End of Well Report

8/10/2019 End of Well Report

1/21

1

NIGER DELTA PETROLEUM RESOURCES LIMITED

44 East West Road, Rumuodara, Port Harcourt

END OF WELL REPORTOGBELLE-1 INITIAL COMPLETION

1.0 Executive summary:

Ogbelle-1 is located in OML-54. Drilled in 1980 as an exploration well to a depth of 13600ft,was temporarily abandoned with three strings of casing, 13-3/8, 9-5/8 and 7 casing cementedin place. The G, E, D sands discovered in the well, were subjected to DST tests afterperforating casing. Thereafter, the well was abandoned with several 6 EZSV plugs and

squeezed off with 4 cement plugs totaling 800ft in the 7 casing while the 9-5/8 casing wasabandoned with 2 EZSV plugs and squeezed off with 3 cement plugs totaling 600ft.

The re-entry objective was to attain a two string dual (TSD) completion with the Long string onthe E6.0 and the short string on the D3.0 reservoirs.DWC-10 a 525HP rig started operation on the well February 4, 2005. After initial wellhead rigup, the rig commenced drilling out cement and plug from the 9-5/8 casing.While breaking a bitconnection during a bit change, the derrick shook violently, twisted and fell. This rendered therig not operable. Therefore, operation was therefore suspended on the February 16, 2005 toenable the rig Debris be cleared and another rig sourced to continue with the operation.

DWC rig 20 a 1200HP was mobilized and accepted to commence operations June 14, 2005.The original objectives of the reentry were then changed to include the deeper G3.0 reservoirdue to availability of the higher capacity DWC 20 rig. The well was then to be completed as aTwo String Multiple (TSM) with long sting, selective on the G3.0 and E6.0 reservoirs and theshort string on the D3.0 reservoir.

The 9-5/8 casing was then cleared of plugs and cement to top o f liner at 10093ft. The integrityof the sealing on the top liner was ascertained by performing inflow test on it. Thereafter thecement and plugs in the 7 casing was drilled out to 13290ft.

Note that after drilling out the plug above the G1.0 at 12920ft, the reservoir pressure caused

the well to flow. This was brought under control with a mud weight of 0.5psi/ft.

Logs were taken and the G3.00, E6.00 and D3.00 sands were perforated. After perforating theG3.0 Mod D packer was set above the G3.0 perforations after which a straddle packerassembly was set above the G1.0 to isolate it from the well bore.

Tubing size 3-1/2 was ran as long string, 2-3/8 as short string and the well completed as aTSMTwo string Multiple with long string selective on G3.00 and E6.00 and D3.00.as shortstring.

The strings were cleaned up and produced to clean reservoir fluids. Established rates are as

follows :


2/21

2

SAND BEAN SIZE PRODUCTIONRATE

BSW REMARKS

G3.0 8

12

1416

20

E6.00 8

12

16

18

20

D3.00 8

12

14

1620

2.0. WELL PROGRAM AND AMENDMENTS

Original well program is attached as Appendix I

Amendment 1 to NDPR-1 (Otari) well initial completion program.

Background.

a. Prior to the incident of February 16, 2005, the DWC rig 10 had cleaned Ogbelle 1 wellbore in the 95/8 casing from surface to 9340ft. After the incident, the DWC rig 20 ahigher capacity rig was being mobilized to continue the well operation. Consequently,the original clean up program and completion design is being amended.

b. Similarly, all efforts to set the test plug in the DCB for the purpose of testing the BOPS,prior to 16thFeb were unsuccessful. In other to prevent difficulties landing thecompletion strings in the DCB at the completion phase, it is planned to inspect theDCB immediately after the rig acceptance audit as follows:

a. Check wellhead pressures and report to base immediately, if any pressure isrecorded. Further instructions will follow; otherwise continue with item2.

b. Open blind rams. MU 30ft x 31/2 DP below a retrievable packer + safety joint.RIH ondps to 3000ft. Install Kelly cock inside BOPS. MU landing JT. Setpacker at cica 3000ft. Back off landing joint and suspend string 10ft belowwellhead.

c. Lift BOPS and inspect DCB. If okay, run plug tester to check bore. If okay, sithangers in DCB, if okay NU BOPS and test. If not okay replace DCB.

d.

MU landing jt. Unset pkr, POH and LD.e. Continue with item 7 on the main program.


3/21

3

AMENDMENT 2

AMENDMENT No. 3 TO NDPR-1 (OTARI) COMPLETION PROGRAM

A. BACKGROUND :

Most of the challenging well bore preparation is the 7 casing. It is intended to clean out to theG3.0 sand with the DWC- 20, taking advantage of its higher hoisting capacity. Be that as itmay, all hands must be on deck to achieve a successful clean out operation.The greatest challenge is to ensure successful runs with the Rock bit without loosing any conein hole.

