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International Journal of Scientific & Engineering Research, Volume 8, Issue 3, March-2017 286 ISSN 2229-5518 IJSER © 2017 http://www.ijser.org QuantitativeWell-log Analysis and PetrophysicalEvaluation at Port Fouad Field, Offshore, Nile Delta, Egypt. Tharwat H.Abd El-Hafeez, Ahmed S.Salahand Mohamed S.Mahrous ABSTRACT: The Nile Delta basin is one of the most important gas producing provinces in Egypt and contains a thick sequence of potential hydrocarbon source rocks that generate essentially gas and condensate. Port Fouadfieldlocated in the eastern offshore area of the Nile Delta of Egypt, between long. 31o 84', 32o 44' E, and lat. 31o 52', 31o30' N approximately, 35 km NE of Port Said City, It measures about 13.85 in width and 10.40 km in length and a total area of 144 km2. Port FouadField is a big gas field discovered in 1992 by the International Egyptian Oil Company (IEOC). The present study deals with the evaluation of subsurfacegeology and hydrocarbon potentialities of the Miocene Wakar Formation, based on surface borehole geological, quantitative well-log analysis that was encountered inSixexploratory and development wells, These wells weredistributed in the Port Fouad Marin Field in the eastern partof the offshore Nile Delta area Egypt, The target obtained in the present study is Wakarformation and especially Sand Level 1 zone the most productive one. Six wells have been selected from Port Fouad field containing complete set of logs (gamma-ray, resistivity, neutron and density) and core analysis reports obtained for one well in the study area. A comprehensive analytical formation evaluation program has been applied on the available well logs utilizing the IPpetrophysics software to evaluate the petrophysical parameters and to construct lithosaturation plots and isoparametric contour maps. —————————— —————————— INTRODUCTION IJSER

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Page 1: QuantitativeWell-log Analysis and … · QuantitativeWell-log Analysis and PetrophysicalEvaluation at Port Fouad Field, Offshore, Nile Delta, Egypt. ... wireline data for some conventional/advanced

International Journal of Scientific & Engineering Research, Volume 8, Issue 3, March-2017 286 ISSN 2229-5518

IJSER © 2017 http://www.ijser.org

QuantitativeWell-log Analysis and PetrophysicalEvaluation at Port

Fouad Field, Offshore, Nile Delta, Egypt.

Tharwat H.Abd El-Hafeez, Ahmed S.Salahand Mohamed S.Mahrous

ABSTRACT: The Nile Delta basin is one of the most important gas producing provinces in Egypt and contains a thick sequence of potential hydrocarbon source rocks that generate essentially gas and condensate.

Port Fouadfieldlocated in the eastern offshore area of the Nile Delta of Egypt, between long. 31o 84', 32o 44' E, and lat. 31o 52', 31o30' N approximately, 35 km NE of Port Said City, It measures about 13.85 in width and 10.40 km in length and a total area of 144 km2. Port FouadField is a big gas field discovered in 1992 by the International Egyptian Oil Company (IEOC).

The present study deals with the evaluation of subsurfacegeology and hydrocarbon potentialities of the Miocene Wakar Formation, based on surface borehole geological, quantitative well-log analysis that was encountered inSixexploratory and development wells, These wells weredistributed in the Port Fouad Marin Field in the eastern partof the offshore Nile Delta area Egypt, The target obtained in the present study is Wakarformation and especially Sand Level 1 zone the most productive one.

Six wells have been selected from Port Fouad field containing complete set of logs (gamma-ray, resistivity, neutron and density) and core analysis reports obtained for one well in the study area.

A comprehensive analytical formation evaluation program has been applied on the available well logs utilizing the IPpetrophysics software to evaluate the petrophysical parameters and to construct lithosaturation plots and isoparametric contour maps.

—————————— ——————————

INTRODUCTION

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The Nile Delta basin is one of the most important gas

producing provinces in Egypt and contains a thick sequence of

potential hydrocarbon source rocks that generate essentially

gas and condensate.

