Numerical Feasibility Study of Electromagnetic Monitoring of CO2 Sequestration in Deep Reservoirs (Invited)
Abstract
A growing consensus that the global climate is changing as a result of increased atmospheric concentrations of greenhouse gases such as CO2 has generated significant efforts to develop effective methods for carbon capture and storage (CCS). In order to achieve this task, geophysical techniques for monitoring of CO2 movement within hydrocarbon reservoirs have been investigated. Until recently, seismic methods have been the most highly developed and applied for reservoir monitoring. In this paper we present a feasibility study of permanent electromagnetic (EM) monitoring of CO2 sequestration in deep reservoirs using a novel borehole-to-surface EM (BSEM) method. The feasibility of the BSEM method depends on the change in the measured EM field introduced by increasing the concentration of CO2 and the inherent resolution of the technique. The BSEM method has the advantage that its sensitivity and resolution can be increased by locating the sources of the EM field within the borehole close to the target reservoir. We illustrate the effectiveness of the BSEM method for monitoring CO2 in deep reservoirs by computer simulations for the Kevin Dome sequestration site in Montana, USA.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2013
- Bibcode:
- 2013AGUFM.T51A2442H
- Keywords:
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- 8199 TECTONOPHYSICS General or miscellaneous;
- 8194 TECTONOPHYSICS Instruments and techniques