope 675 NF 8.87 5.11 6.75 23.37 11.16 3/4" NM Collar 9.40 2.81 6.75 32.77 1.18 1/2" x 9 1/8" Reame 4.55 1.50 6.75 37.32 13.66 3/4" Collar 10.00 2.81 6.75 47.32 1.88 1/8" Stabilizer 2.03 2.81 6.75 49.35 0.46 3/4" Collar 10.00 2.81 6.75 59.35 1.810 x 5 1/2" HWDP 90.00 3.00 5.00 149.35 12.1Hydraulic Jar 9.50 2.75 6.50 158.84 1.94 x 5" HWDP 36.00 3.00 5.00 194.84 4.85-1/2 " 21.90 DPS, Pr 2168.16 4.78 5.36 2363.00 62.8

Bit Details Reamer Surface Equipment : 3Type: PDC Type: Length ID

Bit Diameter: 8.500 in Diameter: 6.750 in m inTFA: 368.6 mm2 TFA: 95.0 mm2 Standpipe: 14 4.00

Nozzles (1/32in) 4x12, 1x13 Nozzles (1/32in) 3x8 Rotary Hose: 17 3.00Swivel: 2 2.50Kelly: 12 3.25Effective: 146 3.83

Motor DetailsMotor: Hydraulic Thrust: 1000 kgf Maximum WOB: 1000 kgf

Bearing Flow: % Bearing Capacity: 1000 kgf Maximum Overpull: 1000 kgfWear: %

Rotor Nozzle: in/32 On-Bottom RPM: rpm On-Bottom Pressure Drop: barMin Flowrate: L/min WOB: 1000 kgf Off-Bottom Pressure Drop: barMax Flowrate: L/min DTOR: N.m

Bearing Flowrate: L/min Delta P: bar Stall Nozzle Flowrate: L/minNozzle Flowrate: L/min Stall Motor Flowrate: L/minMotor Flowrate: L/min Mechanical HP: kW Stall WOB: 1000 kgf

Optimum HP: kW Stall DTOR: N.mRSS Flowrate: 425.22 L/min Efficiency: % Stall Pressure Drop: barRSS Actuator Flow: 2.74 %

Cuttings Hole Cleaning Flow above critical rateCuttings Diameter: 0.50 in RPM: 120 Drilling Program v1




BHA Data: BHA #03_8 1/2" x 9 1/8" BHA_PDrive+ARC+Tele 19Sep08Wellbore Data: WBG


Pump Flowrate: 1700 1777 1854 1931 2008 2085 2162 2239 2316 2393 2470 L/minReamer flowrate: 386 404 421 438 456 473 490 508 525 542 560 L/minMotor Pwr Section Flow: L/minMotor Bearing Flow: L/minBit Flowrate: 1278 1334 1392 1450 1509 1567 1626 1684 1743 1801 1860 L/min







Bit Optimization TFA : 368.6 mm2 Nozzles: 4x12, 1x13 /32 inBit Flowrate: 1278 1334 1392 1450 1509 1567 1626 1684 1743 1801 1860 L/minJet Velocity: 58 60 63 66 68 71 74 76 79 81 84 m/s



Reamer TFA : 95.008 mm2 Nozzles: 3x8 /32 inReamer Nozzle Flowrate: 386 404 421 438 456 473 490 508 525 542 560 L/min

Percent of flow: 23 23 23 23 23 23 23 23 23 23 23 %Pressure loss: 43 47 51 56 60 65 70 75 80 85 91 bar

Jet Velocity: 68 71 74 77 80 83 86 89 92 95 98 m/sHydraulic Power: 28.9 29.6 30.1 30.7 31.2 31.7 32.2 32.7 33.1 33.3 33.5 %



BHA & WELLBORE DATABHA Data: BHA #03_8 1/2" x 9 1/8" BHA_PDrive+ARC+Tele 19Sep08Survey Data: LV04 Rev3.0 fu 17Sep08 (with tortuosity)Wellbore Data: WBG


BHA DESCRIPTION




8 1/2 " PDC Bit .23 .23 2 1/4 6 3/4 8 1/2 161.09 NoPD 675 X5-RSS Bias Unit .75 .98 4.200 6 3/4 6 3/4 148.82 NoPD 675 X5-RSS Extension Sub .25 1.23 2.283 6.730 6.730 148.82 NoRSS Extension Sub's PAD .02 8.100 .03PD 675 X5-RSS Control Unit 3.13 4.36 2 1/2 6 3/4 6 3/4 148.82 NoReceiver w/ Float Valve 1.74 6.10 2 13/16 6 3/4 8 149.11 YesInLineFlexJoint 2.91 9.01 2 13/16 6 3/4 6 3/4 149.11 YesARC-6 5.49 14.50 2.810 6 3/4 6 3/4 11.12 148.82 YesTelescope 675 NF 8.87 23.37 5.109 6 3/4 6 3/4 18.16 125.66 Yes6 3/4" NM Collar 9.40 32.77 2 13/16 6 3/4 6 3/4 149.11 Yes8 1/2" x 9 1/8" Reamer 4.55 37.32 1 1/2 6 3/4 6 3/4 175.63 No6 3/4" Collar 10.00 47.32 2 13/16 6 3/4 6 3/4 149.11 No8 1/8" Stabilizer 2.03 49.35 2 13/16 6 3/4 8 1/8 149.11 No6 3/4" Collar 10.00 59.35 2 13/16 6 3/4 6 3/4 149.11 No10 x 5 1/2" HWDP D-55 90.00 149.35 3 5 6 1/2 74.97 NoHydraulic Jar 9.50 158.84 2 3/4 6 1/2 6 1/2 88.35 No4 x 5" HWDP D-55 36.00 194.84 3 5 6 1/2 74.97 No5-1/2 " 21.90 DPS, Premium S-135 2168.16 2363.00 4.778 5.356 7 1/2 39.18 No


m m in9 5/8" Casing 1171.00 1171.00 8.5247Open Hole 1192.00 2363.00 9 1/8


m m Rotation Translation

1171.00 1171.00 .25 .001192.00 2363.00 .30 .00






YieldMax Bending

StressVon Mises

Stress% of Tensile

YieldMax Side

Force

m kN.m bar bar 1000 kgf/10 m8 1/2 " PDC Bit NO .00 1.44 .00 23.89 32.55PD 675 X5-RSS Bias Unit NO .00 1.44 145.66 182.68 .00PD 675 X5-RSS Extension Sub NO .00 1.44 166.00 191.71 .00RSS Extension Sub's PAD NO .00 1.44 161.71 187.46 .00PD 675 X5-RSS Control Unit NO .00 1.44 192.82 218.60 .00Receiver w/ Float Valve NO .00 1.53 164.96 191.68 5.33InLineFlexJoint NO .00 1.60 145.12 172.06 1.19ARC-6 NO .00 1.73 123.36 150.43 1.24Telescope 675 NF NO .00 2.00 124.64 175.39 1.246 3/4" NM Collar NO .00 2.24 217.54 241.60 1.218 1/2" x 9 1/8" Reamer NO .00 2.40 226.37 247.04 1.316 3/4" Collar NO .00 2.66 232.25 255.29 1.258 1/8" Stabilizer NO .00 2.84 197.18 219.88 4.916 3/4" Collar NO .00 3.04 305.04 325.38 1.1110 x 5 1/2" HWDP NO -.01 4.28 5.58 290.82 360.18 9.50 1.03Hydraulic Jar NO .00 4.40 244.36 265.19 .564 x 5" HWDP NO .00 4.88 6.36 277.40 362.61 9.56 .615-1/2 " 21.90 DPS, Premium NO .88 16.62 17.06 277.16 2510.29 26.97 .54