The total area of Nile Delta is 26,450 Km2 of which 19, 200

Km2 inland and 7,250 Km2 offshore. The Nile Delta is locate

sedimentary build up began in the Miocene time with a very

thick section of Late Tertiary – Quaternary sediments indicating

a rapid and continuous deposition in a gradually subsiding

basin. This section consists mainly of shale with sandstone

intercalations.

Since 1993, renewed exploration of the offshore, eastern Nile

Delta of Egypt has been dramatically successful.

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Significant new gas fields have been found in Pliocene and

Miocene sandstone reservoirs which have been tested with flow

rates of 25 to 36 million cubic feet per day, with 500 to 2000

barrels of condensate.( Philip D. and Martin L. AIbertin

1998Heppard).

In 1967 IEOC discovered the first gas field in the country, Abu

Madi, one of the largest in Egypt.

Over the years, other significant gas discoveries have been

made and put on production by eni: the onshore East Delta

and El Qar’, as well as the offshore Port Fouad, Darfeel,

Barboni, Anshuga, Baltim East, Baltim North, El Temsah, Tuna,

Denise and Denise South fields .

Thick sandstones in the Qantara, Sidi Salem, Wakar and Kafr

El Sheikh Formations have proved to be the most suitable

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reservoir units in the study area (EGPC, 1994). Seals are

provided by shales within the Sidi Salem and Wakar

Formations

The Nile Delta is generally known as a natural gas-prone

(essentiallymethane/gas condensate) region with production

fromMiocene and Pliocene fields.

Fig. 1: Geographic map shows the location of study area and the main gas fields

of the Nile Delta, among them are Port Fouad Marine and Wakar fields.

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Area of Study

The study area is located in the eastern offshore area of the

Nile Delta of Egypt, between long. 31o 84', 32o 44' E, and lat.

31o 52', 31o30' N approximately, 35 km NE of Port Said City,

It measures about 13.85 in width and 10.40 km in length and a

total area of 144 km2,Port FouadField is a big gas field

discovered in 1992 by the International Egyptian Oil Company

(IEOC).( Khaled K.A.,Attia G.M., Metwalli F.I. and Fagelnour

M.S2014).

It lies in Petrobel's offshore North Port Said block. With

reserves proven so far at 3 Trillion Cubic Feet (TCF) from

reservoirs lying at a depth of 4,000 meters.

Port Fouad field came on stream in April 1996 to initial

production 70 MCF/d of gas and 3,500 b/d of condensate.

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Wakar field lies also in the same block 17 km north of Port

Said city, proving reserves of 1.5 TCF. The pay zone is at a

depth of 4,000 meters. It began production in February 1997

from a platform similar to that used in Port Fouad, field with a

capacity of 42 MCF/d of gas and 2,740 b/d of condensate.

The present study deals with the evaluation of

subsurfacegeology and hydrocarbon potentialities of the

Miocene WakarFormation, based on surface borehole

geological and well logging data that were encountered

infiveexploratory and development wells. These wells

weredistributed in the Port Fouad Marin Field in the eastern

partof the offshore Nile Delta area (Fig 2).

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Fig.2: Study Area and Location map of the Studied Wells, port fouadmarine field,

Nile Delta, Egypt,afterPetrobel.

Materials and Methodology

Reservoir Evaluation to evaluate the hydrocarbon potentialities

of the studied interval on the light of the petrophysical and

lithological parameters achieved for each well individually.

Both petrophysical parameters evaluation and reserve

estimation for the study area calculated by using the available

wireline data for some conventional/advanced logging tools .

The well-logging data comprise resistivity, sonic, neutron,

density, nuclear magnetic resonance, spontaneous potential,

caliper, and gamma ray and natural gamma ray spectrometry

logs, where the geological data are represented by composite

logs

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A CPI was accomplished through two different software

techniques IP (Interactive Petrophysics) of senergy and

Techlog of Schlumberger,todetermin the main petrophysical

parameters (Vsh, PHI, Sw and Sg), net reservoir and net pay

and to construct lithosaturation plots CPI and isoparametric

contour maps.

