fiorentini geochemistry training, consulting, analysis
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Petroleum Geochemistry
All technical and economic decisions in the oil industry depend on
an understanding of fluid properties.
The main budget items in oil and gas field development (well count, surface facilities) depend on fluid properties like viscosity, molecular composition and gas-to-oil ratio. Many sour gas and shale gas accumulations have compositional gradients with highly variable fluid compositions, creating large uncertainties in development economics. Geochemical methods to confine the uncertainty in fluid properties will allow oil companies to optimise well placements and recovery efficiency.
Crude Oil PriceFlow Rate
Reserve Estimates Flow Assurance
System Selection
Seismic Amplitude,Basin Modeling
Development Planning
Prospect Ranking
E&P AssetManagement
E&P Profitability
FLUID PROPERTIES
Punta Arenas
London
Dubai
CanberraPerth
Kuala Lumpur
Buenos Aires
Villahermosa
Lima
2014 Training Locations
Arab C,D reservoirs23 – 28 % H2S
BB427101V : BAB-427Scale : 1 : 800
DEPTH (10800.FT - 11550.FT) 9/3/2006 15:15DB : IP Project - UAE Regional (210)
DEPTHFT
CORE:Core No10. 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. 0.4CORE: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 FaciesOu
terRa
mp
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
MinAvgMax
Well avg MinTotal Avg
Well avg Max
MinAvgMax
MinAvgMax
Based on a Por cutoff of 2%Sa
lina/S
abkh
a/La
goon
alUp Arab
Salin
aSa
bkhaHith
Tidal Flat
Barri
er Sh
oal
(Ool
ite)
Lr Arab
Mid
to O
uter
Ramp
Arab A,B reservoirs5 – 28 % H2S
Predicting H2S and CO2 Concentrations in GasFrom residual condensate in core samples
6
Fluid Property Mapping:Semi-volatile aromatics: C4 Naphthalenes, Dibenzothiophenes
1,2,5,6-TeMN 1,3,6,7-TeMN
1,2,5,7-TeMN 1,2,3,6-TeMN
Bacteria
Land Plants(Gymnosperms)
Land Plants(Angiosperms) Coral/Algae
Generation
Generation Generation
Equilibration
23/07/2014 10
1.3,
5,7
-Tet
ram
eth
yln
apht
hal
ene
1.3,
6,7
-Tet
ram
eth
yln
apht
hal
ene
1,2,
4,6
+ 1
,2,4
,7 +
1.4
,6,7
-Tet
ram
ethy
lnap
hth
ale
nes
1.2.
5,7
-Tet
ram
eth
yln
apht
hal
ene
2.3,
6,7
-Tet
ram
eth
yln
apht
hal
ene
1.2,
6,7
-Tet
ram
eth
yln
apht
hal
ene
1.2,
3,7
-Tet
ram
eth
yln
apht
hal
ene
1.2,
3,6
-Tet
ram
eth
yln
apht
hal
ene
1.2,
5,6
+ 1
,2,3
,5-T
etra
met
hyln
apht
hal
ene
s
28.00 30.00 32.00 34.00 36.00 38.00 40.00 42.00 44.00 46.00 48.00 50.00 52.00 54.00 56.00
Ion 184
46.50 47.00 47.50 48.00 48.50 49.00 49.50 50.00 50.50 51.00 51.50
Nap
hth
ale
ne
Methylnaphthalenes
Dimethylnaphthalenes
Semi-volatile aromatics: C4 Naphthalenes, merged ion chromatogram
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
0.000.010.020.030.040.050.060.070.080.09
Molecular Parameter
%CO
2in
Gas
Prediction of gas composition from molecular parameters measured on core/cuttings samples.
Relationship between H2S, CO2 and molecular composition of condensate
Shale Gas Well Evaluations – Argentina, Chile
Sample and Data Acquisition
Interpretation and reporting
Analysis
Ctgs. For FISComposition,Isotopes
Mud gas GC
Mud gas Isotubes Gas composition
Mud gas Mass Spec
Gas composition
Ctgs. For FIS
Gas Desorption
Adsorption Isotherm
Plugging TOC, RE
Gas composition, isotopes
Mud Gas
Canister core
Conventional core
Extract Analysis
Volume of gas in place, adsorbed and
free gas storage capacity
Gas maturity from composition and isotopes: in-situ
generated or migrated? Free gas or
adsorbed?
SR type , maturity, richness
Visual Kerogen Analysis
TOC, RE
1
2
4
5
6
7
8
9
10
11
12
13
14
Gas Isotopes8
1.1 %Ro
1.0 %Ro
0.9 %Ro
0.8 %Ro
0.7%Ro
Oil producing wells: Gas producing wells:
Fluid Property mapping of Shale Oil – USA, Abu Dhabi, Oman
Andrew Murray• Fiorentini Consultant since 2014, based in Perth• Principle Petroleum Systems Advisor at Woodside Energy Ltd. • Associate Editor of “Organic Geochemistry”• Ph.D in Petroleum Geochemistry, Curtin University• Formerly Senior Research Scientist, Geoscience Australia and
Lecturer Universiti Brunei Darussalam• Three years working in the Shell R&D centre, the Hague on
research and technical services
Peter Nederlof• Fiorentini Consultant since 2013, based in Abu Dhabi• Lecturer in industry and academia with EAGE, NExT and EPTS • Ph.D. in Chemistry from the University of Amsterdam, Post-
doc Stanford University, USA • Geochemical consultant with Shell in the Netherlands,
Canada, Oman, USA (1978 – 2011)
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