BHA DESCRIPTION



m m in in in deg m m kg/m8 1/2 " PDC Bit .23 .23 2 1/4 6 3/4 8 1/2 161.09 NoPD 675 X5-RSS Bias Unit .75 .98 4.200 6 3/4 6 3/4 148.82 NoPD 675 X5-RSS Extension Sub .25 1.23 2.283 6.730 6.730 148.82 NoRSS Extension Sub's PAD .02 8.100 .03PD 675 X5-RSS Control Unit 3.13 4.36 2 1/2 6 3/4 6 3/4 148.82 NoReceiver w/ Float Valve 1.74 6.10 2 13/16 6 3/4 8 149.11 YesInLineFlexJoint 2.91 9.01 2 13/16 6 3/4 6 3/4 149.11 YesARC-6 5.49 14.50 2.810 6 3/4 6 3/4 11.12 148.82 YesTelescope 675 NF 8.87 23.37 5.109 6 3/4 6 3/4 18.16 125.66 Yes6 3/4" NM Collar 9.40 32.77 2 13/16 6 3/4 6 3/4 149.11 Yes8 1/2" x 9 1/8" Reamer 4.55 37.32 1 1/2 6 3/4 6 3/4 175.63 No6 3/4" Collar 10.00 47.32 2 13/16 6 3/4 6 3/4 149.11 No8 1/8" Stabilizer 2.03 49.35 2 13/16 6 3/4 8 1/8 149.11 No6 3/4" Collar 10.00 59.35 2 13/16 6 3/4 6 3/4 149.11 No10 x 5 1/2" HWDP D-55 90.00 149.35 3 5 6 1/2 74.97 NoHydraulic Jar 9.50 158.84 2 3/4 6 1/2 6 1/2 88.35 No4 x 5" HWDP D-55 36.00 194.84 3 5 6 1/2 74.97 No

5-1/2 " 21.90 DPS, Premium S-135 2168.16 2363.00 4.778 5.356 7 1/2 39.18 No


m m in9 5/8" Casing 1171.00 1171.00 8.5247

Open Hole 1192.00 2363.00 9 1/8



1192.00 2363.00 .00 .20 .30 .40 .50













200.0 0.0 43.08 0.0 43.03 0.0 43.03 0.0 43.03 0.0 43.03

400.0 0.0 49.2 0.0 48.97 0.0 48.97 0.0 48.97 0.0 48.97600.0 0.0 55.25 0.0 54.75 0.0 54.75 0.0 54.75 0.0 54.75800.0 0.0 60.97 0.0 59.62 0.0 59.62 0.0 59.62 0.0 59.62

1000.0 0.0 65.63 0.0 63.1 0.0 63.1 0.0 63.1 0.0 63.11200.0 0.0 69.08 0.0 65.41 0.0 65.23 0.0 65.06 0.0 64.881400.0 0.0 73.31 0.0 68.39 0.0 67.45 0.0 66.49 0.0 65.531600.0 0.0 77.73 0.0 71.48 0.0 70.19 0.0 68.89 0.0 67.571800.0 0.0 82.18 0.0 74.53 0.0 72.89 0.0 71.24 0.0 69.572000.0 0.0 85.89 0.0 76.88 0.0 74.86 0.0 72.81 0.0 70.732200.0 0.0 87.72 0.0 77.49 0.0 74.96 0.0 72.36 0.0 69.652363.0 0.0 87.98 0.0 76.87 0.0 73.83 0.0 70.62 0.0 67.15






BHA DESCRIPTION



m m in in in deg m m kg/m8 1/2 " PDC Bit .23 .23 2 1/4 6 3/4 8 1/2 161.09 NoPD 675 X5-RSS Bias Unit .75 .98 4.200 6 3/4 6 3/4 148.82 NoPD 675 X5-RSS Extension Sub .25 1.23 2.283 6.730 6.730 148.82 NoRSS Extension Sub's PAD .02 8.100 .03PD 675 X5-RSS Control Unit 3.13 4.36 2 1/2 6 3/4 6 3/4 148.82 NoReceiver w/ Float Valve 1.74 6.10 2 13/16 6 3/4 8 149.11 YesInLineFlexJoint 2.91 9.01 2 13/16 6 3/4 6 3/4 149.11 YesARC-6 5.49 14.50 2.810 6 3/4 6 3/4 11.12 148.82 YesTelescope 675 NF 8.87 23.37 5.109 6 3/4 6 3/4 18.16 125.66 Yes6 3/4" NM Collar 9.40 32.77 2 13/16 6 3/4 6 3/4 149.11 Yes8 1/2" x 9 1/8" Reamer 4.55 37.32 1 1/2 6 3/4 6 3/4 175.63 No6 3/4" Collar 10.00 47.32 2 13/16 6 3/4 6 3/4 149.11 No8 1/8" Stabilizer 2.03 49.35 2 13/16 6 3/4 8 1/8 149.11 No6 3/4" Collar 10.00 59.35 2 13/16 6 3/4 6 3/4 149.11 No10 x 5 1/2" HWDP D-55 90.00 149.35 3 5 6 1/2 74.97 NoHydraulic Jar 9.50 158.84 2 3/4 6 1/2 6 1/2 88.35 No4 x 5" HWDP D-55 36.00 194.84 3 5 6 1/2 74.97 No

5-1/2 " 21.90 DPS, Premium S-135 2168.16 2363.00 4.778 5.356 7 1/2 39.18 No


m m in9 5/8" Casing 1171.00 1171.00 8.5247

Open Hole 1192.00 2363.00 9 1/8



1192.00 2363.00 .00 .20 .30 .40 .50













200.0 0.0 43.08 0.0 43.13 0.0 43.13 0.0 43.13 0.0 43.13

400.0 0.0 49.2 0.0 49.44 0.0 49.44 0.0 49.44 0.0 49.44600.0 0.0 55.25 0.0 55.76 0.0 55.76 0.0 55.76 0.0 55.76800.0 0.0 60.97 0.0 62.43 0.0 62.43 0.0 62.43 0.0 62.43

1000.0 0.0 65.63 0.0 68.45 0.0 68.45 0.0 68.45 0.0 68.451200.0 0.0 69.08 0.0 73.39 0.0 73.61 0.0 73.83 0.0 74.041400.0 0.0 73.31 0.0 79.31 0.0 80.57 0.0 81.83 0.0 83.091600.0 0.0 77.73 0.0 85.55 0.0 87.32 0.0 89.1 0.0 90.881800.0 0.0 82.18 0.0 91.91 0.0 94.22 0.0 96.53 0.0 98.842000.0 0.0 85.89 0.0 97.38 0.0 100.19 0.0 103.0 0.0 105.82200.0 0.0 87.72 0.0 100.84 0.0 104.29 0.0 107.74 0.0 111.222363.0 0.0 87.98 0.0 102.18 0.0 106.15 0.0 110.15 0.0 114.22

0

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30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0 110.0






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30.0 35.0 40.0 45.0 50.0 55.0 60.0 65.0 70.0 75.0 80.0 85.0






Drilling Program v1

PHASE 6"

6" section will be drilled from 7" casing point to TD. PowerDrive+ImPulse assembly will be used to drill to the target. It is possible to have minimal directiol work if the markers are shallower or deeper than expected.