Resistivity method and Pickett plots were used to estimate

Formation water resistivity (Rw) in each reservoir.

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SUBSURFACE GEOLOGICAL SETTING

The Nile Delta is one of the most important gas-producing

provinces in Egypt. The geologAical framework and structural

evolution of the Delta have been the subject of considerable

research (see for example Said,1990; Kamelet al., 1998).

Stratigraphy

The lithostratigraphy of the Nile Delta has been studied by

many geologists of which one may mention: (Said, 1962 and

1982); (Barakat, 1987); (Sarhan, Barsoum and Bertello,

1996); (Nashaat, 1990, 1992, and 2000).

The generalized stratigraphic sequence show in fig.3

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Fig: 3Mediterranean offshore concession, aftetPetrobel

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Structural Framework .

The Nile delta sub divided into two sub provinces by a faulted

hinge line oriented WNW to ESW allocated at Kafr El Sheikh

Latitude city. This hinge line is known as the faulted flexure that

is separates the south delta province from the north delta plain

basin. The southern delta province the subsurface structure is

complicated by the interaction between tectonic elements of

different ages and with different orientation on these structures

is superimposed. These are The E-NE and NE trending folds

of Late Cretaceous to Eocene age (the Syrian arc folds). The

Oligocene to Early Miocene NW-SE trending faults which were

associated with a major up lift in the south coupled with basaltic

extrusion. The Late Miocene and Pliocene delta subsidence was mainly

concentrated along the axis of the Nile valley

The Western margin of delta province

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The western margin of the Nile Delta is marked by high nature,

forms a ridge of Aptian carbonates, and seen at about 1.2

seconds on the seismic sections, The Natrun high block with

basement at a depth of 12,000 feet, may have been a positive

feature since the Paleozoic( Abdel Azim,2004).

The Northern slop province and faulted fexture:

In the intermediate "Slope" province over and north of the

faulted flexure, rotated faulted blocks represent gravity-induced

displacements on curved normal fault surfaces dipping sea

ward(Fig. 4).The block separated by relatively planner faults in

the zone of interest are four to eight kilometres wide and dip 3

to 8 to the south. Major displacement occurred in the Middle

Miocene time, since the block are truncated by the

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SeravallianTortonian unconformity and overlying younger strata

are broken only rarely by the faults.

The Eastern Margin of the Delta Province

Along the eastern part of the intermediate “Slope " belt

between

Mansoura and the Suez canal, linear fault blocks from a series

of E-W peripheral ridges created from the Middle-Upper

Miocene uplift ofOligocene Lower Miocene fault blocks that are

terminated towards the north by major E-W faults. These

Structure were later inverted.

The South Delta province

Structure in the south delta providence affect essentially an

Eocene to Triassic succession similar to that of the West

Desert and North Sinai cross the southern part of the Nile

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Delta, in apparent continuity with a zone of liner uplifts SE of

Khatatba. The north boundary of the area is marked by the

faulted flexure where a rapid northward increase in slop of the

Pre-Oligocene takes.In the south delta province, there is a

contrast between structure in the southeastern part from Abu

Sultan to Abu Roash-Khatatba, which have SW-NE and W-SW

to E-NE trends. The north western and center delta regions,

have a deep structure trending to E-W, W-SW and E-NE

trend. Both types of structure were uplifted essential in the Late

Cretaceous to Eocene and suffered considerable erosion.

The Nile Delta Core

On and under continental slop the surface sediments are

affected by extensive superficial faulting, large scale slumping

and diapiric phenomena. The north eastern margin of th Nile

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Delta and the south western margin of the Nile Delta cone is

marked by the Bardawil escarpment which delineates a major

W-NW to E-SE fault zone comprise of several seep N-NW to

SE fault Zone comprise of several steep N-NE facing fractures

and the S-SW ward tilting of sediments. Salt walls parallel the

faults.

Fig. 4 Regional structural setting, north Nile Delta [12,5].

