Minor fault identification in Donghe sandstone reservoirs,Hadson Oilfield
Ling Dongming1,2, Yin Ning2, Zhang Jianwei2, Wang Qing2, Yao Xianzhou2, Li Xiangwen2
1. School of Geosciences, China University of Petroleum (East China), Qingdao, Shandong 266580, China; 2.Korla Branch, GRI, BGP Inc., CNPC, Korla, Xinjiang 841001, China
Abstract：Donghe sandstone reservoirs in Hadson Oilfield,Tarim Basin are characterized by deep burying and low signal-to-noise ratio (SNR) seismic data,which leads great difficulties for minor fault identification.To solve the problems,we try to improve minor fault identification with key modules provided by GeoEast.A.The band-pass filtering and structure-guided filtering are adopted as interpretive processing to obtain new data volume for minor faults investigation,which can also improve data SNR; B.Based on the new data volume,minor faults are identified and depicted by amplitude-curvature and edge detection; C.Based on the results,the edge-protection filtering is used to improve both the fault center focus and the minor fault lateral resolution.Our minor fault identification can broaden understanding of geological and fluid characteristics in Donghe sandstone reservoirs and provide an excellent basis for the future development deployment.
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