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ORIGINAL RESEARCH article
Front. Earth Sci.
Sec. Georeservoirs
Volume 12 - 2024 |
doi: 10.3389/feart.2024.1464924
Segmentation Characteristics of Strike-Slip Fault Zone and Its Reservoir Control Mechanisms in the Southwestern Tarim Basin
Provisionally accepted- 1 China University of Mining and Technology, Beijing, Beijing, China
- 2 Research Institute of Petroleum Exploration and Development, Northwest Oilfield Company, Sinopec, Urumqi, China
- 3 SINOPEC Petroleum Exploration and Production Research Institute, Beijing, Beijing, China
Understanding how fault-related structures influence oil and gas accumulation is crucial for geological investigations and exploration planning. This study, based on 3D seismic data, analyzes the northeast-trending strike-slip fault zone in the eastern part of the Bachu Uplift. Automatic fault extraction techniques were employed to delineate the strike-slip fault zone, and the parallel bedding indicator was used to identify reservoirs and investigate the fault's segmented features and reservoircontrolling characteristics. The results show that the northeast-trending strike-slip fault is primarily governed by simple shear stress and conforms to the Riedel shear model. Three distinct structural styles were developed: vertical, pull-apart, and push-up segments, each exhibiting varying profile characteristics and planar patterns. The segmentation of the strike-slip fault controls the distribution of Ordovician fault-karst reservoirs. An oil and gas enrichment model for the strike-slip fault zone has been established, characterized by external hydrocarbon supply, fault-mediated migration, segmented reservoir control, and high-elevation accumulation. This study offers valuable insights for the exploration of fault-karst reservoirs controlled by strike-slip faults.
Keywords: strike-slip faults1, fault-karst reservoirs2, segmentation3, structure characterization4, tarim basin5
Received: 15 Jul 2024; Accepted: 03 Sep 2024.
Copyright: © 2024 Guo, Yang, Geng, Wang, Zhang, Wang and Han. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Ruizhao Yang, China University of Mining and Technology, Beijing, Beijing, China
Feng Geng, Research Institute of Petroleum Exploration and Development, Northwest Oilfield Company, Sinopec, Urumqi, China
Li Wang, SINOPEC Petroleum Exploration and Production Research Institute, Beijing, Beijing, China
Shijie Zhang, China University of Mining and Technology, Beijing, Beijing, China
Lingda Wang, China University of Mining and Technology, Beijing, Beijing, China
Fengtao Han, China University of Mining and Technology, Beijing, Beijing, China
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