Khaled K.A., Attia G.M., Metwalli F.I. and Fagelnour M.S.2014

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Tectonic Setting

Tectonics has played a dominant role in the location and inthe

structural and depositional history of the Nile delta. The

regionoccupies a key position in the context of the plate-

tectonicevaluation of the eastern Mediterranean and the Red

Sea. It lies onthe moderately deferent external margin of the

African plate (the Unstable Shelf of Said, 1962) which extends

well north of the

Mediterranean coast.

The geological development of the Nile Delta and itssubmarine

extension, the Nile cone is a recent phenomenon

whencompared with other major deltas, such as the Niger

andMississippi. The Nile Delta can be subdivided into the

followingstructural sedimentary provinces (Fig. 5).

(A) The South Delta province, a continuation of Western

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Desert stratigraphic sequences and structure.

(B) The North Delta basin.

(C) The Nile cone.

(D) The Levant platform.

The basal rocks underlying the Neogene Nile Delta are the

folded platform carbonates of the Mesozoic to Lower

Eocene.Their location under the offshore Nile Delta and the

majorstructural trends are presently unknown because they lie

beyondboth the usual recording time of commercial seismic

data and thepenetration of the deepest wells drilled.

The tectonic development and the deformation patterns in

theNile Delta are complicated by the interaction of diversely

orientedstructural features, which are the result of the following

stages oftectonic deformation:

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(A) The differential vertical movement of E – W oriented

horstblocks and grabensa long the passive margin of theAfrican

plate as well as the overall subsidence of the Tethya basin

versus the up lift of the Afro-Arabian margin.

(B) The arching of the Red Sea region followed by NE–SWand

NNE– SSW rifting and sea floor spreading as theWestern

Desert basement structure map show a NW-S right, lateral

shear movement of regional extent, whichtogether with the

NNW to SSE faults, displace the NE-SWoriented Syrian Arc

structures.

(C) Sediment loading at the expanding Plio-Pleistocene

deltafront resulted in the formation of growth faults, shelfmargin

slumping and normal faulting.

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The northeast margin of the Nile Delta continental shelf

isintensely down faulted with SW tilted blocks and a major

WNWto ESE diaperic salt ridge forming the Bardawil fault zone.

Thisfeature belongs to original NW-SE fault system with

dextralstrike-slip component formed in the Late Miocene, which

waslater rejuvenated in the Pleistocene

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Fig.5: Major Structural Features in the Nile Delta (Sahran and Hemdan,

1994).

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WELL LOG INTERPRETATION &PETROPHYSICAL EVALUATION

Vertical variation of petrophysical parameters was constructed

for the studied wells in the area under investigation using IP

(Interactive Petrophysics) program.

Litho-Saturation Cross plots

In order to illustrate the vertical distribution of hydrocarbon

saturation through petrophysical parameters, a number of litho-

saturation crossplots were constructed. These plots exhibit a

number of continuous logs showing the variations inherited in

rocks materials and parameters against depth.

Figure 6 To 11 represents the combined litho-saturation cross-

plot of Study wells (Wakar Fm. Sand Level-1),Wakar

Formation characterized by the predominance of shale and

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sandstone layers.The main target of this study is Sand Level -

1, other Sand levels were dry in the study wells.

Litho-Saturation Cross-Plot of PFMS-1 Well

Figure 6. represent the combined litho-saturation cross plot for

PFMS-1 Well (Wakar Fm. Sand Level-1).

the net sand of Wakar Fm. Sand Level-1 is 0.6 meters, the

shale content is about 14%, the effective porosity is 30.5%,

and the hydrocarbon saturation is about 55.7 %.

Litho-Saturation Cross-Plot of PFM-3Well

Figure 7. represent the combined litho-saturation cross plot for

PFM-3 Well (Wakar Fm. Sand Level-1).

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the net sand of Wakar Fm. Sand Level-1 is 1.52 meters, the

shale content is about 4%, the effective porosity is 24.3%, and

the hydrocarbon saturation is about 61.5 %.

Litho-Saturation Cross-Plot of PFM-SE-1 Well

Figure 8.represent the combined litho-saturation cross plot for

PFM-3 Well (Wakar Fm. Sand Level-1).

the net sand of Wakar Fm. Sand Level-1 is 5.5 meters, the

shale content is about 6%, the effective porosity is 29.4%, and

the hydrocarbon saturation is about 77.1 %.