BHA consists of PowerDrive 475 RSS and ImPulse MWD tool. The calculated flow rate for the section is 1000 lpm (270 gpm) which is below the critical rate due to surface pressure limitation limits flow available. It should be noted that the bit pressure drop should be between 600 and 800 psi. To reach this requirement, 3x12 nozzles used on the bit. In case flow rates and/or mud weights change, nozzle sizes should be recalculated. Flow limits of the tools are: PowerDrive 475 RSS : 220 - 310 gpm ImPulse : 200 - 400 gpm

Cum. Len. (m)

5-1/2 " 21.90 DPS, Premium (10 2948.40 PetromCrossover 1948.40 Well: LVO4

Rig: Jupiter3-1/2 " 15.50 DPG, Class 2 (72 j 1947.40 Field: Delta - Lebada West

Borehole: LVO4

BHA: BHA #04_6" BHA_PDrive+ImPulse 19Sep0

BHA DESCRIPTION6 x 4 3/4" Collar (6 joints) 1224.40

ELEMENT LENGTH (m) OD (in) ID (in) MAX OD (in)6" Bit 0.16 6.00 1.25 6.00PD 475 AA 6" 4.05 4.75 2.25 5.88Reciever Sub 1.90 4.75 2.50 4.75In Line Flex+Sub 0.73 4.75 2.50 4.75

8 x 3 1/2" HWDP (8 joints) 1169.38 IMPulse 20k Medium Flow 11.02 4.75 3.19 5.254 3/4" Flex NM Collar 9.02 4.75 2.50 4.753-1/2 " 15.50 DPG, Class 2 1000.00 3.23 2.60 5.007 x 3 1/2" HWDP (7 joints) 63.97 3.50 2.16 4.75Hydraulic Jar 5.40 5.00 2.25 5.008 x 3 1/2" HWDP (8 joints) 73.13 3.50 2.16 4.75

Hydraulic Jar 1096.25 6 x 4 3/4" Collar (6 joints) 55.02 4.75 2.00 4.753-1/2 " 15.50 DPG, Class 2 723.00 3.23 2.60 5.00Crossover 1.00 7.50 3.00 7.505-1/2 " 21.90 DPS, Premium 1000.00 5.36 4.78 7.50

7 x 3 1/2" HWDP (7 joints) 1090.85

Bit to Direction & Inclination Sensor = 10.4 m3-1/2 " 15.50 DPG, Class 2 (104 1026.88

DRILLING OVERVIEW

4 3/4" Flex NM Collar 26.88

IMPulse 20k Medium Flow 17.86

In Line Flex+Sub 6.84 Depth in: Depth out:Inclination in: 0.0° To: 0.0°Direction in: 0° To: 0°

Reciever Sub 6.11 Total Drilled Dogleg: 0FlowRate [gpm]: EDI Az err: 0.28°

EDI Δ |B|: 47 nT EDI Δ Dip: 0.09°PD 475 AA 6" 4.21

Quality Control6" Bit 0.16 Created by: fustun Date: 19-Sep-08

Checked by: Date:

Drilling Program v1

BHA Data SheetBHA # BHA #04_6" BHA_PDrive+ImPulse 19Sep08 Date September 19, 2008


Drilling Program v1

Item NameVendor/Model Serial #

Fish. NeckOD (in)/


Max OD(in)


Length(m)

Cum.Length

(m)1 6" Bit Reed Hycalog 218763 4.50 6.00 0.16 0.16

RSX613M-C1 1.25 3.50 Reg Pin2 PD 475 AA 6" Schlumberger 49241 4.75 5.88 3.50 Reg Box 4.05 4.21

PD 475 AA 6" 2.25 3.50 NC38 (3 1/2 IF) Box3 Reciever Sub Schlumberger 53597 4.75 4.75 3.50 NC38 (3 1/2 IF) Pin 1.90 6.11

2.50 3.50 NC38 (3 1/2 IF) Box4 In Line Flex+Sub Schlumberger 54296 4.75 4.75 3.50 NC38 (3 1/2 IF) Pin 0.73 6.84

2.50 3.50 NC38 (3 1/2 IF) Box5 IMPulse 20k Medium Flow Schlumberger 519 4.75 5.25 3.50 NC38 (3 1/2 IF) Pin 11.02 17.86

IMPulse 20k Medium Flow 3.19 3.50 NC38 (3 1/2 IF) Box6 4 3/4" Flex NM Collar Schlumberger 977011 4.75 4.75 3.50 NC38 (3 1/2 IF) Pin 9.02 26.88

2.50 3.50 NC38 (3 1/2 IF) Box7 3-1/2 " 15.50 DPG, Class 2 (104GSP 3.23 5.00 3.50 NC38 (3 1/2 IF) Pin 1000.00 1026.88

3.5,15.5,Class 2 2.60 3.50 NC38 (3 1/2 IF) Box8 7 x 3 1/2" HWDP (7 joints) GSP 3.50 4.75 3.50 NC38 (3 1/2 IF) Pin 63.97 1090.85

2.16 3.50 NC38 (3 1/2 IF) Box9 Hydraulic Jar GSP DG 6-500-167V 5.00 5.00 3.50 NC38 (3 1/2 IF) Pin 5.40 1096.25

Hydra-Jar 2.25 3.50 NC38 (3 1/2 IF) Box10 8 x 3 1/2" HWDP (8 joints) GSP 3.50 4.75 3.50 NC38 (3 1/2 IF) Pin 73.13 1169.38

2.16 3.50 NC38 (3 1/2 IF) Box11 6 x 4 3/4" Collar (6 joints) GSP 4.75 4.75 3.50 NC38 (3 1/2 IF) Pin 55.02 1224.40

2.00 3.50 NC38 (3 1/2 IF) Box12 3-1/2 " 15.50 DPG, Class 2 (72 3.23 5.00 3.50 NC38 (3 1/2 IF) Pin 723.00 1947.40

3.5,15.5,Class 2 2.60 3.50 NC38 (3 1/2 IF) Box13 Crossover 7 1/2 7.50 3.50 NC38 (3 1/2 IF) Pin 1.00 1948.40

3 5.50 FH Box14 5-1/2 " 21.90 DPS, Prem. (100 j 5 21/59 7.50 5.50 FH Pin 1000.00 2948.40

5.5,21.9,Premium 4 7/9 5.50 FH Box


BHA Comments:


Resistivity 8.80 3 12.00D&I 10.40Gamma Ray 11.00


Quality Control

Created By: fustun

Checked By:





District: Fann 6: 0.0 lbf/100ft2 Chokeline: barBHA Data: BHA #04_6" BHA_PDrive+ImPulse 19S Fann 100: 0.0 lbf/100ft2 Hyd Imbalance: 0 bar





m in in m bar m in m6" Bit + nozz 0.16 1.25 4.50 0.16 43.4 9 5/8" Casing 1120.00 8.68 1120.00PD 475 AA 6" 4.05 2.25 4.75 4.21 0.0 7" Casing 1243.00 6.28 2363.00Reciever Sub 1.90 2.50 4.75 6.11 0.1 Open Hole 584.00 6.00 2947.00In Line Flex+Sub 0.73 2.50 4.75 6.84 0.0IMPulse 20k Medium 11.02 3.19 4.75 17.86 44.74 3/4" Flex NM Collar 9.02 2.50 4.75 26.88 0.63-1/2 " 15.50 DPG, C 1000.00 2.60 3.23 1026.88 63.77 x 3 1/2" HWDP 63.97 2.16 3.50 1090.85 8.1Hydraulic Jar 5.40 2.25 5.00 1096.25 0.68 x 3 1/2" HWDP 73.13 2.16 3.50 1169.38 9.26 x 4 3/4" Collar 55.02 2.00 4.75 1224.40 9.73-1/2 " 15.50 DPG, C 723.00 2.60 3.23 1947.40 46.1Crossover 1.00 3.00 7.50 1948.40 0.05-1/2 " 21.90 DPS, Pr 998.60 4.78 5.36 2947.00 5.7

