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Shuram Oil & Gas Laboratory

• Geochemical Laboratory and Consultancy

• Core Operations and Sedimentology

• Conventional Core Analysis and Petrography

18th of January 2017

Shuram Laboratories and Technical Services

Geochemical Laboratory

and

Consultancy in collaboration

with Stratochem Services

Core Operations

and

Sedimentology

Conventional Core Analysis

and

Petrography

Laboratory / Analytical

TOC, Pyrolysis screening

Whole oil gas chromatography

Mud gas analysis

Consultancy & Training

Regional Prospectivity Studies

Geochemical Well Evaluations

Souring and H2S-related Studies


Core Handling and Management

Core Slabbing, Trimming, Plugging

Core Layout & Storage

Description & Interpretation

Sedimentological Studies

Sedimentological Core Description

Borehole Image Interpretation

Calibration of log data


Plug Cleaning

CCA/RCA Plug Measurements

Thin-section preparation

Description & Interpretation

Reservoir Quality Studies

Petrographic description

Diagenesis

Reservoir Quality evaluation

Standard: Id=FPC_54244 name=Thailand Sirikit ( Lan Krabu-1) omc 3043

0 1000 2000 3000 4000 5000

Seconds

3

28

53

78

103

128

153

178

203

mV

iC5

nC5

nC6

CH

3MH

MCH

nC8

nC9

nC10

nC11

nC12

iC13

iC14

nC13

iC15

nC14

iC16

nC15

nC16

iC18

nC17

pr

nC18

ph

nC19

nC20

nC21

nC22

nC23

nC24

nC25

nC26

nC27

nC28

nC29

nC30

nC31

nC32

nC33

nC34

nC35

nC36

nC37

nC38

nC39

nC40


Geochemical Analysis


TOC, TC, and Pyrolysis screening

Whole oil gas chromatography

Mud gas analysis

Full Geochemical analysis &

interpretation

Consultancy & Training


Geochemical Well Evaluations

Souring and H2S-related Studies

Tra

inin

g g

uid

eT

rite

rpane B

iom

ark

ers

Gas A

naly

sis

GC

in S

hura

m


Geochemistry Laboratory Services

Gas chromatography of Mud gas and Whole

oil samplesStandard: Id=FPC_54244 name=Thailand Sirikit ( Lan Krabu-1) omc 3043

0 1000 2000 3000 4000 5000

Seconds

3

28

53

78

103

128

153

178

203

mV

iC5

nC5

nC6

CH

3MH

MCH

nC8

nC9

nC10

nC11

nC12

iC13

iC14

nC13

iC15

nC14

iC16

nC15

nC16

iC18

nC17

pr

nC18

ph

nC19

nC20

nC21

nC22

nC23

nC24

nC25

nC26

nC27

nC28

nC29

nC30

nC31

nC32

nC33

nC34

nC35

nC36

nC37

nC38

nC39

nC40

Source Rock screening of

core and cuttings samples


Keynote presentation byPeter Nederlof and Andrew Murray

(Shuram Geological Consultancy)

GEOCHEMICAL SOURCE ROCK EVALUATION

SOURCE ROCKS OF THE MIDDLE EAST

ADIPEC Conference and Exhibition

November 2016

AAPG Workshop on Source Rock of the Middle East

January 2016

Consultancy and Training



Aspect of Petroleum Geology Block 34, Al Jazir, SE Oman

Mohamed Al-Balushi, M.Sc. Thesis 2003

Block 6: Two Potential Charge Domains?


Geochemical Well Evaluations (1)


Souring and H2S-related StudiesBB427101V : BAB-427Scale : 1 : 800

DEPTH (10800.FT - 11550.FT) 9/3/2006 15:15DB : IP Project - UAE Regional (210)

DEPTH

FTCORE:Core No

10. 0.

Orig:GR1 (GAPI)0. 80.

Orig:IMPH (OHMM)0.2 2000.

Orig:RT (OHMM)0.2 2000.

Orig:RHOB (G/C3)1.95 2.95

Orig:NPHI (CFCF)45. -15.

Orig:DT (US/F)140. 40.

