Xinjiang Petroleum Geology ›› 2023, Vol. 44 ›› Issue (1): 33-42.doi: 10.7657/XJPG20230105

• OIL AND GAS EXPLORATION • Previous Articles     Next Articles

Stratification and Segmentation Characteristics and Tectonic Evolution of Shunbei No.5 Strike-Slip Fault Zone in Tarim Basin

CHEN Ping1a,1b(), NENG Yuan1b,2(), WU Xian3, HUANG Cheng3, WANG Laiyuan3, GUO Man2   

  1. 1a. School of Earth Sciences, China University of Petroleum, Beijing 102249, China
    1b. State Key Laboratory of Oil and Gas Resources and Exploration, China University of Petroleum, Beijing 102249,China
    2. Petroleum College,Karamay Campus,China University of Petroleum (Beijing),Karamay,Xinjiang 834000,China
    3. Northwest Oilfield Company, Sinopec, Urumqi, Xinjiang 830011, China
  • Received:2021-12-16 Revised:2022-05-12 Online:2023-02-01 Published:2023-02-03

Abstract:

The ultra-deep fault-karst reservoirs in the Tarim basin are mainly distributed along strike-slip fault zones,and the oil and gas exploration effects are poor in the areas far away from fault zones,that is,the activity scale of strike-slip fault zones control the scale of hydrocarbon accumulation. The Shunbei No.5 strike-slip fault zone is a super-large strike-slip fault zone,which is characterized by deep burial,complex internal structure,and evident stratification and segmentation. Based on high-quality 3D seismic data,the geometry,kinematics and dynamics of the Shunbei No.5 strike-slip fault zone were systematically analyzed. It is recognized that the Shunbei No.5 strike-slip fault zone is evidently layered (including 5 structural layers),and also segmented,with the southern and northern segments having different kinematic characteristics. The southern segment has experienced 5 stages of evolution,and the northern segment has experienced 4 stages of evolution.

Key words: Tarim basin, Shunbei No.5 strike-slip fault zone, ultra-deep layer, fault-karst reservoir, structural layer, segmented activity, multi-layered structure, multi-stage movement

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