Bit Details Reamer Surface Equipment : 3Type: PDC Type: Length ID


Nozzles (1/32in) 3x12 Rotary Hose: 17 3.00Swivel: 2 2.50Kelly: 12 3.25Effective: 146 3.83

Motor DetailsMotor: Hydraulic Thrust: 1000 kgf Maximum WOB: 1000 kgf

Bearing Flow: % Bearing Capacity: 1000 kgf Maximum Overpull: 1000 kgfWear: %

Rotor Nozzle: in/32 On-Bottom RPM: rpm On-Bottom Pressure Drop: barMin Flowrate: L/min WOB: 1000 kgf Off-Bottom Pressure Drop: barMax Flowrate: L/min DTOR: N.m

Bearing Flowrate: L/min Delta P: bar Stall Nozzle Flowrate: L/minNozzle Flowrate: L/min Stall Motor Flowrate: L/minMotor Flowrate: L/min Mechanical HP: kW Stall WOB: 1000 kgf

Optimum HP: kW Stall DTOR: N.mRSS Flowrate: 264.17 L/min Efficiency: % Stall Pressure Drop: barRSS Actuator Flow: 2.54 %





BHA Data: BHA #04_6" BHA_PDrive+ImPulse 19Sep08Wellbore Data: WBG


Pump Flowrate: 620 696 772 848 924 1000 1076 1152 1228 1304 1380 L/minReamer flowrate: L/minMotor Pwr Section Flow: L/minMotor Bearing Flow: L/minBit Flowrate: 604 677 751 825 900 974 1049 1123 1198 1272 1346 L/min





Warnings*: P P P P P*P = Pressure above maximum, LM = Flow below motor minimum, HM = Flow above motor maximum



Bit Optimization TFA : 213.8 mm2 Nozzles: 3x12 /32 inBit Flowrate: 604 677 751 825 900 974 1049 1123 1198 1272 1346 L/minJet Velocity: 47 53 59 64 70 76 82 88 93 99 105 m/s








BHA & WELLBORE DATABHA Data: BHA #04_6" BHA_PDrive+ImPulse 19Sep08Survey Data: LV04 Rev3.0 fu 17Sep08 (with tortuosity)Wellbore Data: WBG


BHA DESCRIPTION




6" Bit .16 .16 1 1/4 4 1/2 6 74.33 NoPD 475 AA 6"-RSS Bias Unit .90 1.06 1.610 4 3/4 4 3/4 74.41 NoRSS Bias Unit's PAD .02 5.740 .03PD 475 AA 6"-RSS Control Unit 3.15 4.21 3.640 4.860 4.860 74.41 NoReciever Sub 1.90 6.11 2 1/2 4 3/4 4 3/4 64.59 NoIn Line Flex+Sub .73 6.84 2 1/2 4 3/4 4 3/4 64.59 NoIMPulse 20k Medium Flow 11.02 17.86 3 3/16 4 3/4 4 3/4 8.80 74.41 Yes4 3/4" Flex NM Collar 9.02 26.88 2 1/2 4 3/4 4 3/4 64.59 Yes3-1/2 " 15.50 DPG, Class 2 G-105 1000.00 1026.88 2.600 3.231 5 25.12 No7 x 3 1/2" HWDP D-55 63.97 1090.85 2.160 3 1/2 4 3/4 38.17 NoHydraulic Jar 5.40 1096.25 2 1/4 5 5 53.69 No8 x 3 1/2" HWDP D-55 73.13 1169.38 2.160 3 1/2 4 3/4 38.17 No6 x 4 3/4" Collar 55.02 1224.40 2 4 3/4 4 3/4 73.52 No3-1/2 " 15.50 DPG, Class 2 G-105 723.00 1947.40 2.600 3.231 5 25.12 NoCrossover 1.00 1948.40 3 7 1/2 7 1/2 187.06 No5-1/2 " 21.90 DPS, Premium S-135 998.60 2947.00 4.778 5.356 7 1/2 39.18 No


m m in9 5/8" Casing 1120.00 1120.00 8.52477" Casing 1243.00 2363.00 6.151

Open Hole 584.00 2947.00 6


m m Rotation Translation2363.00 2363.00 .25 .00

584.00 2947.00 .30 .00






YieldMax Bending

StressVon Mises

Stress% of Tensile

YieldMax Side

Force

m kN.m bar bar 1000 kgf/10 m6" Bit NO .00 1.44 .00 41.43 .60PD 475 AA 6"-RSS Bias Unit NO .00 1.44 557.22 600.46 .00RSS Bias Unit's PAD NO .00 1.44 555.81 599.06 .00PD 475 AA 6"-RSS Control UnitNO .00 1.47 428.42 512.50 1.40Reciever Sub NO .00 1.52 365.24 420.46 1.46In Line Flex+Sub NO .00 1.53 439.22 493.27 .93IMPulse 20k Medium Flow NO .00 1.65 442.84 513.87 .814 3/4" Flex NM Collar NO .00 1.73 232.95 294.12 .603-1/2 " 15.50 DPG, Class 2 NO -.07 5.22 19.82 668.23 1477.50 20.41 .507 x 3 1/2" HWDP NO .00 5.42 20.99 176.42 838.74 22.12 .24Hydraulic Jar NO .00 5.44 73.69 268.05 .308 x 3 1/2" HWDP NO .00 5.66 21.93 187.99 892.50 23.54 .346 x 4 3/4" Collar NO .00 5.96 253.58 432.30 .413-1/2 " 15.50 DPG, Class 2 NO .25 7.63 28.97 368.67 2505.16 34.60 .34Crossover NO .00 7.66 719.26 803.52 2.465-1/2 " 21.90 DPS, Premium NO .58 11.71 12.02 489.34 2198.02 23.61 .43






BHA DESCRIPTION



m m in in in deg m m kg/m6" Bit .16 .16 1 1/4 4 1/2 6 74.33 NoPD 475 AA 6"-RSS Bias Unit .90 1.06 1.610 4 3/4 4 3/4 74.41 NoRSS Bias Unit's PAD .02 5.740 .03PD 475 AA 6"-RSS Control Unit 3.15 4.21 3.640 4.860 4.860 74.41 NoReciever Sub 1.90 6.11 2 1/2 4 3/4 4 3/4 64.59 NoIn Line Flex+Sub .73 6.84 2 1/2 4 3/4 4 3/4 64.59 NoIMPulse 20k Medium Flow 11.02 17.86 3 3/16 4 3/4 4 3/4 8.80 74.41 Yes4 3/4" Flex NM Collar 9.02 26.88 2 1/2 4 3/4 4 3/4 64.59 Yes3-1/2 " 15.50 DPG, Class 2 G-105 1000.00 1026.88 2.600 3.231 5 25.12 No7 x 3 1/2" HWDP D-55 63.97 1090.85 2.160 3 1/2 4 3/4 38.17 NoHydraulic Jar 5.40 1096.25 2 1/4 5 5 53.69 No8 x 3 1/2" HWDP D-55 73.13 1169.38 2.160 3 1/2 4 3/4 38.17 No6 x 4 3/4" Collar 55.02 1224.40 2 4 3/4 4 3/4 73.52 No3-1/2 " 15.50 DPG, Class 2 G-105 723.00 1947.40 2.600 3.231 5 25.12 No

Crossover 1.00 1948.40 3 7 1/2 7 1/2 187.06 No

5-1/2 " 21.90 DPS, Premium S-135 998.60 2947.00 4.778 5.356 7 1/2 39.18 No


m m in

9 5/8" Casing 1120.00 1120.00 8.52477" Casing 1243.00 2363.00 6.151

Open Hole 584.00 2947.00 6



584.00 2947.00 .00 .20 .30 .40 .50













200.0 0.0 33.23 0.0 33.22 0.0 33.22 0.0 33.22 0.0 33.22

400.0 0.0 37.39 0.0 37.31 0.0 37.31 0.0 37.31 0.0 37.31600.0 0.0 41.51 0.0 41.33 0.0 41.33 0.0 41.33 0.0 41.33800.0 0.0 45.51 0.0 45.01 0.0 45.01 0.0 45.01 0.0 45.01

