IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v17y2024i24p6438-d1548808.html
   My bibliography  Save this article

Identification of Strike-Slip Faults and Their Control on the Permian Maokou Gas Reservoir in the Southern Sichuan Basin (SW China): Fault Intersections as Hydrocarbon Enrichment Zones

Author

Listed:
  • Jiawei Liu

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

  • Guanghui Wu

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

  • Hai Li

    (Shunan Gas Field, PetroChina Southwest Oil & Gasfield Company, Luzhou 646000, China)

  • Wenjin Zhang

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

  • Majia Zheng

    (Shunan Gas Field, PetroChina Southwest Oil & Gasfield Company, Luzhou 646000, China)

  • Hui Long

    (Shunan Gas Field, PetroChina Southwest Oil & Gasfield Company, Luzhou 646000, China)

  • Chenghai Li

    (Shunan Gas Field, PetroChina Southwest Oil & Gasfield Company, Luzhou 646000, China)

  • Min Deng

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

Abstract

The Middle Permian Maokou Formation carbonate rocks in the southern Sichuan Basin are import targets for hydrocarbon exploration, with numerous gas fields discovered in structural traps. However, as exploration extends into slope and syncline zones, the limestone reservoirs become denser, and fluid distribution becomes increasingly complex, limiting efficient exploration and development. Identifying the key factors controlling natural gas accumulation is therefore critical. This study is the first to apply deep learning techniques to fault detection in the southern Sichuan Basin, identifying previously undetected WE-trending subtle strike-slip faults (vertical displacement < 20 m). By integrating well logging, seismic, and production data, we highlight the primary factors influencing natural gas accumulation in the Maokou Formation. The results demonstrate that 80% of production comes from less than 30% of the well, and that high-yield wells are strongly associated with faults, particularly in slope and syncline zones where such wells are located within 200 m of fault zones. The faults can increase the drilling leakage of the Maokou wells by (7–10) times, raise the reservoir thickness to 30 m, and more than double the production. Furthermore, 73% of high-yield wells are concentrated in areas of fault intersection with high vertical continuity. Based on these insights, we propose four hydrocarbon enrichment models for anticline and syncline zones. Key factors controlling gas accumulation and high production include fault intersections, high vertical fault continuity, and local structural highs. This research demonstrates the effectiveness of deep learning for fault detection in complex geological settings and enhances our understanding of fault systems and carbonate gas reservoir exploration.

Suggested Citation

  • Jiawei Liu & Guanghui Wu & Hai Li & Wenjin Zhang & Majia Zheng & Hui Long & Chenghai Li & Min Deng, 2024. "Identification of Strike-Slip Faults and Their Control on the Permian Maokou Gas Reservoir in the Southern Sichuan Basin (SW China): Fault Intersections as Hydrocarbon Enrichment Zones," Energies, MDPI, vol. 17(24), pages 1-19, December.
  • Handle: RePEc:gam:jeners:v:17:y:2024:i:24:p:6438-:d:1548808
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/17/24/6438/pdf
    Download Restriction: no

    File URL: https://www.mdpi.com/1996-1073/17/24/6438/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Bing He & Yicheng Liu & Chen Qiu & Yun Liu & Chen Su & Qingsong Tang & Weizhen Tian & Guanghui Wu, 2023. "The Strike-Slip Fault Effects on the Ediacaran Carbonate Tight Reservoirs in the Central Sichuan Basin, China," Energies, MDPI, vol. 16(10), pages 1-12, May.
    2. Xiao He & Guian Guo & Qingsong Tang & Guanghui Wu & Wei Xu & Bingshan Ma & Tianjun Huang & Weizhen Tian, 2022. "The Advances and Challenges of the Ediacaran Fractured Reservoir Development in the Central Sichuan Basin, China," Energies, MDPI, vol. 15(21), pages 1-14, November.
    3. 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.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    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. 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.
    3. Lixin Chen & Zhenxue Jiang & Chong Sun & Bingshan Ma & Zhou Su & Xiaoguo Wan & Jianfa Han & Guanghui Wu, 2023. "An Overview of the Differential Carbonate Reservoir Characteristic and Exploitation Challenge in the Tarim Basin (NW China)," Energies, MDPI, vol. 16(15), pages 1-14, July.
    4. Bing He & Yicheng Liu & Chen Qiu & Yun Liu & Chen Su & Qingsong Tang & Weizhen Tian & Guanghui Wu, 2023. "The Strike-Slip Fault Effects on the Ediacaran Carbonate Tight Reservoirs in the Central Sichuan Basin, China," Energies, MDPI, vol. 16(10), pages 1-12, May.
    5. 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.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:17:y:2024:i:24:p:6438-:d:1548808. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.