After inflow testing TOL, D1.0 perforations and suspected casing suspect 9342ft continue asfollows.:

1.

MU 6 PDC bit . RIH to TOL Continue drill out cement from 10000ft to top EZSV plugsat 10777ft. Circ clean and POH.

2. MU 6 rock bit and RIH to 10777ft. Drill out EZSVs and cement until bit dull. Changebit and drill out cement plus plugs top EZSV at 13290ft.

3. Circulate clean and displace hole to brine, SG. 0.452psi/ft. Observe well for 30mins.4. POH Bit assy.5. Make up and run in whole 6 tapered mill and tandem 7 and 9 -5/8 scraper to top liner.

7 scraper should be spaced 3630 ft from 9-5/9 scraper(TOL to TD is 3629ft).NOTE: At TOL, circulate and rotate tapered mill across TOL several times and continueRIH to TD at 13290ft.6. Carryout well bore cleaning as per well bore clean up program (Attached). Brine wt is

0.452 psi/ft. Target NTU is 20 and solid content is 10.

7. POH mill and tandem scrapers assy while laying down drill pipes.

8. Carryout routine BOP test

Wire line operations.

NOTE:The D3.000 sand has not been perforated before. Therefore the exact reservoir

pressure is not known. Similarly the G3.00 and E6.00 that were perforated were produced foronly two hours each, the reservoir pressures might also still be a little speculative.It is recommended that special attention be paid to the well immediately after perforating eachinterval and monitored through the perforation operations

1. RU Schlumberger

2. GR / CCL. From 13290 - 9000ft

3. Rig up shooting Nipple and install WL BOPs. Test WL BOPs to 1000psi

MU20ft (10 + 10 with 8ft spacer) x 4-1/2 OD gun assembly ( HSD, power jet 4512,12 spf, 135/45deg phasing, deep penetrating charges).


4/21

4

4. RIH and perforate G3.0 at 1325613266ft and 1327413284 ft.

Note: Fill up well with brine and check for losses/gain. Report to base if either occurs.POH gun.

5. PU Mod D packer Size 84-32 with expendable plug installed set packer at 13200ft.and POH

6. RIH12ft x 4-1/2 OD gun assembly( HSD, power jet 4512, 12 spf, 135/45degphasing, deep penetrating charges) and perforate E6.0. at 1081810830ft.

Note: Fill up well bore with brine and check for losses/gain. Report to base if either occursPOH gun.

7.

RIH 6ftx 7 OD gun assembly ( HSD, power jet 4512, 12 spf,135/45deg phasing,deep penetrating charges and perforate D3.0 sand at 9476 - 9482ft.

Note: Fill up well bore with brine and check for losses/gain. Report to base if either occursPOH gun. POH gun.

Running 3-1/2 Completion Long string (L/S)

1. Prepare rig floor and rig up for running 3-1/2 tubing.

NOTE: 1. Tail pipe is 2-3/8 tubing.2. Optimum MU Torque for 3-1/2 HCS is 3000ft-lb

2. RIH tail pipe assy.(2-3/8) + G- locator seal assy crossover to 3-1/2 HCS.

3. MU 3-1/2 tubing and RIH to Blast joint sub assy as per space out program.

4. MU Baker model HS packer and RIH. As per space out program.

5. MU Model GT dual packer assy with S/S tale pipe as per space out.

6.

Continue RIH to12900 SCSSV depth.

7. Install safety valve. Flush control line and Connect to Safety valve.

8. RIH to 13100ft(top packer) and strap C/L

9. Lower string in slips. RU slick line.

10.Run 2.992 drift to top x/o at 13159ft.

11.POH and RD W/L.

12.PU string RIH and push out Expendable plug from Mod D packer.


5/21

5

13.Stab into Mod D with 15kips. Test annulus 500psi.

14.PU 1 ft and retest 500psi Annulus.

15.

Space out string and install hanger.

16.Flush hanger and Install C/L to hanger.

17.MU landing Jt and Land string in DCB.

18.Remove landing Jt. Install NRV in hanger.

Running 2-3/8 Completion Short string (S/S).

NOTE: 1. Optimum MU Torque for 2-3/8 EUE Tubing is 1800ft-lb

1. Change pipe rams to 2-3/8 offcet.

2. PU tail pipe seal assy- shot string.

3. RIH to top GT Dual packer at 9399ft.

4. Circulate bottoms up.5. Stab into GT dual packer with 10kips. Pull on string to snap out of packer.6.

Space out and install SCSSSV in string. Install Hanger. MU landing Jt . RIH and landstring in DCB.

7. RU W/L. RIH 1.875 drift to XN at 9417ft8.

RD W/L. Install NRV from hanger

Packer setting sequence.

