Seismic response characteristics and identification of fault-karst reservoir in Shunbei area, Tarim Basin
MA Naibai1, JIN Shenglin2, YANG Ruizhao2, MENG Lingbin2, WANG Li2, and HU Yongzhen2
1. Research Institute of Exploration and Production, Northwest Oilfield Branch Co., SINOPEC, Urumqi, Xinjiang 830011, China; 2. School of Geosciences and Survey Engineering, ChinaUniversity of Mining and Technology(Beijing), Beijing 100083, China
Abstract:The fault-karst reservoir is a kind of the Ordovician carbonate reservoirs in the Tarim Basin,which is also one of the important targets for the hydrocarbon exploration and development.According to the formation mechanism of fault-karst reservoir combined with real petrophysical parameters,a seismic model of fault-karst reservoir is built,and seismic reflection characteristics of fault-karst reservoir are obtained with seismic forward modeling.The seismic modeling results show that the fault-karst reservoir is centered on large-scale strike-slip faults,forming a bouquet-like seismic reflection.The large-scale strike-slip faults show faulted-fracture on seismic events.Fault-karst fracture-cavity reservoirs show single bead-like reflection,strong or weak bead-like reflection groups.The seismic modeling results agree well with seismic data,which proves that the built fault-karst reservoir model is reliable and can help the identification of fault-karst reservoirs on seismic sections.
马乃拜, 金圣林, 杨瑞召, 孟令彬, 王力, 胡永蓁. 塔里木盆地顺北地区断溶体地震反射特征与识别[J]. 石油地球物理勘探, 2019, 54(2): 398-403.
MA Naibai, JIN Shenglin, YANG Ruizhao, MENG Lingbin, WANG Li, and HU Yongzhen. Seismic response characteristics and identification of fault-karst reservoir in Shunbei area, Tarim Basin. Oil Geophysical Prospecting, 2019, 54(2): 398-403.
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