Litho-Saturation Cross-Plot of PFM-SW-5 Well

Figure 9 represent the combined litho-saturation cross plot

for PFM-SW-3 Well (Wakar Fm. Sand Level-1).

the net sand of Wakar Fm. Sand Level-1 is 6.23 meters, the

shale content is about 5%, the effective porosity is 23.3%, and

the hydrocarbon saturation is about 68.8 %.

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Litho-Saturation Cross-Plot of PFM-11 Well

Figure 10 represent the combined litho-saturation cross plot

for PFM-11 Well (Wakar Fm. Sand Level-1).

the net sand of Wakar Fm. Sand Level-1 is 2.3 meters, the

shale content is about 1%, the effective porosity is 25.6%, and

the hydrocarbon saturation is about 59 %.

Litho-Saturation Cross-Plot of PFSE-5 Well

Figure 11 .represent the combined litho-saturation cross plot

for PFSE-5 Well (Wakar Fm. Sand Level-1).

the net sand of Wakar Fm. Sand Level-1 is 3.25 meters, the

shale content is about 13%, the effective porosity is 13.7%, and

the hydrocarbon saturation is about 5.7 %.

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PFMS-1Scale : 1 : 500DEPTH (3158.03M - 3218.99M) 13/12/2016 06:01DB : WELL_1 (1)

Depth

DEPTH(M)

Zone

PF

MS

-1_ZO

NA

TIO

N

GammaRay

R1:GR_EDTC (GAPI)0. 150.

Porosity

R1:APLC (V/V)0.45 0.15

R1:RHOZ (G/C3)1.95 2.95

Sand

Resistivity

R1:AE90 (OHMM)0.2 20000.

R1:AE10 (OHMM)0.2 20000.

Saturation

SW (Dec)1. 0.

Porosity

PHIT (Dec)0.5 0.

PHIE (Dec)0.5 0.

Lithology

VWCL (Dec)0. 1.

PHIE (Dec)1. 0.

VSILT (Dec)0. 1.

VCOAL (Dec)0. 1.

VSALT (Dec)0. 1.

KillFlag ()0. 1.

Clay

Porosity

Silt

SANDSTONE

Coal

Salt

No Analysis

3160

3165

3170

3175

3180

3185

3190

3195

3200

3205

3210

3215

SH

ALE

S

AN

D L

EV

EL

1

SAND LEVEL 1 SAND LEVEL 1 SAND LEVEL 1 SAND LEVEL 1 SAND LEVEL 1 SAND LEVEL 1

Fig. 6.Litho-SaturationCross-Plot of PFMS-1 Well

(Wakar Fm. Sand Level-1).

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JF 75-2 (PORT FOUAD MARINE-3)Scale : 1 : 240DEPTH (3037.03M - 3065.07M) 13/12/2016 05:59DB : WELL_1 (2)

Depth

DEPTH(M)

Zone

ZO

NA

TIO

N

GR

R1:GR (GAPI)0. 150.

Porosity

R1:RHOB (G/C3)1.95 2.95

R1:NPHI (dec)0.45 -0.15

Sand

Resistivity

R1:IDPH (OHMM)0.2 2000.

R1:MSFL (OHMM)0.2 2000.

SW

SW (Dec)1. 0.

Porosity

PHIT (Dec)0.5 0.

PHIE (Dec)0.5 0.

Lithology

VWCL (Dec)0. 1.

VSILT (Dec)0. 1.

PHIE (Dec)1. 0.

Clay

Silt

Sand

Porosity

AND LEVEL

3040

3045

3050

3055

3060

3065

SH

ALE

1S

AN

D L

EV

EL 1

AND LEVE SAND LEVEL 1 SAND LEVEL 1 SAND LEVEL 1 SAND LEVEL 1 SAND LEVEL 1 SAND LEVEL 1

Fig. 7Litho-SaturationCross-Plot of PFM-3 Well

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PFM-SE-1Scale : 1 : 240DEPTH (3126.13M - 3155.13M) 13/12/2016 06:05DB : WELL_1 (3)

Depth

DEPTH(M)

Zone

ZO

NA

TIO

N

GR

R1:GR (API)0. 150.