1. RU landing Jt on L/S and install Circulating head. Drop 1-3/4 steel ball in long string.Chase ball to bottom.

2. Pressure up string to set Mod HS packer in stages of 500 psi to 1500psi. Pressure upfurther to 2500spi to test string. Observe pressure for 10mins. Pressure up further to3000psi to shear out hydro trip sub.

3. Install NRV in hanger.

4.

Retrieve NRV from S/S hanger. RU landing jt. Drop 1-3/4 steel bal in S/S and chaseball to ball seat in Hydro trip sub at 9420ft.5. Pressure up string to set Mod HS packer in stages of 500 psi to 1500psi. Pressure up

further to 2500spi to test string. Observe pressure for 10mins. Pressure up further to3000psi to shear out hydro trip sub.

Well head operation.1. Report to base if either occurs RD landing jt. Install TWCV in S/S. Retrieve NRV fromL/S and install TWCV.2. Screw in all lock nuts on hanger. Energise hanger seals and test 500psi. through

annulus.3. Flange down BOPS. Install X-mass tree. Test X-mass tree and valves to 5000psi.

4. Retrieve TWCV in hangers.5. RU slick line. Open XA sleeve in L/S at 9459ft.


6/21

6

6. Displace L/S and S/S to diesel.7. Close XA sleeve at 9459ft. Check sleeve closed by pumping 500psi into L/S. Observecorresponding pressure in shot string gauge. Bleed off displacing pressures on bothstrings. Record final pressures.8. RD slick line. Install NRV in both strings.

SUSPEND WELL FOR RIG MOVE.

ADDENDUM 2 TOAMENDMENT No. 3 TO NDPR-1 (OTARI) COMPLETIONPROGRAM

A. BACKGROUND:As a result of inadequate cement squeeze job on the perforations of the G1.0 sands whichgave rise to an inflow of gas from the reservoir, and subsequent well control wit 0.5 psi/ft mudweight, it is imperative that we isolate the mobile G1.0 gas reservoir Thus still in current mudmode operation will continue until the G1.0 reservoir has been isolated as follows:

1. Continue drilling out EZSVs and cement until bit dull. Change bit and drill out cementplus plugs to top of EZSV at 13290ft.

2. Circulate clean with mud in hole of SG. 0.5psi/ft in and out with viscous spill. Observewell for 30mins.

3. POOH Bit assy.4. Make up and RIH 6 tapered mill and scraper from 10,093ft to 13,290ft5. Circulate Hole clean and POOH


NOTE :1. It is recommended that special attention be paid to the well at all times and especially

after perforating each interval.2. Ensure that 50bbls LCM Pill is available at all times.

8. RU Schlumberger

9. RIH Junk basket - GR / CCL Gauge ring size 6.184 Log up between 13,290ft9,000ft

10.Log RST at the following intervals

a. F3.0 12,30012,360 ftAHDb. F1.0 12,01812,133 ftAHDc. E10.0 11,85611,924 ft AHDd. E9.0 11,69511,818 ftAHDe. E8.0 11,56811,652 ftAHDf. E1.0 10,34010,450 ftAHDg. D1 & D3.0 9,3009,500 ftAHDh. E6.0 10,81810,858ftAHD

11.Rig up shooting Nipple and install WL BOPs. Test WL BOPs to 1000psi

MU20ft (10 + 10 with 8ft spacer) x 4-1/2 OD gun assembly ( HSD, power jet 4512,12 spf, 135/45deg phasing, deep penetrating charges).


7/21

7

12.RIH and perforate G3.0 at 1325613266ft and 1327413284 ft.

Note: Fill up well with brine and check for losses/gain. Report to base if either occurs.

13.

POH gun

14.PU Mod D packer Size 84-32 install set packer at 13200ft. and POOH

15.RD Schlimberger.

16.MU on DP Model FBGP Packer plus tail assembly

17.RIH and stab into Model D packer at 13, 200 ft. Pull up 1ft.

18.

Check stabbing 500psi through annulus, if okay set Model FBGP 12,850 ft

19.Set packer according to Baker Engineers instruction.20.Release setting tool and pick up combo tool 5ft above port collar. Slack off and open

port collar. Close Annular preventer and test pkr setting 500psi and report resultimmediately to base( Ilesanmi )

21.Pick up +- 20ft and close port collar. Release dogs.22.Pull out further to Top packer at 12850ft. Circ hole to Brine 0.45psi/ft. Observe well for

30mins. If no flow proceed to item 16. If there is flow, report to base immediately( Ilesanmi ).

Note: Brine wt increase may be advised.

23.POOH setting tool assembly and L/D drill pipe.


1. RU Schlumberger

2. Rig up shooting Nipple and install WL BOPs. Test WL BOPs to 1000psi

3. RIH12ft x 4-1/2 OD gun assembly( HSD, power jet 4512, 12 spf, 135/45deg

phasing, deep penetrating charges) and perforate E6.0. at 1081810830ft.

