Numerical modelling of self-potential in subsurface reservoirs
File(s)
Accepted version
Author(s)
Alarouj, Mutlaq
Ijioma, Amadi
Graham, Malcolm Thomas
MacAllister, Donald John
Jackson, Matthew David
Type
Journal Article
Abstract
We report a new, open-source, MATLAB-based 3D code for numerically simulating the self-potential (SP) in subsurface reservoirs. The code works as a post-processor, using outputs from existing reservoir flow and transport simulators at a selected timestep to calculate the SP throughout the reservoir model. The material properties required to calculate the SP are user defined and may be constant or vary in each cell. The code solves the equations governing flow and transport of electrical charge and global charge conservation using a control-volume-finite-difference scheme. Electrical currents associated with the SP may spread beyond the reservoir model domain, and the code allows for the domain to be extended vertically and laterally to account for this. Here, we present the governing equations and the numerical method used and demonstrate application of the code using an example in which we predict the SP signals associated with oil production from a subsurface reservoir supported by water injection.
Date Issued
2021-01-01
Date Acceptance
2020-10-28
Citation
Computers & Geosciences, 2021, 146, pp.1-19
ISSN
0098-3004
Publisher
Elsevier BV
Start Page
1
End Page
19
Journal / Book Title
Computers & Geosciences
Volume
146
Copyright Statement
© 2020 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor
Bright Gulf General Trading and Contracting Company W.L.L.
Identifier
https://www.sciencedirect.com/science/article/pii/S0098300420306312?via%3Dihub
Grant Number
BG/2019/P01/S06
Subjects
Science & Technology
Technology
Physical Sciences
Computer Science, Interdisciplinary Applications
Geosciences, Multidisciplinary
Computer Science
Geology
Self-potential
Subsurface reservoirs
Electrokinetic potential
Exclusion-diffusion potential
Thermoelectrical potential
POROUS-MEDIA
STREAMING POTENTIALS
ELECTRICAL-CONDUCTIVITY
LABORATORY MEASUREMENTS
REDOX CONDITIONS
FLOW
GROUNDWATER
ANOMALIES
TEMPERATURE
INVERSION
Geochemistry & Geophysics
04 Earth Sciences
08 Information and Computing Sciences
09 Engineering
Publication Status
Published
Article Number
ARTN 104656
Date Publish Online
2020-11-04