Reservoir distribution prediction on the top of Middle Triassic Leikoupo Formation in Puguang Area
Du Haokun1, Cai Qixin1, Xiao Bin1, Zheng Ling1, Jin Da1, Xue Yajuan2,3
1. Geophysical Research Institute, Zhongyuan Oilfield Branch Co., SINOPEC, Zhengzhou, Henan 450003, China; 2. College of Communication Engineering, Chengdu University of Information Technology, Chengdu, Sichuan 610225, China; 3. Key Laboratory of Geophysics, SINOPEC, Nanjing, Jiangsu 210000, China
Abstract：Reservoirs buried in the uppermost part of the Middle Triassic Leikoupo Formation in Puguang are characterized by thinness,little difference of surrounding rock physics,and weak seismic response.So they are very difficult to be identified.To solve this problem,we first use deconvolution-based frequency expansion and 90?-phase shifting to process seismic data.Then we calibrate reservoirs on the processed seismic data and determine clearly reservoir seismic response.On this basis,we conduct reservoir prediction with different ways such as attribute analysis,waveform clustering,coherence analysis,and impedance inversion.According to our prediction,the reservoir distribution is mainly controlled by ancient landform and fractures,and the southwest part of the study area is favorable for reservoir development.Our applications in Puguang Area shows that deconvolution-based frequency expansion and 90°-phase shifting highlight thin reservoirs (5~20m) in the top Leikoupo Formation,and ensure high reliability of thin reservoir prediction.
杜浩坤, 蔡其新, 肖斌, 郑玲, 晋达, 薛雅娟. 普光地区中三叠统雷口坡组顶部储层分布预测[J]. 石油地球物理勘探, 2017, 52(6): 1269-1279.
Du Haokun, Cai Qixin, Xiao Bin, Zheng Ling, Jin Da, Xue Yajuan. Reservoir distribution prediction on the top of Middle Triassic Leikoupo Formation in Puguang Area. Oil Geophysical Prospecting, 2017, 52(6): 1269-1279.
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