Note: Fill up well bore with brine and check for losses/gain. Report to base if either occursPOH gun.

4. RIH 6ftx 7 OD gun assembly ( HSD, power jet 4512, 12 spf, 135/45deg phasing,deep penetrating charges and perforate D3.0 sand at 9476 - 9482ft.

Note: Fill up well bore with brine and check for losses/gain. Report to base if either occurs

5.POH gun.


8/21

8

CONTINUE WITH RUNNING completion long string till end of program as inamendment 3

ADDENDUM No. 3 AMENDMENT 3 TO OGBELLE1 COMPLETION PROGRAM

1.0 BACKGROUND:It is desired to investigate the anomaly observed on the recently concluded D3.0 reservoir RSTlog, before completing Ogbelle-1 as a TSM. The most technically and commercially viablemethod has been considered to be a quick production test on the reservoir.

2.0 Well bore condition:1. The well bore is stable, brine wt of 0.48 psi/ft.2. G3.0 sand perforated and exposed.3. G1.0 has been straddled behind blank pipe.

3.0 ProgramAfter pulling out of hole the Baker and TAM setting tools, if Schlm. is already at well site,proceed with item 1 otherwise report to base for further instructions:

1. RU schlm. and shooting Nipple.2. Perforate E6.0 sand at 1081810830ft .3. Perforate D3.0 at 94769482ft. RD Schlm.4. RIH 7 Retrievable packer assy + Storm Choke and 1500ft of 3-1/2 drill pipe tail.5. Set packer at 10,200ft to isolate bottoms perforations.6. POH Storm choke setting tool.7. MU 9-5/8 Retrievable packer + 30 x 3-1/2 ft tail to tail at 9450ft.8.

Displace string to Diesel and create 682-psi draw down.9. Open up well to choke manifold. Record well pressures immediately to Base. Observe

well for flow.NOTE :1. Report well rate every hour to base.

2. Production test may be terminated immediately.Further instructions will depend on production test.

ADDENDUM 4 TOAMENDMENT No. 3 TO NDPR-1 (OTARI) COMPLETION PROGRAM

1.0 RUNING COMPLETION STRINGS

1.1 RUNNING OF 3-1/2 LONG STRING COMPLETION

NOTE:

Ensure that tubing Rubber protector is used.

Ensure that the trip tank is used at all times

Ensure that all safety precautions are taken and adhered to while RIH and strappingControl Line.

Ensure that all completion tubular are drifted/washed on the rack before PU and RIH.They should be further drifted while PU as well.


9/21

9

NOTE: Prepare rig floor & R/U 3-1/2Completion running gear for tail pipe assy. Ensure thatappropriate crossover subs from 3-1/2 tubing to Kelly cock are available on the rig floor andproperly made up. Hold pre job/tool box meeting prior to commencing RIH.

M/U and RIH completion sub assemblies as follows:

Assy No. 1 3 Half Mule Shoe sub assy3 HCS Pup JointOtis XN Nipple, 3 1/2 HCS3 1/2 HCS Pup Joint

Assy No. 2 3 1/2 HCS Pup JointBaker G-Locator sub + E- Seals, Size 80-40 with 3 1/2 HCS3 1/2 HCS Pup Joint

Appropriate length of 3-1/2 HCS Tubing

Assy No. 3 3 HCS Pup JointBlast joint x 40 ft.


Assy No. 4 3 1/2 HCS Pup Joint3 1/2 Otis XA Sliding Sleeve3 1/2 HCS Pup Joint


Assy No. 5 3 1/2 HCS Pup Joint3 1/2 Otis 7 Baker HS Packer3 1/2 HCS Pup Joint


Assy No. 6 3 HCS Pup JointBlast joint x 20 ft.

Appropriate length of 3 HCS Tubing

Assy No. 7 3 1/2 HCS Pup Joint3 1/2 Otis XA Sliding Sleeve3 1/2 HCS Pup Joint


Assy No. 8 3 1/2 HCS Pup JointGT Double Grip packer 9 5/8 Long string


10/21

10

3 1/2 HCS pupjoint

Assy No. 9 3 1/2 HCS tubing x 30 ft long3 1/2 Otis XA Sliding Sleeve3 1/2 HCS Pup Joints

Assy No.10 XN Nipple 3 1/2HCS3 HCS Pup joint x 10 ft made up below the short

string3 Perforated production tube

(Modified)

RIH completions string slowly to top of Liner, before entering the liner recordUP/DOWNweights. Slowly pass the tail pipe and HS packer into the liner.

Note:

Maintain safe speed to avoid packer setting prematurely.

RIH to +/-10ft above FBGP-1 packer at +/- 12,850 ftah. Record up & down weight andreverse circulate twice string content with a maximum surface pressure of 500 psi.

Note;Do not exceed MSP of 500 psi to avoid setting the packer pre-maturely.