1000.0 0.0 49.1 0.0 48.07 0.0 48.07 0.0 48.07 0.0 48.071200.0 0.0 54.92 0.0 53.25 0.0 53.25 0.0 53.25 0.0 53.251400.0 0.0 58.88 0.0 56.45 0.0 56.45 0.0 56.45 0.0 56.451600.0 0.0 61.86 0.0 58.59 0.0 58.59 0.0 58.59 0.0 58.591800.0 0.0 64.79 0.0 60.55 0.0 60.55 0.0 60.55 0.0 60.552000.0 0.0 68.04 0.0 62.81 0.0 62.81 0.0 62.81 0.0 62.812200.0 0.0 71.9 0.0 65.49 0.0 65.49 0.0 65.49 0.0 65.492400.0 0.0 75.13 0.0 67.42 0.0 67.26 0.0 67.11 0.0 66.952600.0 0.0 78.05 0.0 69.56 0.0 69.02 0.0 68.47 0.0 67.92800.0 0.0 80.84 0.0 71.41 0.0 70.46 0.0 69.49 0.0 68.482947.0 0.0 82.65 0.0 72.59 0.0 71.34 0.0 70.03 0.0 68.67






BHA DESCRIPTION



m m in in in deg m m kg/m6" Bit .16 .16 1 1/4 4 1/2 6 74.33 NoPD 475 AA 6"-RSS Bias Unit .90 1.06 1.610 4 3/4 4 3/4 74.41 NoRSS Bias Unit's PAD .02 5.740 .03PD 475 AA 6"-RSS Control Unit 3.15 4.21 3.640 4.860 4.860 74.41 NoReciever Sub 1.90 6.11 2 1/2 4 3/4 4 3/4 64.59 NoIn Line Flex+Sub .73 6.84 2 1/2 4 3/4 4 3/4 64.59 NoIMPulse 20k Medium Flow 11.02 17.86 3 3/16 4 3/4 4 3/4 8.80 74.41 Yes4 3/4" Flex NM Collar 9.02 26.88 2 1/2 4 3/4 4 3/4 64.59 Yes3-1/2 " 15.50 DPG, Class 2 G-105 1000.00 1026.88 2.600 3.231 5 25.12 No7 x 3 1/2" HWDP D-55 63.97 1090.85 2.160 3 1/2 4 3/4 38.17 NoHydraulic Jar 5.40 1096.25 2 1/4 5 5 53.69 No8 x 3 1/2" HWDP D-55 73.13 1169.38 2.160 3 1/2 4 3/4 38.17 No6 x 4 3/4" Collar 55.02 1224.40 2 4 3/4 4 3/4 73.52 No3-1/2 " 15.50 DPG, Class 2 G-105 723.00 1947.40 2.600 3.231 5 25.12 No

Crossover 1.00 1948.40 3 7 1/2 7 1/2 187.06 No

5-1/2 " 21.90 DPS, Premium S-135 998.60 2947.00 4.778 5.356 7 1/2 39.18 No


m m in

9 5/8" Casing 1120.00 1120.00 8.52477" Casing 1243.00 2363.00 6.151

Open Hole 584.00 2947.00 6



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200.0 0.0 33.23 0.0 33.24 0.0 33.24 0.0 33.24 0.0 33.24

400.0 0.0 37.39 0.0 37.46 0.0 37.46 0.0 37.46 0.0 37.46600.0 0.0 41.51 0.0 41.7 0.0 41.7 0.0 41.7 0.0 41.7800.0 0.0 45.51 0.0 46.05 0.0 46.05 0.0 46.05 0.0 46.05

1000.0 0.0 49.1 0.0 50.22 0.0 50.22 0.0 50.22 0.0 50.221200.0 0.0 54.92 0.0 56.79 0.0 56.79 0.0 56.79 0.0 56.791400.0 0.0 58.88 0.0 61.7 0.0 61.7 0.0 61.7 0.0 61.71600.0 0.0 61.86 0.0 65.82 0.0 65.82 0.0 65.82 0.0 65.821800.0 0.0 64.79 0.0 70.08 0.0 70.08 0.0 70.08 0.0 70.082000.0 0.0 68.04 0.0 74.6 0.0 74.6 0.0 74.6 0.0 74.62200.0 0.0 71.9 0.0 79.81 0.0 79.81 0.0 79.81 0.0 79.812400.0 0.0 75.13 0.0 85.02 0.0 85.21 0.0 85.4 0.0 85.592600.0 0.0 78.05 0.0 88.86 0.0 89.48 0.0 90.09 0.0 90.692800.0 0.0 80.84 0.0 92.82 0.0 93.91 0.0 94.98 0.0 96.052947.0 0.0 82.65 0.0 95.32 0.0 96.74 0.0 98.15 0.0 99.56

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Anti-Collision

Drilling Program v1

AntiCollision

Drilling Program v1

ANTICOLLISION

LV04 well will be drilled from a slot on the south side of the platform and once the well nudges away from the rig, it also moves away from the offset wells. The anticollision risk is mainly on the surface section. 828 well is 2.5 meters away at the surface and 570 meters of the well was not surveyed at the surface. Due to the missing surveys, positional uncertainty of the well creates risk. Close wells and their distance to LV04 well plan is as follows:

Well Sep. Factor Minimum Distance 812 2.34 6.6 meters 826 0.06 29.18 meters 827 0.03 9.29 meters 828 0.02 8.47 meters 830 3.00 2.93 meters LV7 2.33 2.24 meters LV3 5.19 4.29 meters

It is required by Schlumberger Anti-Collision standart that all these offset wells should be gyro surveyed to minimize the uncertainty and the risk. Especially the positional uncertainty of 828 well is creating high risk. As a secondary prevention measure, using a deviated casing shoe at the surface to nudge away from the platform will also helps the anticollison situation.

Once the well is nudged away, LV04 crosses 812 and IV02 wells but there is no A/C issue due to TVD difference.

Client: Petrom Slot: LVO4Field: Delta - Lebada West Well: LVO4Structure: Jupiter Borehole: LVO4Subject Trajectory: LV04 Rev3.0 fu 17Sep08 (PLAN) Rpt Date: September 20, 2008Analysis Method: 3D Least Distance Depth Interval: Every 1.00m MD

EOU Type: Oriented EOU used. Min Pts: All local minima indicated. ProbColMax: 1:25959

Drilling Program v1 Mag Model: BGGM 2008

Offset Trajectory Sep. Allow Sep. Subject Trajectory Separation Factor Alert StatusCt-Ct (m) Dev. (m) Fact. MD (m) TVD (m) Alert Minor Major