Porosity

R1:RHOB (gm/cc)1.95 2.95

R1:NPHI (dec)0.45 -0.15

Sand

Resistivity

R1:IDPH (ohm.m)0.2 200.

R1:IMPH (ohm.m)0.2 200.

SW

SW (Dec)1. 0.

Porosity

PHIT (Dec)0.5 0.

PHIE (Dec)0.5 0.

Lithology

VWCL (Dec)0. 1.

VSILT (Dec)0. 1.

PHIE (Dec)1. 0.

Clay

Silt

Sand

Porosity

AND LEVEL

3130

3135

3140

3145

3150

3155

SA

ND

LE

VE

L 1

SAND LEVEL 1 SAND LEVEL 1 SAND LEVEL 1 SAND LEVEL 1 SAND LEVEL 1 SAND LEVEL 1

(Wakar Fm. Sand Level-1).

Fig. 8Litho-SaturationCross-Plot of PFM-SE-1 Well

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PFSW-5Scale : 1 : 240DEPTH (3528.06M - 3560.06M) 13/12/2016 06:12DB : WELL_1 (5)

Depth

DEPTH(M)

Zone

ZO

NA

TIO

N

GR

R1:GR (GAPI)0. 150.

Porosity

R1:RHOZ (G/C3)1.95 2.95

R1:NPHI (V/V)0.45 -0.15

Sand

Resistivity

R1:RLA5 (OHMM)0.2 2000.

R1:RXOZ (OHMM)0.2 2000.

SW

SW (Dec)1. 0.

Porosity

PHIT (Dec)0.5 0.

PHIE (Dec)0.5 0.

Lithology

VWCL (Dec)0. 1.

VSILT (Dec)0. 1.

PHIE (Dec)1. 0.

Clay

Silt

Sand

Porosity

AND LEVEL 3530

3535

3540

3545

3550

3555

3560

SA

ND

LE

VE

L 1

AND LEVE SAND LEVEL 1 SAND LEVEL 1 SAND LEVEL 1 SAND LEVEL 1 SAND LEVEL 1 SAND LEVEL 1

(Wakar Fm. Sand Level-1).

Fig. 9Litho-SaturationCross-Plot of PFM-SW-5 Well

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PFM-11Scale : 1 : 100DEPTH (3717.M - 3726.M) 13/12/2016 06:15DB : WELL_1 (6)

Depth

DEPTH(M)

Zone

ZO

NA

TIO

N

GR

R1:GRMA (GAPI)0. 150.

Porosity

R1:ROBB (G/C3)1.95 2.95

R1:TNPH (dec)0.45 -0.15

Sand

Resistivity

R1:A40H (OHMM)0.2 2000.

R1:A16H (OHMM)0.2 2000.

SW

SW (Dec)1. 0.

Porosity

PHIT (Dec)0.5 0.

PHIE (Dec)0.5 0.

Lithology

R2:VCLAV (Dec)0. 1.

VSILT (Dec)0. 1.

PHIE (Dec)1. 0.

Clay

Silt

Sand

Porosity

AND LEVEL

3720

3725

SA

ND

LE

VE

L 1

AND LEVE SAND LEVEL 1 SAND LEVEL 1 SAND LEVEL 1 SAND LEVEL 1 SAND LEVEL 1 SAND LEVEL 1

(Wakar Fm. Sand Level-1).

Fig. 10Litho-SaturationCross-Plot of PFM-11 Well

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(Wakar Fm. Sand Level-1).

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PFSE5Scale : 1 : 200DEPTH (3436.M - 3464.M) 13/12/2016 06:21DB : WELL_1 (4)

Depth

DEPTH(M)

Zone

ZON

ATION

GammaRay

R2:GR (GAPI)0. 150.