RIH slowly and stab 80-40 seals into FBGP-1 packer at 12850ft. Set down 10kips.Pick up the string to its neutral weight. Close annular BOP and test stabbing with500psi. If ok Pull up 2ft and recheck stabbing with 500psi. If OK. Pull up the long string10ft above FBG-1 pkr.

RU the Flow head/Flow TEE, Slick line BOP, and lubricator and test to 3000psi.

RIH with a 2.75 Gauge Cutter (GC) to drift the tubing to XN-Nipple at +-12,860ft,and lay down. Rig down slick line equipment.

POH in stands as per space out plan up to the TRSCSSSV position and set slips.

Note:1. Ensure clean return is observed.

2.

When spacing out, the TRSCSSV should be positioned at approximately 120 ft belowthe THS. The length of the control line reel should also be considered when spacingout so as to ensure that the control line would get to the rig floor after final stringlanding.

Make up the dummy tubing hanger (without seals) and landing joint on the long string,and slowly land the hanger in the THS. Remove the landing joint. Clean, grease andinstall 3 NRV in the hanger.Note:

The tubing length pulled out, the GT Dual Grip packer depth, and thecorrect length of space out pups required.

Ensure that the tubing hanger seals are removed during this first run toavoid being damaged.


11/21

11

1.2 RUNNING OF 2 3/8 SHORT STRING COMPLETION

Make up Snap Latch with 80-37 seal assembly and run in hole with the short string to+/- 200ft above the MOD GT packer.

Circulate bottoms up.

Install the tubing hanger and hang off the short string. Clean, grease and install 3NRV in the hanger.

Note:

Ensure x/over is available to properly land tubing hanger.

Ensure that the short string tubing hanger seals are removed during this firstrun to avoid being damaged.

Ensure also the 3 IF box x 3 HCS pin to the Kelly cock.

1.3 LANDING LONG STRING

Retrieve the 3 NRV from the LS.

Install landing joint on the LS hanger, and pull the hanger 2 ft above the rig floor, andSet slips.

Remove the tubing hanger from the LS.

Pull back the string up to the TRSCSSV installation position.

Pick up and MU TRSCSSSV sub-assembly to the string as per space out plan.

Assy No. 11 Pup jointBaker TE-5 TRSCSSSV, 3 1/2 x 2.81 IDPup joint

Note:

Flush the control line and connect to the TRSCSSV. Test the control line against theTRSCSSV valve to 5,000 psi for 15 mins. Bleed down pressure to 3000psi.

Strap the control line at three places on each tubing joint, with bandit clamps andbuckle (one each close to the tubing collar and one at the middle of the tubing.

Note:1. Ensure that the clamps are tight so as to avoid control line slack.2. Ensure that the control line pressure is monitored through a gauge while strapping andRIH.

MU Tubing Hanger assembly to the string. Install seals. MU landing joint unto thehanger.

Assy No. 12 3 HCS Pin x Pin11 x 3 Split Hanger


12/21

12

Bleed off pressure from control line. Connect 1/4" NPT x 1/4 swage lock with controlline extension on the top side of the hanger and flush the hanger control line ports, topto bottom.

Connect the control line to the 1/4" NPT port underside of the hanger. Pressure up to5000psi for 15mins from the top of the hanger to test the connection for leaks.

Note:1. Record UP and DOWN weight.2. Position slips carefully to avoid crushing control line

Slowly lower the string and land split hanger in THS. Continue to monitor theControl line pressure while landing the hanger in the THS.

1.4 SPACING OUT SHORT STRING

Remove 3 NRV from SS hanger. Engage short string with landing joint and pullTubing hanger to rig floor. Remove tubing hanger.

RIH Anchor Latch seal assy and Stab into GT packer at +/-9,400ft with 11kips, (markpipe at rotary table for space out). Pull 5kips to confirm anchorage. Slack off toneutral wt .

Rotate string ( +/-4 at 9800ft) right hand turn at neutral point. Pick up slowly toretrieve seal assy from GT packer.

Note: Extreme care needs to be taken to avoid backing off the string.

Pull up to TRSCSSV installation position (+/- 90 below rotary table). Install TRSCSSVassembly

Flush control line and connect to SCSSSV. Test control line to 5000 psi against valve.Bleed down pressure to 3000 psi. Strap control line with bandit clamps in three placeson the tubing, close to each end and one in the middle. (Maintain 3000 psi on controlat all times) Run the tubing in the hole slowly.

Note:Continue monitoring C/L pressure on L/S.

Make up SS tubing hanger and bleed off pressure on the control line. Flush controlline port on hanger. Connect nipple with control line extension on top of hanger.Connect control line at the bottom of hanger. Pressure up control line to 5000 psi andcheck for leaks, if ok, bleed off pressure to 3000 psi and maintain this pressure oncontrol line.

