Fiorentini Geochemistry
Training, Consulting, Analysis
Petroleum Geochemistry
E&P
Profitability
E&P Asset
Management
All technical and economic decisions
in the oil industry depend on
an understanding of fluid properties.
Prospect
Ranking
Development
Planning
Seismic Amplitude,
Basin Modeling
Crude Oil Price
System
Selection
Flow Rate
Reserve Estimates
Flow Assurance
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.
2014 Training Locations
London
Dubai
Villahermosa
Kuala Lumpur
Lima
Perth
Buenos Aires
Punta Arenas
Canberra
Sour Gas Well Evaluations – Abu Dhabi
Shuwaihat
Bab
Shah
Predicting H2S and CO2 Concentrations in Gas
From residual condensate in core samples
BB427101V : BAB-427
Scale : 1 : 800
DEPTH (10800.FT - 11550.FT)
DB : IP Project - UAE Regional (210)
DEPTH
0.
FT
CORE:Core No
10.
0.
Orig:GR1 (GAPI)
9/3/2006 15:15
Orig:IMPH (OHMM)
80. 0.2
Orig:RHOB (G/C3)
2000. 1.95
Orig:RT (OHMM)
0.2
Orig:NPHI (CFCF)
2000. 45.
Msol:PhiT (dec)
Orig:SW (CFCF)
2.95 0.
0.4 100.
0. 0.
CORE:CPOR (%)
-15. 0.
40.
0.
Orig:DT (US/F)
140.
Msol:VLime (dec)
1.
Msol:VDol (dec)
1.
Msol:VAndydrite (dec)
40.
0.
1.
Msol:PhiT (dec)
1.
Formation
Facies
Depth
GR
Res
Den/Neu/Sonic
Por
Sw
0.
Lithology
Based on a Por cutoff of 2%
HABSHAN
Habshan
Manifa
HABSHAN
Gross
(ft)
Net
(ft)
NTG
(%)
POR
(%)
Min
Avg
Max
Min
Avg
Max
Min
Avg
Max
Well avg Min
Total Avg
Well avg Max
Up
Arab
UPPER
ARAB
HITH
Salina/Sabkha/
Lagoonal
HITH
Hith
Salina
Sabkha
10900
11000
89
Arab - Salina/Sabkha
Arab A,B reservoirs
11%
532– 28 %
H2S 7%
208
75
39%
9%
312
132
60%
12%
35
7
20%
5%
0
0%
2%
146
0
0%
2%
207
19
9%
5%
316
70
38%
9%
11100
Barrier Shoal
(Oolite)
Arab
-Tidal Flat
Flat/Lag
Tidal
11200
33
68
Arab - Barrier Shoal
124
Arab36C,D reservoirs
47%
6%
23
–
28
%
H
S
120
97% 2
10%
Mid to Outer Ramp
LOWER
ARAB
Lr
Arab
11300
Arab - Mid to Outer
11400
Limestone
Outer
Ramp
Dolomite
JUBAILA
Jubaila
JUBAILA pt
11500
Anhydrite
Porosity
Fluid Property Mapping:
Semi-volatile aromatics: C4 Naphthalenes, Dibenzothiophenes
Bacteria
Generation
Land Plants
(Gymnosperms)
1,2,5,6-TeMN
1,3,6,7-TeMN
Equilibration
1,2,5,7-TeMN
Generation
Land Plants
(Angiosperms)
1,2,3,6-TeMN
Generation
Coral/Algae
6
Naphthalene
Dimethylnaphthalenes
28.00
Ion 184
23/07/2014
30.00 32.00
34.00
36.00
38.00
40.00
42.00
44.00
46.00
Methylnaphthalenes
48.00
50.00
52.00
54.00
1.2,5,6 + 1,2,3,5-Tetramethylnaphthalenes
1.2,6,7-Tetramethylnaphthalene
1.2,3,7-Tetramethylnaphthalene
1.2,3,6-Tetramethylnaphthalene
1,2,4,6 + 1,2,4,7 + 1.4,6,7-Tetramethylnaphthalenes
1.2.5,7-Tetramethylnaphthalene
2.3,6,7-Tetramethylnaphthalene
1.3,6,7-Tetramethylnaphthalene
1.3,5,7-Tetramethylnaphthalene
Semi-volatile aromatics: C4 Naphthalenes, merged ion chromatogram
46.50 47.00 47.50 48.00 48.50 49.00 49.50 50.00 50.50 51.00 51.50
10
56.00
% CO2 in Gas
Relationship between H2S, CO2 and molecular composition of condensate
14.0
12.0
10.0
8.0
6.0
4.0
2.0
0.0
0.09
0.08
0.07
0.06
0.05
0.04
0.03
0.02
0.01
0.00
Molecular Parameter
Prediction of gas composition from molecular parameters
measured on core/cuttings samples.
Shale Gas Well Evaluations – Argentina, Chile
Sample and Data
Acquisition
Mud Gas
1
Mud gas GC
6
Gas composition
2
Mud gas Isotubes
Mud gas Mass Spec
Canister core
Interpretation and
reporting
Analysis
Ctgs. For FIS
Composition,
Gas
composition
Isotopes
7
8
Gas Isotopes
4
Gas Desorption
Gas composition,
isotopes
Gas maturity from
composition and
isotopes: in-situ
generated or
migrated? Free gas or
adsorbed?
9
10
Ctgs. For FIS
Adsorption Isotherm
Volume of gas in
place, adsorbed and
free gas storage
capacity
11
TOC, RE
Conventional core
Plugging
5
12
TOC, RE
13
Extract Analysis
Visual Kerogen
Analysis
14
SR type , maturity,
richness
Fluid Property mapping of Shale Oil – USA, Abu Dhabi, Oman
Oil producing wells:
Gas producing wells:
0.7%Ro
0.8 %Ro
0.9 %Ro
1.0 %Ro
1.1 %Ro
Andrew Murray
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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
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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, Postdoc Stanford University, USA
Geochemical consultant with Shell in the Netherlands,
Canada, Oman, USA (1978 – 2011)