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The National IOR Centre of Norway
IORSim -
An add on tool to ECLIPSE for fast and accurate simulation of multi phase
geochemical interactions at the field scale
Aksel Hiorth1,2, Jan Sagen3, Arild Lohne2, Jan Nossen3,
Jan Ludvig Vinningland2, Terje Sira3
1 University of Stavanger 2 IRIS 3 IFE
The National IOR Centre of Norway
IOR Chemicals
Oil Core
ConocoPhillips, Bartlesville
The National IOR Centre of Norway
The goal
• Predict the performance of IOR chemicals on field scale – Upscale from core scale – History matched industry standard
reservoir models – Effect of combining several EOR
methods • E.g low salinity water flooding &
polymer
The National IOR Centre of Norway
Challenges
Complex flow
pattern
Multiple Wells
Temp. gradients
Geo-chemistry
Oil Displacement
Water Chemistry
• Mature fields • Chemical EOR
The National IOR Centre of Norway
The Approach
Eclipse Reservoir simulator
IORSim(*)
advect components
Geo-chemistry
ü
Restart Files Sw, Po, Pw, qw
…
Oil Rate
Water Rate SO4
Mg
The National IOR Centre of Norway
Add Temperature
Eclipse Reservoir simulator
IORSim
advect components
Geo-chemistry
ü
Restart Files Sw, Po, Pw, qw
… Temp
Oil Rate
Water Rate SO4
Mg T
The National IOR Centre of Norway
Grid refinement
Eclipse Reservoir simulator
Files
IORSim
Geo-chemistry Temp
Refined Unrefined
The National IOR Centre of Norway
Backward coupling
Eclipse Reservoir simulator
Files
IORSim
Geo-chemistry Temp
First step use Ocean technology Schlumberger Jarle Haukås & Lars Sønneland (Schlumberger Stavanger Research)
The National IOR Centre of Norway
The IORSim methodology on a complex computational problem
• Fast full geochemical calculations • Robust, efficient solution:
– Transport and geochemistry solved separately and implicitly
– Decompose reservoir into separate flow paths – Flow path is solved on a block sequentially – Recycling of stored geochemical solutions
The National IOR Centre of Norway
Results
• Norne segment E – Tracer – Realistic reservoir sector model
• Ekofisk sector – Geochemistry – Simplified model
The National IOR Centre of Norway
Norne tracer simulation Injection of S36 tracer in well F-1H (Slice of Norne E segment shown)
Tracer injection
INJ PROD
Well closed
The National IOR Centre of Norway
Ekofisk sector Oil Saturation
INJ I
PROD I
INJ III
INJ II
INJ I
PROD I
INJ III
INJ II
Oil
Water
Oil
Water Cum
m P
rod
Oil,
Wat
er R
at
The National IOR Centre of Norway
Cl Ions
INJ I
PROD I
INJ III
INJ II
The National IOR Centre of Norway
Mg ions
INJ I
PROD I
INJ III
INJ II
The National IOR Centre of Norway
Adsorbed Mg
INJ I
PROD I
INJ III
INJ II
The National IOR Centre of Norway
Reservoir pH
INJ I
PROD I
INJ III
INJ II
The National IOR Centre of Norway
Anhydrite
INJ I
PROD I
INJ III
INJ II
The National IOR Centre of Norway
Temperature
INJ I
PROD I
INJ III
INJ II
The National IOR Centre of Norway
Produced Water Chemistry
SO4 Model Constant Temp
SO4 Model Temp Gradients
The National IOR Centre of Norway
Way forward (2015/2016)
• Extension of the IORSim code – Polymer combined with low sal – Back ward coupling to Eclipse – Flexible input format – Extension to other reservoir simulators
• Analyzing more field data – Received data from Statoil, BP & CoP – Temperature modeling – Produced water chemistry
