Characteristics of strike-slip fault and its controlling on oil in Shuntuoguole region, middle Tarim Basin

Based on the detailed interpretation of 3D seismic data from Shuntuoguole region in the middle Tarim Basin,the Shuntuo No.1 strike-slip fault was identified,and its structural characteristics,active periods,genesis and influences on reservoir were also studied.The structural styles of the Shuntuo No.1 strike-slip fault included extensional linear structure,negative flower structure,en-echelon tension normal fault,dolphin and riband effects,etc.Its main active time lasted from the end of Silurian to the Early Devonian.At the end of Caledonian,the Altym Island Arch compressed severely from the southeast and acted on the northeast-trending weak zone of basement,resulting in the northeast-trending strike-slip fault.Recent studies have proved that low-amplitude anticline traps related to the northeast-trending strike-slip fault are favorable oil-and-gas exploration targets of Silurian in Shuntuoguole region of the middle Tarim Basin.