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Hydrocarbon Potential Assessment Methods in Complex Fault Zones: A Case Study of the Southern Pinghu Structural Belt, East China Sea

Author

Listed:
  • Donghui Jiang

    (Sinopec Shanghai Offshore Oil and Gas Company, China Petroleum & Chemical Corporation, Shanghai 200120, China)

  • Sujie Yan

    (Department of Geology, Northwest University, Xi’an 710069, China
    School of Natural Resources and Technology, Xinjiang University of Technology, Hotan 848000, China)

  • Renhai Pu

    (Department of Geology, Northwest University, Xi’an 710069, China)

  • Yunwen Guan

    (Department of Geology, Northwest University, Xi’an 710069, China)

  • Xinxu Dong

    (Department of Geology, Northwest University, Xi’an 710069, China)

  • Shuo Chen

    (Key Laboratory of Coal Resources Exploration and Comprehensive Utilization Ministry of Natural Resources, Xi’an 710021, China
    Shaanxi Coalfield Geophysical Prospecting and Surveying Co., Ltd., Xi’an 710005, China)

  • Siyu Su

    (Key Laboratory of Coal Resources Exploration and Comprehensive Utilization Ministry of Natural Resources, Xi’an 710021, China
    Shaanxi Coalfield Geophysical Prospecting and Surveying Co., Ltd., Xi’an 710005, China)

Abstract

Frequent tectonic activity in rift basins has led to complex fault zones, which have led to extensive hydrocarbon distributions and tremendous resource potential. This study investigated the hydrocarbon potential in the southern Pinghu structural belt, focusing on fault traps in complex fault zones. Through fault sealing analysis and gas detection attenuation methods, this study aims to improve exploration success rates. The application outcomes demonstrate that the Shale Gouge Ratio (SGR) threshold for achieving the lateral sealing of faults in the southern Pinghu structural belt is 34%, with a critical fault throw of 100 m. Regions where the fault’s lateral sealing zone corresponds with areas exhibiting anomalous gas responses are deemed promising for hydrocarbon accumulation. Additional analysis indicates that favorable fault trap development occurs along the foot walls of significant faults, particularly in the eastern sector of the study area. The findings are corroborated by actual drilling data, affirming the efficacy of these methods in pinpointing hydrocarbon traps within complex fault zones and offering valuable insights for their broader global application.

Suggested Citation

  • Donghui Jiang & Sujie Yan & Renhai Pu & Yunwen Guan & Xinxu Dong & Shuo Chen & Siyu Su, 2024. "Hydrocarbon Potential Assessment Methods in Complex Fault Zones: A Case Study of the Southern Pinghu Structural Belt, East China Sea," Energies, MDPI, vol. 17(24), pages 1-19, December.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:24:p:6419-:d:1548215
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    References listed on IDEAS

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    1. Sujie Yan & Xinghai Zhou & Renhai Pu & Changyu Fan, 2023. "Controls of the Sandbody Scale and Fault Throw on the Lithology and Composite Reservoir Formation in the Baoyunting Slope, East China Sea," Energies, MDPI, vol. 16(17), pages 1-25, August.
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