Make up landing joint on the hanger. Lower the string slowly and land short string in

the THS.


13/21

13

Note:

The BOP and Riser stack should be drained before landing hanger

The Tie-down bolts should be fully retracted after draining the BOP stack, and the boreof the THS should be flushed with water to get rid of any debris that may be lodgedaround the THS bore.

Remove the master bushing to allow passage of the Tubing Hanger through the RotaryTable.

Ensure that the landing joint make-up torque is half the recommended torque for thetubing (easy back-off).

1.5 SHORT STRING TEST:

RU Flow head/Flow TEE and Slick line BOP and lubricator on the S/S, and pressuretest the assembly to 3000 psi. .

Note:Pump open the TRSCSSV and keep in open position on the hand pump through out theduration of the slick line operation.

RIH on the S/S with a 1.85 GC to the 2 -3/8 XN-Nipple position at +/-9460ft, POHGC.

Install 1.85 QTT in XN nipple @ +/-9,022ft and slack off wire. Fill string andlubricator and pressure up tubing in stages of 500 psi. to 3000 psi for 15 minutes.Check annulus for returns, if OK, take some tension on the wire and bleed offpressure slowly to zero. Retrieve QTT to surface.

Note:

Ensure C/line is monitored during the test at the hand pump(which shouldbe locked close).

Before pressurizing, fill up annulus.

Ensure the THS outlet valves are open before pressure testing.

Rig down slick line equipment.

Back off landingjoint and install 3 NRV in S/S tubing hanger.

Tighten the Hanger Tie-down bolts evenly, and ensure bolts are fully located into thetubing hanger groove.

Inject plastic sticks to energise the hanger seal as required.

Test the Hanger Seals from below, by pressuring the annulus through the THS outletline to 500 psi for 15 mins. Bleed-off pressure to zero and then re-tighten the Tie-downbolts.

1.6 SLICK LINE OPERATIONS TO SET PACKERS & TEST LONG STRING

RU the Flow head/Flow-TEE, Slick line BOP, and lubricator and test to 3000psi.

Pump open the TRSCSSV.


14/21

14

Note:Pump open the TRSCSSV and keep in open position on the hand pump through out theduration of the slick line operation.

RIH 2.75 QTT and set in XN at +/-12860 ft.

Fill up the string and lubricator and pressure up gradually in stages of 500 psi to1500psi to set HS packer and GT packers. Pressure up further to 3000 psi for 15minutes to test string.

If ok, bleed off pressure to 0psi as the W/L picks up the QTT. POH QTT.

Check GT packer setting 500psi annulus. If OK.

Note:

Ensure the build up/bleed down are done gradually and recorded.

Ensure C/line is monitored during the test at the hand pump(which shouldbe locked close).

Before pressurizing, fill up annulus. Ensure the THS outlet valves are open before pressure testing.

RIH shifting tool and open XA sleeve at +/-9459ft.

POH shifting tool and RD Slickline.

Back off landing joint and install 3 NRV in the L/S tubing hanger.

2.0 WELLHEAD MAKE-UP AND TESTING

Note:

Ensure that no debris enters the control line or test port on the Xmas Tree by flushing

and plugging them off before PU and NU Xmas Tree. Mark the control line and the test port before PU and MU the Xmas Tree.

Nipple down BOP

Clean the top of the Tubing Hanger, and the THS flange guard and ring gasket. Installthe ring gasket on the THS gasket groove. Install the seal sub & seal pad on theTubing Hanger neck. Flush the test port and the control line port on the Xmas tree.

Nipple up the Xmas Tree on the THS. Pressure test Xmas Tree gasket sealing throughthe test port to 5,000psi for 15 mins. Bleed off.

Retrieve both NRVs from the strings and install TWCVs in both string hangers.Pressure test the Tree and flow line valves against the TWCV and 11" x 5K flangedconnection to 5,000psi for 10 mins. Bleed off pressure to zero and retrieve the TWCVfrom both strings.

3.0 DISPLACING STRINGS TO DIESEL

Displace both strings to Diesel oil Long string in S/S out.

Rig up W/L. on L/S. RIH shifting tool and close SSD at +/-9459ft.

Apply 500 psi on SS and check sleeve closed. If OK, RD W/L Record Well head pressures


15/21

15

4.0 SECURING AND WELL HANDOVER

. Install NRV in hangers

Close all wellhead valves and remove hand wheels. Install name plate indicating L/Sand S/S strings (API) Standard.

SUSPEND WELL FOR RIG MOVE.


16/21


17/21

17

PLAN ACTIVITY TIME CHART FOR TSD COMPLETION.

