Exploration around small-displacement strike-slip faults in Tarim Basin gets much breakthrough,reveal-ing the existence of fault-controlled reservoirs.However,weak fault activity and high and steep occurrence cause difficulty in seismic interpretation and geological analysis,requiring deep understanding of development character-istics of strike-slip faults from perspective of genetic mechanism study to guide seismic interpretation.Taking strike-slip faults in Manshen block of Fuman oilfield in Tarim Basin as an example,formation mechanism and develop-ment characteristics of strike-slip faults are analyzed by structural analysis combined with sandbox physical model-ing of similarity based on 3D seismic data.The research shows that S-N strike-slip faults in studied area formed in the same period with NE-striking faults,but lagged in development stage,growing outward from NE-striking faults and gradually connecting.Faults intersection zones provide favorable high-quality reservoir formation conditions.The formation of S-N-striking faults is controlled by distribution of deep ductile layers and spacing of NE-striking faults,inferring possible existence of other unidentified S-N-striking faults in studied area.The research contributes to improve strike-slip faults interpretation and guide the exploration of fault-controlled fractured-vuggy carbonate reservoirs.
维普
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