Ordovician Differential Deformation Mechanism of Northern Section of FⅠ17 Strike-Slip Fault, Tarim Basin

新疆石油地质 ›› 2024, Vol. 45 ›› Issue (zk(English)): 79-86.

• OIL AND GAS EXPLORATION • 上一篇下一篇

Ordovician Differential Deformation Mechanism of Northern Section of F_Ⅰ17 Strike-Slip Fault, Tarim Basin

CAI Zhenzhong^1,2,3, LI Bing^2,3,4, LUO Xiao^2,3,4, LI Huiyuan^2,3,4, LI Mengqin^2,3,4, LI Zhengyang^2,3,4, WANG Qinghong^2,3,4

1. Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China;
2. R&D Center for Ultra-Deep Complex Reservoir Exploration and Development, CNPC, Korla, Xinjiang 841000, China;
3. Xinjiang Engineering Research Center for Ultra-Deep Complex Reservoir Exploration and Development, Korla, Xinjiang 841000, China;
4. Research Institute of Exploration and Development, Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China

收稿日期:2024-02-24 修回日期:2024-03-11 出版日期:2025-01-01 发布日期:2025-09-08

Ordovician Differential Deformation Mechanism of Northern Section of F_Ⅰ17 Strike-Slip Fault, Tarim Basin

CAI Zhenzhong^1,2,3, LI Bing^2,3,4, LUO Xiao^2,3,4, LI Huiyuan^2,3,4, LI Mengqin^2,3,4, LI Zhengyang^2,3,4, WANG Qinghong^2,3,4

1. Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China;
2. R&D Center for Ultra-Deep Complex Reservoir Exploration and Development, CNPC, Korla, Xinjiang 841000, China;
3. Xinjiang Engineering Research Center for Ultra-Deep Complex Reservoir Exploration and Development, Korla, Xinjiang 841000, China;
4. Research Institute of Exploration and Development, Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China

Received:2024-02-24 Revised:2024-03-11 Online:2025-01-01 Published:2025-09-08
About author:CAI Zhenzhong, E-mail: caizz-tlm@petrochina.com.cn

摘要/Abstract

Abstract: To understand the role of strike-slip faults in hydrocarbon accumulation in carbonate reservoirs, based on 3D seismic data, the development characteristics and tectonic deformation processes of the northern section of the FI17 strike-slip fault in the Tarim basin were analyzed, and a sandbox physical simulation was performed on the formation and evolution of strike-slip faults by using natural prototypeing. The FI17 strike-slip fault is divided into two sections. The southern section, nearly NE-SW trending, is characterized by en echelon faults, with the Yijianfang formation showing an uplifting feature and significant vertical deformation during the Ordovician period. The northern section, nearly NNE-SSW trending, is dominated by linear strike-slip faults, with the Yijianfang formation exhibiting weak deformation and slight subsidence in local areas during the Ordovician period. Sandbox physical simulation results show that a series of uplift zones formed along the main displacement zone of linear strike-slip faults, while the deflected strike-slip faults formed a series of uplift zones in the southern section and presented strata subsidence in the northern section. Under identical stress conditions, differences in the initial strikes of strike-slip faults lead to the changes in the stress put on the faults, thereby influencing their evolution processes. The southern section of the FI17 strike-slip fault is found with more concentrated stress in compressional uplift zone and more developed fractures and vugs locally, containing richer hydrocarbons. The southern section is expected to be superior in exploration to the northern section.

Key words: Tarim basin, Aman transitional zone, Ordovician period, strike-slip fault, differential deformation mechanism, physical simulation

CAI Zhenzhong, LI Bing, LUO Xiao, LI Huiyuan, LI Mengqin, LI Zhengyang, WANG Qinghong. Ordovician Differential Deformation Mechanism of Northern Section of F_Ⅰ17 Strike-Slip Fault, Tarim Basin[J]. 新疆石油地质, 2024, 45(zk(English)): 79-86.

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Ordovician Differential Deformation Mechanism of Northern Section of F_Ⅰ17 Strike-Slip Fault, Tarim Basin

Ordovician Differential Deformation Mechanism of Northern Section of F_Ⅰ17 Strike-Slip Fault, Tarim Basin

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