Deformation patterns and hydrocarbon potential related to intracratonic strike-slip fault systems in the east of Central Uplift Belt in the Tarim Basin  

作　　者：Fei Ning Jinbiao Yun Zhongpei Zhang Peng Li 

机构地区：[1]Laboratory of Structural and Sedimentological Reservoir Geology,Exploration&Production Research Institute,SINOPEC,Beijing,100083,China [2]Exploration&Production Research Institute,SINOPEC,Beijing,100083,China [3]Geology and Geophysics Department,University of Wyoming,82071,USA

出　　处：《Energy Geoscience》2022年第1期63-72,共10页能源地球科学（英文）

基　　金：financial support from National Natural Science Foundation of China projects 41972128 and 41872161;a Strategic Priority Research Program of the Chinese Academy of Sciences grant(XDA14010402).

摘　　要：Strike-slip faults,proven to be closely linked to hydrocarbon migration and accumulation,are wide-spread in the Tarim Basin Craton.Deformation patterns in the eastern part of the Central Uplift Belt of the Tarim Basin are analyzed in detail to understand the deformation model and genetic mechanism of strike-slip faults,how their patterns impact reservoir formation and influence oil and gas potential.Regional tectonic events are taken into consideration to identify the primary factors that controlled the development of strike-slip faults in the region.The Tazhong Uplift in the eastern part of Central Uplift Belt is believed to be a complex anticlinal uplift formed by compression-and-torsion acting on the Cambrian-Middle Ordovician platform during the middle-late Caledonian period.Multi-stage development of this north-trending fault-fold belt and the NE-trending strike-slip faults make it structurally complex.The NE-trending Paleozoic strike-slip faults were formed jointly by the differential thrusting of the Tazhong Uplift along Fault No.Ⅰand the NE-trending shear sliding of the basal fault blocks during the middle-late Caledonian-early Hercynian.Based on the distribution of effective source rocks,the tectonic setting during the period critical to hydrocarbon accumulation,and the distribution of conductive faults,the northern slope of the Tazhong Upliftd-especially its west-central part where the NE-trending faults are developed is not only located close to the northern hydrocarbon source rock area but also possesses conditions suitable for the development of carbonate reservoirs.In addition,the NE-trending faults provide passage for initial development of the reservoir and the subsequent migration of oil and gas from the Aman area to the uplifted zone,making the Tazhong Uplift an extremely favorable area for oil and gas accumulation with substantial potential for exploration.

关 键 词：Strike-slipfault Deformation pattern Hydrocarbon accumulation CRATON Tarim basin 

分 类 号：P618.13[天文地球—矿床学]