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3D Modeling of Fracture-Cave Reservoir from a Strike-Slip Fault-Controlled Carbonate Oilfield in Northwestern China

Author

Listed:
  • Rujun Wang

    (PetroChina Tarim Oilfield Company, Korla 841000, China)

  • Jianping Yang

    (PetroChina Tarim Oilfield Company, Korla 841000, China)

  • Lunjie Chang

    (PetroChina Tarim Oilfield Company, Korla 841000, China)

  • Yintao Zhang

    (PetroChina Tarim Oilfield Company, Korla 841000, China)

  • Chong Sun

    (PetroChina Tarim Oilfield Company, Korla 841000, China)

  • Xiaoguo Wan

    (PetroChina Tarim Oilfield Company, Korla 841000, China)

  • Guanghui Wu

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

  • Bingchen Bai

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

Abstract

A giant strike-slip fault-controlled Fuman Oilfield has been found in the Ordovician fractured carbonates of the Tarim Basin. However, conventional seismic methods are hardly able to distinguish the fractured reservoir and its connectivity in the ultra-depth (>7000 m) carbonate fault zones. We propose thin-likelihood and tensor-thickness process methods to describe the fracture network and large cave reservoir, respectively. Together with the two methods for 3D visualization of fracture-cave reservoirs, we had an application in the ultra-deep well deployment in Fuman Oilfield. The results show that the fracture network and cave reservoir can be 3D-imaged more clearly than conventional methods. The fracture network and cave reservoir show distinct segmentation by the fault assemblage in Fuman Oilfield. Furthermore, 3D modeling is favorable for the reservoir connectivity description along the carbonate fault zones. There are three distinct reservoir models: fault core-, fault damage zone- and overlap zone-controlling fractured reservoirs along the fault zones. This revealed variable fractured reservoirs that are related to fault maturity and segmentation. The method has been widely used in fracture-cave reservoir description and subsequent well optimization, suggesting a favorable method for economic oil exploitation in the ultra-depth reservoirs. This case study is not only useful for the complicated reservoir 3D description and modeling but also helpful for well employment to provide support for the target evaluation and optimization in ultra-depth fractured reservoirs.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:17:p:6415-:d:904887
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    References listed on IDEAS

    as
    1. Guoping Liu & Lianbo Zeng & Chunyuan Han & Mehdi Ostadhassan & Wenya Lyu & Qiqi Wang & Jiangwei Zhu & Fengxiang Hou, 2020. "Natural Fractures in Carbonate Basement Reservoirs of the Jizhong Sub-Basin, Bohai Bay Basin, China: Key Aspects Favoring Oil Production," Energies, MDPI, vol. 13(18), pages 1-23, September.
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    Cited by:

    1. 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.
    2. Zhipeng Sun & Ruizhao Yang & Feng Geng & Li Wang & Lingda Wang & Jialiang Guo, 2023. "Analyzing the Formation and Evolution of Strike-Slip Faults and Their Controlling Effects on Hydrocarbon Migration and Charging: A Case Study of Tahe Area, Tarim Basin," Energies, MDPI, vol. 16(5), pages 1-29, March.
    3. 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.
    4. 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.

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