Operation PlannedHrs

Mobilization

Accept Rig from DWC

Cleanout 9.5/8" Casing

NU 13.5/8" BOP. Test same 12.00

Mix Gel/Water mud 4.00

M/U 8-1/2" bit and BHA. 2.00

Fishing Operations for lost Shackle 0.00

RIH and drill out cement plug at 1000ft 8.00

Casing Test and BOP Test 0.00

RIH and wash down to 9200ft 16.00

Pressure test casing to 2000 psi 1.00Casing Test Fails

Tag cement plug at 9280 ft and drill out to 9330ft 1.00

Drill out EZSV. 4.00

Drill and wash down to 9700 ft, tag and drill out EZSV 6.00

Unable to drill EZSV 36.00

Drill out junk and cement to 10093ft (TOL) 6.00

Circulate clean and POOH 10.00

RIH Reverse Circ JB and 9.5/8" scraper to TOL 10.00

POOH 8.00M/U RTTS and RIH to 9250 ft. 9.00

Displace DP to diesel 2.00

Set Pkr. Inflow test below pkr 4.00

Inflow Test fails

POOH 8.00

Cleanout 7" Liner

Make up 6" bit & BHA and RIH to TOL. 15.00

Drill out cement and run into liner 2.00

Tag cement at 10600ft and drill out 4.00

Drill EZSV at 10777ft 6.00Clean out and push junk to 11,850 ft 3.00

Cleanout 7" Liner to 13290 ft

Circulate clean and POOH 13.00

Evaluate and prepare hole

Rig up electric wireline and run RST log 24.00

Make up 7" and 9.5/8" scraper assembly and RIH 11.00

Circulate and work scrapers. 2.00

Pump clean up sweeps and displace to filtered inhibited brine 6.00

Circulate until NTU


18/21

18

Perforate

M/U TCP guns to perforate D3 zone 9480 - 9490 4.00

RIH on 3-1/2" HCS tubing 21.00

Correlate with wireline 4.00

Set pkr and fire guns 2.00Reverse out and kill well. Circulate well in balance 6.00

POOH and lay down spent guns 10.00

M/U TCP guns to perforate E6 zone 10820 - 10843 4.00

RIH on 3-1/2" HCS tubing 12.00

Correlate with wireline 4.00

Set pkr and fire guns 2.00

Reverse out and kill well. Circulate well in balance 8.00

POOH and lay down spent guns 9.00

R/U wireline and RIH DAB pkr and set at 10788 6.00

POOH 3.00Complete

Rig up to run completion 4.00

Make up LS tailpipe, dual packer and SS tailpipe 6.00

RIH LS tubing to top of DAB packer 12.00

Tag pkr, mark for space out and POOH to SSSV depth 2.00

PU L/S and install TRSSSV, control line, space out and land 4.00

RIH L/S and stab into pkr. Test ann to 500 psi 2.00

Pressure up on tubing to set pakr. Test tbg and trip Hydrotrip 1.00

Install NRV in hanger of LS. 1.00M/U SS latch and sub assemblies 2.00

RIH picking up 2-3/8" tubing 19.00

PU S/S. Reverse out debris and stab into pkr. Pull back and installTRSSSV sub assbly and c/l. Space out and land

4.00

P test S/S and trip hydrotrip sub 1.00

Install Hgr and NRV 1.00

ND BOP 4.00

NU and test tree 8.00

RU slickline and open sleeve at 9460 ft on LS 8.00

Displace both strings to diesel 6.00Close sliding sleeve 4.00

Rig Down 4.00

18.63

Baseline Operational Times

Assume 8% NPT for the rig 20.12


19/21

19

3.0. DETAIL EXECUTION REPORT

ACTUAL STATUS DIAGRAM/COST

ALL 06/04/80

June05

S/L X-OVER 3-1/2HCS (P x P)

S X-OVER, 3 HCSb X 2 3/8 HCSp90 S 2 3/8 EUE 8rd bxpTE-5 TRSCSSSV w/X Profile

120 L 3 HCS bxp TE-5 TRSCSSSV

S 1.99 2.37 XN NIPPLE 2 3/8HCS

S 1.99 2.37 PERFORATED PUP JT. 2 3/8HCS

10300 L 5.91 2.92 BAKER MOD 7 HS PACKER SIZE 591-292

12876 4.00 5.00 BLANK PIPE W/ 4 11.6# BTCb X p

11x 13-5/8 5000 x 3000

9392 S 3.75 2.99 J LOCK ANCHOR LATCH SEAL NIPPLE 3 1/2NV p

9400 8.63 2.99 9 5/8 GT DOUBLE GRIP PACKER

WP (PSI)

WELL: NDPR - 01

13237 L 1.81 2.75 OTIS XN NIPPLE 2-7/8HCS

DESCRIPTION

STATUS :-

SAND PERFORATIONS DEPTH (FT)

CASING WELLHEADSIZE GRADE WT. DEPTH (ft) CEMENT G

TUBING DEVIATIONSTRING SIZE WT GRADE TYPE

ITEM TYPE SIZE (INS)

