Reservoir dynamic detection based on multi-channel transient electromagnetic
Wang Xianxiang1,2, Di Qingyun2, Deng Juzhi1
1. National Defense Key Laboratory of Fundamental Science on Radioactive Geology and Exploration Technology, East China University of Technology, Nanchang, Jiangxi 330013, China;
2. Key Laboratory of Shale Gas and Geo-engineering, Institute of Geology and Geophysics, Chinese Academy of Science, Beijing 100029, China
Abstract：Seismic is mostly used approach to dynamic reservoir monitoring to build reservoir model, optimize development programs, and improve oil recovery, but it is very costly. We attempt here to explore reservoir detection using multi-channel transient electromagnetic method. First the principle of the multi-channel transient electromagnetic method is presented. Using electric source, this method generates pseudo-random sequence current to the earth, measures current at the transmitter and voltage at receiver respectively, and gets impulse response through deconvolution. Then the reservoir detection feasibility of the multi-channel transient electromagnetic method is analyzed. It shows that the multi-channel transient electromagnetic method is more suitable for oil and gas reservoir detection with the advantages for detecting resistive bodies. Finally, a numerical simulation of an anticline oil reservoir model shows the proposed method can delineate reservoir boundaries at much cheaper cost, and well reveal changes in the reservoir.
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