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Benefits of Joint Seismic and EM Inversion for Hydrocarbon Development Projects
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 81st EAGE Conference and Exhibition 2019 Workshop Programme, Jun 2019, Volume 2019, p.1 - 5
Abstract
Reservoir monitoring is illustrated on a Borehole CSEM case study. Ways are examined how to increase the detection power. The following parameters proved important: grid step of computation scheme, incorporation of induction effects, 3D survey design, constrained inversion, guided inversion, timelapse approach. Joint inversion of independent multi-physics datasets is useful: seismics, MT, CSEM, gravmag. It reduces the solution space and enhances the discrimination power for thin beds. Each dataset requires their own quality control. A sequential or simultaneous approach can be chosen. Prestack inversion and AVO effects give access to rock physical parameters. Analysis of the generated data is a challenge. A multi-disciplinary integrated approach is stimulated by the methodology. Joint inversion makes economic sense due to better reservoir management decisions. Improvements and innovations in the workflow should be pursued: better computers, efficient algorithms, extraction of relevant attributes, mixed attributes, principal component analysis, machine learning, neural network analysis.