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Integrated model construction for CO2-EOR monitoring via charged-wellbore casing controlled-source electromagnetics

Conference · · SEG Technical Program Expanded Abstracts 2019
 [1];  [2];  [2];  [3];  [3];  [4]
  1. Center for Gravity, Electrical & Magnetic Studies (CGEM), Colorado School of Mines; Colorado School of Mines
  2. Center for Gravity, Electrical & Magnetic Studies (CGEM), Colorado School of Mines
  3. Energy and Geoscience Institute, University of Utah
  4. United States Geological Survey
+ Show Author Affiliations
We present a method for the integrated development of 3D electrical conductivity models for CO2-EOR monitoring with charged wellbore casing controlled-source electromagnetics (CWC-CSEM). The model is constructed through the multiphysics integration of reservoir simulation, seismic, borehole resistivity, and transient EM (TEM) data. The process is performed in two stages. First, a large background conductivity model is constructed from the combination of seismic, borehole, and TEM data. Second, a more detailed and dynamic component of the model is created within the production interval by converting the reservoir simulation parameters to conductivity through Archie’s equation. In this presentation, we demonstrate the complete workflow for building these 3D conductivity site models that can be updated throughout production using the Bell Creek oil field as an example. We then show application of the developed site model to simulating the predicted CWC-CSEM data as one step in the larger problem of reservoir imaging and monitoring of injected CO2 during enhanced oil recovery.
Research Organization:
Colorado School of Mines
Sponsoring Organization:
USDOE Office of Fossil Energy (FE)
Contributing Organization:
Denbury
DOE Contract Number:
FE0028320
OSTI ID:
1867873
Report Number(s):
DOE-MINES-0028320; SubTER: Area of Interest 1
Conference Information:
Journal Name: SEG Technical Program Expanded Abstracts 2019
Country of Publication:
United States
Language:
English

References (8)

Toward the Next Generation of Multiperiod Optimal Power Flow Solvers journal July 2018
Controlled-source electromagnetic monitoring of reservoir oil saturation using a novel borehole-to-surface configuration: CSEM monitoring of oil saturation journal September 2015
3D frequency-domain electromagnetics modeling using decoupled scalar and vector potentials conference October 2012
Three-dimensional controlled-source electromagnetic modelling with a well casing as a grounded source: a hybrid method of moments and finite element scheme: 3D CSEM modelling with well casing journal October 2015
Marine controlled-source electromagnetic sounding: 2. The PEGASUS experiment journal March 1996
The Electrical Resistivity Log as an Aid in Determining Some Reservoir Characteristics journal December 1942
Conductivity models for Archie rocks journal May 2012
Effects of well Casing on Potential Field Measurements Using Downhole Current Sources1 journal August 1990

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CO2
Sequestration
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time-lapse
reservoir model