812 Surveys (SURVEY) PASS32.71 31.94 22589.53 0.00 0.00 Surface

31.55 30.73 848.88 5.00 5.00 MinPt-O-SF

31.17 30.39 2377.92 9.00 9.00 MinPt-O-ADP

31.16 30.39 21491.15 39.00 39.00 MinPt-CtCt

31.21 30.44 5079.45 70.00 70.00 MinPt-O-SF

29.83 28.17 48.55 180.00 180.00 MinPt-O-SF

12.57 8.24 4.97 468.00 467.59 5.00 Enter Alert

6.61 2.10 2.34 559.00 558.06 MinPt-O-SF

6.60 2.09 2.34 560.00 559.05 MinPt-O-ADP

6.60 2.10 2.34 561.00 560.04 MinPt-CtCt

13.68 9.02 4.98 624.00 622.19 5.00 Exit Alert

56.17 46.87 9.74 1149.00 1084.47 MinPt-O-SF

74.32 63.03 10.48 1325.00 1211.07 MinPt-O-SF

119.10 97.88 8.68 1738.00 1508.16 MinPt-O-SF

123.63 101.65 8.68 1766.00 1528.30 MinPt-O-SF

700.84 660.97 26.85 2947.46 1942.80 TD821 Surveys (SURVEY) PASS

32.91 32.15 22732.54 0.00 0.00 Surface

31.76 30.94 860.34 5.00 5.00 MinPt-O-SF

31.38 30.60 2410.81 9.00 9.00 MinPt-O-ADP

31.37 30.60 21641.25 69.00 69.00 MinPt-CtCt

40.97 36.63 16.87 492.00 491.48 MinPt-O-ADP

41.36 36.83 16.14 510.00 509.40 MinPt-O-SF

53.07 48.14 18.81 745.00 740.29 MinPt-O-SF

53.58 48.61 18.82 752.00 747.02 MinPt-O-SF

759.62 737.65 53.67 1808.00 1558.51 MinPt-O-SF

1836.98 1807.04 94.41 2947.46 1942.80 TD821 Bis Surveys (SURVEY) PASS

32.91 32.15 22732.54 0.00 0.00 Surface

31.76 30.94 860.34 5.00 5.00 MinPt-O-SF

31.38 30.60 2410.81 9.00 9.00 MinPt-O-ADP

31.37 30.60 21641.25 69.00 69.00 MinPt-CtCt

40.97 36.63 16.87 492.00 491.48 MinPt-O-ADP

ANTICOLLISION SUMMARY REPORT


41.36 36.83 16.14 510.00 509.40 MinPt-O-SF

53.07 48.14 18.81 745.00 740.29 MinPt-O-SF

53.58 48.61 18.82 752.00 747.02 MinPt-O-SF

759.62 737.65 53.67 1808.00 1558.51 MinPt-O-SF

1249.48 1210.69 49.26 2341.00 1846.52 MinPts

1797.84 1752.23 60.11 2947.46 1942.80 TD825 Surveys (SURVEY) PASS

13.66 12.90 9119.75 0.00 0.00 Surface

10.96 10.07 117.10 5.00 5.00 MinPt-O-SF

10.15 9.38 1639.85 9.00 9.00 MinPt-O-ADP

10.15 8.70 20.36 160.00 160.00 MinPt-CtCt

10.72 8.10 8.02 297.00 296.96 MinPt-O-ADP

15.76 10.77 5.32 437.00 436.70 MinPt-O-SF

291.71 270.19 21.02 1339.00 1221.14 MinPt-O-SF

309.96 286.20 20.17 1382.00 1252.07 MinPt-O-ADP

430.16 389.54 16.16 1741.00 1510.31 MinPt-O-ADP

487.26 436.36 14.55 1943.00 1653.06 MinPt-O-SF

502.97 450.29 14.51 1982.00 1678.33 MinPt-O-SF

527.73 472.33 14.47 2035.00 1710.81 MinPt-O-SF

545.51 486.60 14.05 2070.00 1730.98 MinPt-O-ADP

548.16 488.95 14.05 2076.00 1734.33 MinPt-O-SF

566.68 505.71 14.10 2115.00 1755.32 MinPt-O-SF

1199.69 1111.44 20.56 2947.46 1942.80 TD826 Surveys (SURVEY) FAIL_MAJOR

31.24 30.48 21553.58 0.00 0.00 Surface

30.36 29.55 1014.52 4.00 4.00 MinPt-O-SF

29.99 29.21 2968.65 8.00 8.00 MinPt-O-ADP

29.98 19.67 4.59 90.00 90.00 5.00 Enter Alert29.98 -0.05 1.50 109.00 109.00 1.50 Enter Minor29.98 -15.62 0.98 124.00 124.00 1.00 Enter Major

29.18 -538.32 0.08 378.00 377.85 MinPt-CtCt

29.81 -674.39 0.06 459.00 458.62 MinPt-O-SF

29.82 -674.55 0.06 460.00 459.62 MinPt-O-ADP

125.03 -534.22 0.28 918.00 900.71 MinPt-O-ADP

139.71 -537.48 0.31 1004.00 974.05 MinPt-O-ADP

153.12 -534.15 0.33 1124.00 1066.48 MinPt-O-ADP

465.09 -232.34 1.00 2174.00 1784.31 1.00 Exit Major697.31 -0.25 1.50 2456.00 1873.79 1.50 Exit Minor

1145.36 448.13 2.47 2947.46 1942.80 TD827 Surveys (SURVEY) FAIL_MAJOR

13.10 12.34 8725.54 0.00 0.00 Surface

10.26 9.36 102.04 5.00 5.00 MinPt-O-SF

9.39 8.62 1393.20 9.00 9.00 MinPt-O-ADP


9.29 -304.91 0.04 256.00 255.99 MinPt-CtCt

11.19 -576.68 0.03 388.00 387.83 MinPt-O-SF

15.85 -735.39 0.03 475.00 474.56 MinPt-O-ADP

85.73 -665.21 0.17 915.00 898.06 MinPt-O-ADP

103.26 -648.61 0.20 1133.00 1072.96 MinPt-O-ADP

103.32 -648.47 0.20 1159.00 1091.66 MinPt-CtCt

103.32 -648.48 0.20 1160.00 1092.38 MinPt-O-SF

103.32 -648.48 0.20 1162.00 1093.82 MinPt-O-ADP

118.76 -623.60 0.24 1669.00 1458.52 MinPt-O-ADP


120.97 -625.73 0.24 1781.00 1539.09 MinPt-O-SF

121.30 -626.78 0.24 1791.00 1546.28 MinPt-O-ADP

481.58 -240.52 1.00 2565.00 1891.66 1.00 Exit Major680.33 -0.03 1.50 2827.00 1928.64 1.50 Exit Minor767.30 95.65 1.71 2947.46 1942.80 TD

828-1 Surveys - with gyro (DEF SVY) FAIL_MAJOR12.94 12.17 8607.81 0.00 0.00 Surface

10.05 9.14 97.67 5.00 5.00 MinPt-O-SF

9.15 8.38 1321.68 9.00 9.00 MinPt-O-ADP


8.47 -428.11 0.03 315.00 314.95 MinPt-CtCt

9.49 -584.59 0.02 391.00 390.83 MinPt-O-SF

28.88 -986.80 0.04 610.00 608.41 MinPt-O-ADP


1866.61 890.89 2.87 2947.46 1942.80 TD828-2 Surveys (SURVEY) FAIL_MAJOR

12.94 12.17 8607.81 0.00 0.00 Surface

10.05 9.14 97.67 5.00 5.00 MinPt-O-SF

9.15 8.38 1321.68 9.00 9.00 MinPt-O-ADP


8.47 -428.11 0.03 315.00 314.95 MinPt-CtCt

9.49 -584.59 0.02 391.00 390.83 MinPt-O-SF

28.88 -986.80 0.04 610.00 608.41 MinPt-O-ADP


1866.61 890.89 2.87 2947.46 1942.80 TD828-3 Surveys (SURVEY) FAIL_MAJOR

12.77 12.00 8488.69 0.00 0.00 Surface

9.95 9.05 101.61 5.00 5.00 MinPt-O-SF

9.20 8.38 233.57 8.00 8.00 MinPt-O-ADP


8.47 -428.36 0.03 315.00 314.95 MinPt-CtCt

9.49 -584.84 0.02 391.00 390.83 MinPt-O-SF

28.87 -986.55 0.04 610.00 608.41 MinPt-O-ADP


1866.68 891.23 2.87 2947.46 1942.80 TD830 surveys with 1000 m gyro (DEF SVY) PASS