Porosity

R2:TNPH (V/V)0.6 0.

R2:RHOZ (G/C3)1.7 2.7

R2:PEFZ (B/E)0. 20.

Sand

Resistivity

R1:A28H (OHMM)0.2 2000.

R1:A16H (OHMM)0.2 2000.

Saturation

SW (Dec)1. 0.

Porosity

PHIT (Dec)0.5 0.

PHIE (Dec)0.5 0.

BVWSXO (Dec)0.5 0.

Lithology

VWCL (Dec)0. 1.

PHIE (Dec)1. 0.

VSILT (Dec)0. 1.

Clay

Porosity

Silt

SANDSTONE

3440

3445

3450

3455

3460

SAN

D L

EVEL

1

SAND LEVEL 1 SAND LEVEL 1 SAND LEVEL 1 SAND LEVEL 1 SAND LEVEL 1 SAND LEVEL 1

Fig. 11.Litho-SaturationCross-Plot of PPSE-5 Well

(Wakar Fm. Sand Level-1).

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Lateral Variation of Petrophysical ParametersWakar Fm.

Sand Level-1

Four iso-parametric contour maps of Wakar Fm. Sand Level-1

were constructed to illustrate the lateral distribution of the

petrophysical parameters in the investigated area figure 12.

As illustrated in figure 12, Effective thickness of Wakar Fm.

Sand Level-1 increases in the Western and South Eastern part

of the study area, Shale volume increases in the South

Western part, Effective porosity and Hydrocarbon saturation

increases in the South Eastern part in the investigated area.

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Effective Thickness(m) Shale Volume (%)

Effective Porosity (%), Hydrocarbon Saturation (%).

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Fig.12 ,Distribution of Wakar Fm. Sand Level-1Petrophysical Parameter

SUMMARY , CONCLUSIONS AND RECOMMENDATION

The present study deals with the evaluation of subsurface

geology and hydrocarbon potentialities of the Miocene Wakar

Formation, based on surface borehole geological, quantitative

well-log analysis that was encountered in Six exploratory and

development wells (PFMS-1, PFM-03, PFSE-1, PFM-SE-05,

PFM-SW-05 and PFM-11).

These wells were distributed in the Port Fouad Marin Field in

the eastern part of the offshore Nile Delta area Egypt, The

target obtained in the present study is Wakar formation and

especially Sand Level 1 zone the most productive one.

As a result of evaluating reservoir rock in Port Fouad Field

through Computer Processed Interpretation (CPI), it can be

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concluded that the main reservoirs in the investigated area is

Wakar Formation Sand Level 1.

The net sand (Effective thickness) of Wakar Fm. Sand Level-1

ranges between 0.6 and 6.25 meters and increases in the

Western and South Eastern direction of the study area, Shale

volume ranges between 1 and 15% and increases in the South

Western direction, Effective porosity ranges between 13.7 and

30.5 and increases in the South Eastern direction, and the

hydrocarbon saturation varies between 5.7 and 77.1 % and

increases South Eastern direction in the investigated area.

Based on the output data in this study, it is highly

recommended to drill new wells in South east direction for the

following reasons: Increase in the net sand thickness of Wakar

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Formation, Decrease Shale volume in Side Sand Levels,

Increase in the Effective porosity and Hydrocarbon saturation

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REFERENCES

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lithostratigraphy of the Lower Cretaceous sequences in

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Egyptian General Petroleum Corporation, EGPC, 1994.Nile

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Khaled K.A.,Attia G.M., MetwalliF.andFagelnour M.S,2014.

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Subsurface Geology and Petroleum System in the Eastern

Offshore Area, Nile Delta, Egypt .Journal of Applied Science

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Philip D. Heppard and Martin L. AIbertin,1998.Abnormal

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Said, R., 1962. The Geology of Egypt NewYork, Elsevier,

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Said, R., 1990.The Geology of Egypt (2nd edition)

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Sarhan, M. and Hemdan, K., 1994.North Nile Delta structural

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Sarhan, M., Barsoum K., Bertello, F., Taalat, M. and Nabili,

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