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《Fault-Block Oil & Gas Field》 2018-03
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Quantitive identification of natural fractures in tight reservoir of southern Yanchang Oilfield

WANG Yongdong;LEI Junjie;FAN Wanhong;LIN Lifei;HU Guoxiang;QIAO Yong;Yanchang Oilfield Company Ltd.;Beijing Xuri Changsheng Technology Co.,Ltd.;  
In general, with the assistance of 3 D seismic data, natural fracture can be identified and modeled by 3 D modeling.Unfortunately in some cases, 3D seismic data is not available due to survey conditions in the operation area. Based on a case study of southern Yanchang Formation, this paper introduces a technique of natural fracture identification by conventional logging interpretation in the absence of 3D seismic data. With comparison of image interpretation to the responses of conventional logging data, an interpretation model was built up to identify and evaluate nature fractures based on microresistivity log. According to core calibration, this technique was applied to each well in the study project. Integrated with geologic survey of outcrops, the results of analysis and evaluation of natural fractures can be used for discrete fracture network modeling to provide guidance and recommendations for exploration and development operations.
【CateGory Index】: TE31
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