HOLE OPEN HOLE PLUGS DATE

PROPOSED INITIAL COMPLETION D IAGRAM

MAX.SG RESERVOIRACTIVITY

AUTHOR: CONSULTANT ENGR DATE:03 / 08 / 05TD = 13920 FTPREPARED BY:ALAKE, O.A

STATUS

GATE VALVE

XMAS TREE

ADAPTER FLANGETUBING HANGER

TUBING SPOOL

COOPER

DFE 40.00 FT

ORDF-TCHH XXXFT

ORDF-TOP XMT XXX FT

DRILLEDIC

SEAL BUSHING

CSG. H. SPOOL

CSG. H. HOUSING

LOGS

RISER

T CONNECTION

BACK PR. VALVE

5000

Zero deg

DSB

N/ADCB

DCBN/A

WF

X

L/S 3-1/2 9.3 N80 HCS

+ 2-3/8 4.7 N-80 HCS

11x 3-1/8x 3-1/8

11x 3-1/2HCS x3-1/2 5000 W/CLP

30 STOVE PIPE 24 DRIVEN13 3/8 X-55 55 5529 CEMENTED

9-5/8 N80 BTC 47 10250 CEMENTED7 N80 SLX 29 13650 CEMENTED

S/S 2-3/8 4.7 N-80 HCS/EUE

13-3/8 x 13-5/8 3000 X 5000

11 X 13-5/8

3 x 3 5000

E6.0 10818 10830 FT

(12 FT PERF.)

12856 4.77 5.50 MILLOUT EXTENSION 5 STC(P x P)

10804-10844 L 2.92 3.99 BLAST JOINT 40 FT LONG 3 1/2 HCS

G3.0 13256 13266 FT

&13274 13284 FT

12875 X-OVER SUBS: 5 LTC(B) x 4 BTC(P)

13219 3.25 5.875 MODEL D PACKER, SIZE 84-32

9-5/8 CASING SHOE

@ 10250 FT-AH

9469-9489

13 3/8 CASING@ 5529ft

30STOVE PIPE

@ 24 ft

13280 TOP OF PLUG

12853 BAKER MOD FBGP PKR, SIZE 85-40 W/ 5 STC b

STR ID OD

5.252.81

2.99

1.87

1 .9 9 3 .1 0

3.875 5.80

4.00 5.875

9427

9424

3.99

2.75

7 LINER SHOE @ 13650ftah

G1.0 SEQUEZEED OFF 12921 4.00 5.00 BLANK PIPE W/ 4 11.6# BTCb X p12916 3.93 5.13 PORTED COLLAR W/ 4 BTCb X b

TOP LINER 10093FT

20 CONDUCTOR

@ 505 ft

13242 L 1.99 3.10 2 3/8 RATCHETING MULE SHOE

13217 L 2.44 3.25 80-32 SEAL ASSY. W/8 SEAL UNITS

13216 L 2.44 4.70 G-LOCATOR SIZE 80-32, 2 7/8 EUE b X p

D3.0 9476 9482 FT(6 FT PERF.)

12853 L 2.92 4.00 G-LOCATOR, 3 1/2 HCS b X p

12864 L 2.92 3.99 OTIS XN NIPPLE 3 1/2 HCS12870 L 2.92 3.99 MULE SHOE, 3 HCS

12857 L 2.92 4.00 BAKER 80-40 SEAL ASSY

10790 L 4.25 2.81 MOD. L SLIDING SLEEVE DOOR 3 1/2 HCS

9459 L 4.25 2.81 MOD. L SLIDING SLEEVE DOOR 3 1/2 HCS

MULE SHOE, HCS BOX UpS

9414

L 2.92 3.99 BLAST JOINT 20 FT LONG 3 1/2 HCS

1.99 3.99

PLANNED/ACTUAL TIME CHARTAttached as appendix 2


20/21

20

PLANNED /ACTUAL SUMMARY SHEET

Activity Plannedtime

Actual time Remarks

Clean out

95/8 casing

4.38 days 33.88days NPT 12.25 days (Unplanned events; Inspect DCB)

Cleanout 7liner

1.79 days 12.46 days NPT 2.02days (Unplanned events; changed TDfrom 11850ft to 13290ft, well control situation

Evaluateand Preparehole

2.88 days 5.48 days NPT 2.75 days (Unplanned RST runs, Testing BOPunplanned)

Perforations 3.96 days 7.81 days NPT 1.375 days (unplanned Isolation of G1 sand,production testing of the D3 sand )

Completions

NB:Details of NPT are attached in Appendix 3


21/21

5.0. ANALYSIS OF DIFFERENTIAL TIME.

6.0.BUDGET

-

PLANNED/VALUE OF WORK DONE.

7.0.CONCLUSION

8.0.RECOMMENDATION

Documents

End of Well Report