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Seismic Description of Deep Strike-Slip Fault Damage Zone by Steerable Pyramid Method in the Sichuan Basin, China

Author

Listed:
  • Qingsong Tang

    (PetroChina Southwest Oil & Gasfield Company, Chengdu 610051, China)

  • Shuhang Tang

    (School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, China)

  • Bing Luo

    (Chongqing Division, PetroChina Southwest Oil & Gasfield Company, Chongqing 400707, China)

  • Xin Luo

    (Chongqing Division, PetroChina Southwest Oil & Gasfield Company, Chongqing 400707, China)

  • Liang Feng

    (Chongqing Division, PetroChina Southwest Oil & Gasfield Company, Chongqing 400707, China)

  • Siyao Li

    (School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, China)

  • Guanghui Wu

    (School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, China)

Abstract

Large quantities of gas resources have been found in the Paleo-Mesozoic carbonate rocks in the Sichuan Basin. However, many wells cannot obtain high production in deep low porosity-permeability reservoirs. For this contribution, we provide a steerable pyramid method for identifying the fault damage zone in the Kaijiang–Liangping platform margin, which is infeasible by conventional seismic methods. The results show that steerable pyramid processing could enhance the seismic fault imaging and a series of NW-trending strike-slip faults are found along the trend of the carbonate platform margin. The steerable pyramid attribute presents distinct vertical and horizontal boundaries of the fault damage zone, and heterogeneous intensity of an un-through-going damage zone. The width of the fault damage zone is generally varied in the range of 100–500 m, and could be increased to more than 1000 m in the fault overlap zone, intersection area, and fault tips. Further, the fault damage zone plays a constructive role in the high gas production in the deep tight carbonate reservoir. The results suggest the steerable pyramid method is favorable for identifying the weak strike-slip faults and their damage zone. The width of the fault damage zone is closely related to fault displacement, and the much wider damage zone is generally influenced by the fault overlapping and interaction. The fractured reservoirs in the fault damage zone could be a new favorable exploitation domain in the Sichuan Basin.

Suggested Citation

  • Qingsong Tang & Shuhang Tang & Bing Luo & Xin Luo & Liang Feng & Siyao Li & Guanghui Wu, 2022. "Seismic Description of Deep Strike-Slip Fault Damage Zone by Steerable Pyramid Method in the Sichuan Basin, China," Energies, MDPI, vol. 15(21), pages 1-13, October.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:21:p:8131-:d:959516
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    References listed on IDEAS

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    1. Qinghua Wang & Yintao Zhang & Zhou Xie & Yawen Zhao & Can Zhang & Chong Sun & Guanghui Wu, 2022. "The Advancement and Challenges of Seismic Techniques for Ultra-Deep Carbonate Reservoir Exploitation in the Tarim Basin of Northwestern China," Energies, MDPI, vol. 15(20), pages 1-13, October.
    2. Rujun Wang & Jianping Yang & Lunjie Chang & Yintao Zhang & Chong Sun & Xiaoguo Wan & Guanghui Wu & Bingchen Bai, 2022. "3D Modeling of Fracture-Cave Reservoir from a Strike-Slip Fault-Controlled Carbonate Oilfield in Northwestern China," Energies, MDPI, vol. 15(17), pages 1-14, September.
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    Cited by:

    1. Xin Luo & Siqi Chen & Jiawei Liu & Fei Li & Liang Feng & Siyao Li & Yonghong Wu & Guanghui Wu & Bin Luo, 2023. "The Fractured Permian Reservoir and Its Significance in the Gas Exploitation in the Sichuan Basin, China," Energies, MDPI, vol. 16(4), pages 1-13, February.
    2. Yuanlong Wei & Lingyun Zhao & Wei Liu & Xiong Zhang & Zhijun Guo & Zhangli Wu & Shenghui Yuan, 2022. "Coalbed Methane Reservoir Parameter Prediction and Sweet-Spot Comprehensive Evaluation Based on 3D Seismic Exploration: A Case Study in Western Guizhou Province, China," Energies, MDPI, vol. 16(1), pages 1-26, December.
    3. Yawen Zhao & Guanghui Wu & Yintao Zhang & Nicola Scarselli & Wei Yan & Chong Sun & Jianfa Han, 2023. "The Strike-Slip Fault Effects on Tight Ordovician Reef-Shoal Reservoirs in the Central Tarim Basin (NW China)," Energies, MDPI, vol. 16(6), pages 1-14, March.

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