Msol:PhiT (dec)0. 0.4

CORE:CPOR (%)0. 40.

Orig:SW (CFCF)100. 0.

Msol:VLime (dec)0. 1.

Msol:VDol (dec)0. 1.

Msol:VAndydrite (dec)0. 1.

Msol:PhiT (dec)1. 0.

HABSHAN

HITH

UPPER ARAB

LOWER ARAB

JUBAILA

HABSHAN

HITH

Arab - Salina/Sabkha

Arab -Tidal Flat/Lag

Arab - Barrier Shoal

Arab - Mid to Outer

JUBAILA pt

10900

11000

11100

11200

11300

11400

11500

Habshan

Jubaila

LithologyGR Res Den/Neu/Sonic Por SwDepthFormation Facies

Ou

ter

Ram

p

Limestone

Dolomite

Anhydrite

Porosity

ManifaGross

(ft)

Net

(ft)

NTG

(%)

POR

(%)

20% 5%735

39% 9%75208

11% 7%3289

60% 12%132312

47% 6%3668

0% 2%033

97% 10%120124

9% 5%19207

0% 2%0146

38% 9%70316

Min

Avg

Max

Well avg Min

Total Avg

Well avg Max

Min

Avg

Max

Min

Avg

Max

Based on a Por cutoff of 2%

Sali

na/S

ab

kh

a/

Lago

on

al

Up Arab

Sali

na

Sab

kh

a

Hith

Tidal Flat

Barr

ier

Sh

oal

(Oo

lite

)

Lr Arab

Mid

to

Ou

ter

Ram

p

Low

er

Ara

b:

23

–2

8 %

H2S

Up

pe

r A

rab

:5

–2

1 %

H2S

Sulfate (SO42-) + Hydrocarbons (CnH2n)

H2S + Carbonate (HCO 3-) + H2O


Core Operations and

Core Sedimentology


Core Handling and Display

• Core storage management

• Core handling and layout

• Core slabbing and resination of 1/3 slab

• Core Photography

• Plugging and Cleaning of plugsSoxhlet Extraction & Cleaning apparatus (Dean Stark Extraction Techniques)

• CCA data reporting

Core Slabbing

Plug Drill Press

Plug Cleaning

Vinci CCA Equipment


Sedimentological characterisation of carbonate reservoirs

Core Sedimentology - Technical Value

Core sedimentology aims to answer the key questions:

• What is depositional make-up within a studied reservoir?

• What is the depositional architecture within the reservoir?

• How heterogeneous is the reservoir?

For this purpose, Badley Ashton provides:

• Detailed graphic core descriptions

• Environmental interpretation

• Generation of depositional models/framework

• Sequence stratigraphic interpretation

• Borehole Image Interpretation

• Structural/Geomechanical fracture interpretation

• Controls on fracture distribution

• Calibration of logs with core observations

Examples of key sedimentological deliverables are presented in the next slides


Sequence Stratigraphic Correlations

Extend the depositional framework into the uncored intervals and correlation wells using sequence stratigraphic principles and calibrated log signatures

• Assess and further constrain lateral depositional variation using the entire available dataset (eg. wireline data, BHI, cuttings, SWC etc.)

• Provide guidance and uncertainties for static modelling


Integration of core, CT and BHI data - Clastic

Overall depositional context reconstructed using core, CT and BHI data.

0˚0˚ 180˚

m - dmmm - dm

CT Scan BHI Proximal Levée

Channel-Fill

Distal Levée

NORTH

BHI data allow the generation of robust models, even with a paucity or absence of core:

• Wherever it is possible BHI data are calibrated against the core

• Generated dip data complements core information and improves upon conventional log data by providing internal fabric information and accurate dip magnitudes and azimuths for palaeoflow and palaeoslope determinations



and petrographic analyses



• From cutting samples

Soft samples or samples coming directly from the drilling sites.

