Abstract：The major gas-paying formation of Gas Field A,which is located in Qaidam Basin,shows apparently higher resistivity than the host.With MT method,we can detect the contrast of these phenomena.Usually there are many factors increasing resistivity of formations.Since MT method can not definitely determine which factor increased formations' resistivity,we have to make a test about induced polarization effects.Considering the local geological targets,we use Cole-Cole model of spectrum induced polarization to simulate induced polarization effects of ground and abstract information related to IP effect.The test shows that gas reservoir appears both high resistivity and IP effect.So we can use IP effect to further evaluate targets which have high resistivity,and predict with more evidences if they contain gas.
罗卫锋, 何展翔, 王财富, 董卫斌, 张宏强. 大地电磁激电效应油气检测试验[J]. 石油地球物理勘探, 2011, 46(6): 978-983.
Luo Wei-feng, He Zhan-xiang, Wang Cai-fu, Dong Wei-bin, Zhang Hong-qiang. A test study of induced polarization effects of magnetotelluric in oil and gas detection. OGP, 2011, 46(6): 978-983.