6.69 5.92 4190.07 0.00 0.00 Surface

2.63 1.70 16.66 5.00 5.00 MinPt-O-SF

2.32 1.50 46.45 6.00 6.00 MinPt-O-ADP

2.30 1.54 1086.98 46.00 46.00 MinPt-CtCt

2.30 1.53 405.26 49.00 49.00 MinPt-O-ADP

2.35 1.57 107.72 57.00 57.00 MinPt-O-SF

2.80 1.42 4.98 123.00 123.00 5.00 Enter Alert

2.93 1.11 3.08 158.00 158.00 MinPt-CtCt

2.93 1.09 3.01 163.00 163.00 MinPt-O-ADP

2.94 1.09 3.00 167.00 167.00 MinPt-O-SF

3.74 2.08 4.93 213.00 213.00 5.00 Exit Alert


6.28 4.41 7.46 284.00 283.97 MinPt-O-SF

9.33 6.83 7.38 341.00 340.92 MinPt-O-SF

1678.32 1649.86 90.85 2947.46 1942.80 TDIV-2 Surveys (SURVEY) PASS

11.81 11.05 7812.73 0.00 0.00 Surface

8.68 7.77 76.26 5.00 5.00 MinPt-O-SF

7.81 6.98 163.73 8.00 8.00 MinPt-O-ADP

7.75 6.99 4943.37 9.00 9.00 MinPt-CtCt

8.52 6.93 14.05 159.00 159.00 MinPt-O-ADP

8.70 7.04 13.19 180.00 180.00 MinPt-O-SF

8.81 7.12 13.06 234.00 233.99 MinPt-O-SF

8.26 6.20 8.65 335.00 334.92 MinPt-CtCt

8.41 6.07 7.27 365.00 364.88 MinPt-O-ADP

11.32 7.87 5.90 454.00 453.64 MinPt-O-SF

491.18 476.26 51.99 1540.00 1365.73 MinPt-O-SF

589.32 571.49 51.73 1699.00 1480.10 MinPt-O-SF

875.46 845.53 44.99 2163.00 1779.16 MinPt-O-ADP

905.43 874.40 44.84 2215.00 1802.38 MinPt-O-SF

911.87 880.63 44.84 2226.00 1806.93 MinPt-O-SF

950.99 918.37 44.74 2292.00 1831.47 MinPt-O-SF

1036.24 1000.57 44.49 2431.00 1869.41 MinPt-O-SF

1239.21 1196.28 44.05 2736.00 1916.75 MinPt-O-SF

1392.47 1347.88 47.62 2947.46 1942.80 TDIV-3 Surveys (SURVEY) PASS

30.39 29.63 20951.97 0.00 0.00 Surface

29.90 29.12 1852.11 3.00 3.00 MinPt-O-SF

29.71 28.95 7769.82 6.00 6.00 MinPt-O-ADP

29.71 28.95 20470.12 7.00 7.00 MinPt-CtCt

30.22 29.42 1154.88 67.00 67.00 MinPt-O-SF

32.16 30.54 54.79 180.00 180.00 MinPt-O-SF

32.14 30.48 52.36 242.00 241.99 MinPt-CtCt

29.78 26.46 17.03 464.00 463.60 MinPt-CtCt

29.95 26.06 13.98 504.00 503.43 MinPt-O-ADP

30.01 26.07 13.80 510.00 509.40 MinPt-O-SF

39.98 35.24 14.80 747.00 742.22 MinPt-O-SF

40.32 35.55 14.80 752.00 747.02 MinPt-O-SF

1865.93 1841.82 119.79 2947.46 1942.80 TDLV07 Surveys (SURVEY) PASS

12.17 11.40 8063.32 0.00 0.00 Surface

8.62 7.71 77.94 6.00 6.00 MinPt-O-SF

8.03 7.26 1003.91 9.00 9.00 MinPt-O-ADP

3.16 1.67 4.95 160.00 160.00 5.00 Enter Alert

2.33 0.52 2.25 186.00 186.00 MinPt-CtCt

2.33 0.52 2.25 187.00 187.00 MinPt-O-ADP

2.34 0.52 2.24 188.00 188.00 MinPt-O-SF

4.14 2.34 4.89 221.00 221.00 5.00 Exit Alert2071.49 2050.10 150.58 2947.46 1942.80 TD

LV-10 Surveys (SURVEY) PASS32.33 31.57 22323.72 0.00 0.00 Surface

31.48 30.68 1091.73 4.00 4.00 MinPt-O-SF

31.12 30.35 3200.25 8.00 8.00 MinPt-O-ADP

31.11 30.35 21460.63 9.00 9.00 MinPt-CtCt

31.54 30.75 1520.74 70.00 70.00 MinPt-O-SF

32.37 30.87 63.72 160.00 160.00 MinPt-O-ADP

32.51 30.93 58.05 180.00 180.00 MinPt-O-SF


32.74 31.06 52.27 219.00 219.00 MinPt-O-ADP

33.19 31.00 33.99 296.00 295.96 MinPt-O-ADP

39.87 35.23 15.14 510.00 509.40 MinPt-O-SF

530.45 505.54 32.91 2069.00 1730.42 MinPt-O-SF

604.69 576.73 33.30 2204.00 1797.71 MinPt-O-SF

1196.73 1154.76 43.54 2947.46 1942.80 TDLV11 Surveys (SURVEY) FAIL_MAJOR

31.03 30.27 21402.88 0.00 0.00 Surface

30.14 29.33 999.73 4.00 4.00 MinPt-O-SF

29.77 28.99 2924.28 8.00 8.00 MinPt-O-ADP

29.76 28.99 20502.05 9.00 9.00 MinPt-CtCt


31.71 -91.52 0.38 229.00 229.00 MinPts

31.71 -91.52 0.38 232.00 231.99 MinPt-O-ADP

30.86 -92.43 0.37 432.00 431.72 MinPt-CtCt

30.86 -92.43 0.37 433.00 432.71 MinPt-O-SF

30.86 -92.43 0.37 436.00 435.70 MinPt-O-ADP

82.40 -41.03 1.00 903.00 887.41 1.00 Exit Major123.78 -0.24 1.50 1042.00 1004.67 1.50 Exit Minor426.18 297.74 5.00 1721.00 1495.93 5.00 Exit Alert

1451.04 1309.11 15.41 2947.46 1942.80 TDLVO1 Surveys (SURVEY) PASS

12.76 12.00 8484.47 0.00 0.00 Surface

9.82 8.91 93.15 5.00 5.00 MinPt-O-SF

8.91 8.13 1247.82 9.00 9.00 MinPt-O-ADP

6.60 5.00 10.40 189.00 189.00 MinPts

6.60 5.02 10.68 197.00 197.00 MinPt-CtCt

7.03 5.41 10.88 279.00 278.98 MinPt-O-SF

15.27 11.83 8.14 457.00 456.63 MinPt-O-SF

658.69 640.89 57.93 1779.00 1537.65 MinPt-O-SF

1657.72 1626.43 81.41 2947.46 1942.80 TDLV03 Gyro Surveys (DEF SVY) PASS

4.46 3.69 2612.53 0.00 0.00 Surface

4.46 3.69 2612.53 17.00 17.00 MinPts

4.29 2.57 5.52 154.00 154.00 MinPt-CtCt

4.31 2.52 5.19 160.00 160.00 MinPts

9.89 8.42 19.23 260.00 259.99 MinPt-O-SF

33.91 29.33 13.02 500.00 499.45 MinPt-O-SF

210.16 200.55 35.50 1013.00 981.40 MinPt-O-SF

214.97 205.16 35.52 1024.00 990.31 MinPt-O-SF

389.06 371.00 33.68 1378.00 1249.19 MinPt-O-SF

393.38 375.13 33.68 1386.00 1254.95 MinPt-O-SF

484.21 462.19 34.12 1546.00 1370.04 MinPt-O-SF

603.84 576.47 34.00 1751.00 1517.51 MinPt-O-SF

638.64 609.69 33.95 1812.00 1561.39 MinPt-O-SF

1679.83 1639.12 63.05 2947.46 1942.80 TD

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WELL FIELD STRUCTURE

Magnetic ParametersModel: Dip:

Mag Dec:Date:FS:

Surface LocationLat:Lon:

Northing:Easting:

Grid Conv:Scale Fact:

MiscellaneousSlot:Plan:

TVD Ref:Srvy Date:

PetromLVO4 Delta - Lebada West PFS-6 - Lebada

BGGM 2008 62.027°+5.083°

September 17, 200848407.1 nT

UTM CM 30E - WGS84, MetersN44 31 57.159E29 28 4.328

4931161.80 m457720.30 m

-0.37319667°0.9996219823

LVO4LV04 Rev3.0 fu 17Sep08

RKB (32.80 m above MSL)September 17, 2008

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MAGNETIC INTERFERENCE SCAN REPORTAnalysis Method: 3D Least Distance Distance Unit: mDepth Interval: Every 30.00m Measured Depth Azimuth Unit: degreesStep-down Trajectory: Subject Trajectory TC Azimuth Reference: NorthAnalysis Date-24hr Time: 20-September-2008 - 18:15:39 Magnetic Model: BGGM 2008Analysis Machine: FUSTUN4-OFS North Reference: TRUEDatabase / Project: LOCAL-DB.WORLD/proj1Version / Patch: Version DO 4.0 ( doc40x_100 ) / SP 2.1 Drilling Program v1

NOTE: Trajectories from the same slot as the subject trajectory are omitted except when they deviatemore than 0.30m from the subject trajectory wellbore.

All Local Minimum Mag Separations Indicated. Analysis Includes Trajectory Types: SURVEY - DEF SVYResults highlighted: Mag Separation <= 15.24 mSubject Trajectory Summary

Client: Petrom

Field: Delta - Lebada West Well: LVO4Structure: Jupiter Borehole: LVO4Slot: LVO4 Trajectory: LV04 Rev3.0 fu 17Sep08

Type: PLAN

Coordinate System: UTM CM 30E - WGS84, MetersNorth Reference: TRUE Grid Convergence Angle: -0.37319667° Grid Scale Factor: 0.99962198Magnetic Declination: +5.083° Magnetic Declination Date: 17-Sep-2008Reference Point:Northing (m) Easting (m) Elevation (m) Structure Unc. (m) Slot Unc. (m) Hole Diameter (cm)N 4931161.800 E 457720.300 32.80 above MSL 0.000 0.000 76.200

Trajectory ESLB ISCWSA version 24 *** 3-D 95.00% Confidence 2.7955 sigmaSurveying Prog:MD From (m) MD To (m) EOU Freq Survey Tool Type

0.00 500.56 1/30.00 m SLB_GYRO-MWD500.56 2947.46 1/30.00 m SLB_MWD-STD

Offset Trajectories SummaryOffset Selection CriteriaWellhead distance scan: Not performed!Selection filters: Definitive Surveys

Offset Selection SummaryWells Selected: 14Boreholes Selected: 17Definitive Surveys Selected: 3Non-Def Surveys Selected: 14Definitive Plans Selected: 0Non-Def Plans Selected: 0Total Trajectories: 17

Trajectory Borehole Well Type812 Surveys 812 812 SURVEY821 Surveys 821 821 SURVEY821 Bis Surveys 821 Bis 821 SURVEY825 Surveys 825 825 SURVEY826 Surveys 826 826 SURVEY827 Surveys 827 827 SURVEY828-1 Surveys - with gyro 828-1 828 DEF SVY828-2 Surveys 828-2 828 SURVEY828-3 Surveys 828-3 828 SURVEY

830 surveys with 1000 m gyro 830 830 DEF SVYIV-2 Surveys IV-2 IV-2 SURVEYIV-3 Surveys IV-3 IV-3 SURVEYLV07 Surveys LV07 LV07 SURVEYLV-10 Surveys LV-10 LV10 SURVEYLV11 Surveys LV11 LV11 SURVEYLVO1 Surveys LVO1 LVO1 SURVEYLV03 Gyro Surveys LVO3 LVO3 DEF SVY

Magnetic Scan ResultsLV04 Rev3.0 fu 17Sep08

MD (m) TVD (m) DISTANCE (m)0.00 0.00 1.69

30.00 30.00 1.6960.00 60.00 1.7290.00 90.00 1.79

120.00 120.00 1.81150.00 150.00 1.71

180.00 180.00 1.52

210.00 210.00 1.84240.00 239.99 2.28270.00 269.98 2.55300.00 299.96 2.75330.00 329.93 2.93360.00 359.89 3.12390.00 389.83 3.40420.00 419.75 3.76450.00 449.66 4.19480.00 479.54 4.60510.00 509.40 4.87540.00 539.22 4.87570.00 568.95 5.04600.00 598.56 6.48630.00 628.10 8.25660.00 657.58 9.70690.00 686.94 10.88720.00 716.13 11.96750.00 745.10 13.05780.00 773.80 14.24810.00 802.16 15.66840.00 830.14 17.37870.00 857.68 19.33900.00 884.73 21.43930.00 911.25 23.58960.00 937.18 25.77990.00 962.47 27.97

1020.00 987.08 30.001050.00 1010.96 31.931080.00 1034.07 33.771110.00 1056.36 35.571140.00 1077.99 37.331170.00 1099.57 39.021200.00 1121.15 40.811230.00 1142.73 42.671260.00 1164.31 44.681290.00 1185.89 46.791320.00 1207.47 48.901350.00 1229.05 50.961380.00 1250.63 52.991410.00 1272.21 54.901440.00 1293.79 56.711470.00 1315.37 58.461500.00 1336.95 60.201530.00 1358.53 62.011560.00 1380.11 63.821590.00 1401.69 65.561620.00 1423.27 67.241650.00 1444.85 68.671680.00 1466.43 69.871710.00 1488.01 70.981740.00 1509.59 72.36

1770.00 1531.18 74.151800.00 1552.76 76.391830.00 1574.34 78.951860.00 1595.89 81.651890.00 1617.05 84.671920.00 1637.66 88.021950.00 1657.68 91.601980.00 1677.06 95.462010.00 1695.77 99.582040.00 1713.76 104.042070.00 1730.98 108.802100.00 1747.41 113.872130.00 1763.01 119.402160.00 1777.74 125.432190.00 1791.57 131.642220.00 1804.47 137.992250.00 1816.41 144.622280.00 1827.36 151.512310.00 1837.31 158.572340.00 1846.24 165.782370.00 1854.78 173.012400.00 1862.74 180.332430.00 1869.22 187.912460.00 1874.47 195.682490.00 1879.52 203.462520.00 1884.46 211.222550.00 1889.29 218.952580.00 1894.00 226.682610.00 1898.61 234.402640.00 1903.11 242.102670.00 1907.49 249.722700.00 1911.77 257.172730.00 1915.93 264.582760.00 1919.98 271.952790.00 1923.93 279.232820.00 1927.76 286.502850.00 1931.48 293.752880.00 1935.09 300.972910.00 1938.59 308.182940.00 1941.97 315.382947.46 1942.80 317.17

Documents

Basis of Design West Lebada LV04_v2