• From plug/rock fragments

- Blue epoxy resin impregnated thin-section(for both carbonate and clastic deposits)

- Blue epoxy resin impregnated and stainedcarbonate thin-section (carbonate samples;Alizarin Red-S and Potassium Ferricynide )

- Blue epoxy resin impregnated and K-felsdarstained thin-section (clastic deposits; usingSodium Cobalt nitrite)

- Polished thin-section

Carbonate and clastic rocks


Thin-section Petrography - Technical Value

Thin-section petrography aims to:

• Refine sedimentological/environmentalinterpretations

• Characterise the diagenetic overprint on thedeposits

• Provides an assessment of the pore systemdevelopment and the controls on reservoir quality

• Assist in the generation of reservoir rock types andthe selection of representative SCAL samples

For this purpose, Badley Ashton:

• Selects representative petrographical sample sets

• Analyse thin-section samples at various levels ofdetail

• Integrates observations with additional datasets(XRD, CL, image analysis, fluid inclusions, SEM,isotopes, trace elements)

Fluid Inclusion AnalysisSEM photomicrograph

CL photomicrographThin-section

photomicrograph

100µm

Microscopy


Microporosity analysis using SEM

• Characterising the micritic microfabrics to understand the variability of porosity and permeability within microporous limestones

• Integration of results within rock-typing schemes

Dataset coded by micrite fabrics

Deville de Periere et al., 2011


Reservoir quality analysis

• Explains key reservoir quality

trends by integrating all the

available plug-scale datasets.

• Porosity, permeability and MICP

data are coded by relevant

sedimentological and

petrographical parameters (eg.

grain size, cement abundance,

dominant pore type, micritic matrix

habit, etc). Also integrates CT-scan

data, where available, to assess

plug-scale heterogeneities.

• Aims to characterise the

sedimentological and diagenetic

controls affecting the pore system

to assess their influence in time and

space.


Pore systems & Rock Typing

• Grouping of samples by pore systems is based on core, petrographical and CCA/SCAL data.

• This is a first step before the production of RTs and is designed to help petrophysicists integrating core

and log data.


Rock Types and Permeability

CCA Porosity vs Permeability: Rock typePorosity vs permeability - Rock Type

0.001

0.01

0.1

1

10

100

1000

0 5 10 15 20 25 30 35

Porosity (He, %)

Perm

eab

ilit

y (

Kl m

D)

A B C D E

Geomean YME vs Perm (without fractures)

y = 2291.6x-5.0126

R2 = 0.351

0.1

1

10

100

1000

2 3 4 5 6 7

YME (Mpsi)

Pe

rm

ea

bil

ity

(K

l m

D)

all data a b c d Power (all data)

YME vs permeability

Rock type A shows 2-3 order of magnitude variation in

permeability - Is this a function of dominant pore type? TS

data confirm the macro vs micropore control on permeability,

however, it is necessary to predict this information from

wireline logs.

Macropores

Mechanical properties

13

Chemostrat Analytical Services

Oil Services -Re-Os Geochronology, trace element analysis

Stable Isotope Services –δ13Corg with TOC, δ13Ccarb and δ18Ocarb S , δ34SPYR

Chemostratigraphy –ICP-OES, ICP-MS & XRF

Mineralogical Analysis –XRD (clay & whole rock), QXRD, FTIR

Rock Magnetic Services –Magnetostratigraphy, Magnetic Susceptibility

Chemostrat Analytical Services(cont.)

Provenances Services Heavy Mineral Analysis, Provenance Analysis of Silt, Detrital Feldspar Isotope Analysis, Grain Chemistry, Geochronology of Detrital Zircon / Apatite, Enhanced Petrography, Raman Spectroscopy,

Geochronology –Re-Os Geochronology, Zircon Age Dating

Portable Solutions –Handheld XRF, Benchtop XRF, FTIR

Sample PreparationWashing, grinding, pelleting

Our Clients

PDO

Oxy

CCED

MEDCO ARABIA LTD

Shuram Oil & Gas Location & Contacts

Location: Way No. 1821, Building No.1465,

Qurum, Muscat, Sultanate of Oman.

Email: [email protected], [email protected]

Tel: +968-24561900

+968-24560008

Fax: +968-24562278

mailto:[email protected]

mailto:[email protected]

shuram oil & gas laboratory geochemical laboratory and ...shuramgroup.com/resources/sog lab...

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