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Numerical Evaluation and Optimization of Multiple Hydraulically Fractured Parameters Using a Flow-Stress-Damage Coupled Approach

Author

Listed:
  • Yu Wang

    (Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China)

  • Xiao Li

    (Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China)

  • Ruilin Hu

    (Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China)

  • Chaofeng Ma

    (Institute of Railway Engineering, China Academy of Railway Sciences, Beijing 100081, China)

  • Zhiheng Zhao

    (Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China)

  • Bo Zhang

    (Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China)

Abstract

Multiple-factor analysis and optimization play a critical role in the the ability to maximizethe stimulated reservoir volume (SRV) and the success of economic shale gas production. In this paper, taking the typical continental naturally fractured silty laminae shale in China as anexample, response surface methodology (RSM) was employed to optimize multiple hydraulic fracturing parameters to maximize the stimulated area in combination with numerical modeling based on the coupled flow-stress-damage (FSD) approach. This paper demonstrates hydraulic fracturing effectiveness by defining two indicesnamelythe stimulated reservoir area (SRA) and stimulated silty laminae area (SLA). Seven uncertain parameters, such as laminae thickness, spacing, dip angle, cohesion, internal friction angle (IFA), in situ stress difference (SD), and an operational parameter-injection rate (IR) with a reasonable range based on silty Laminae Shale, Southeastern Ordos Basin, are used to fit a response of SRA and SLA as the objective function, and finally identity the optimum design under the parameters based on simultaneously maximizingSRA and SLA. In addition, asensitivity analysis of the influential factors is conducted for SRA and SLA. The aim of the study is to improve the artificial ability to control the fracturing network by means of multi-parameteroptimization. This work promises to provide insights into the effective exploitation of unconventional shale gas reservoirs via optimization of the fracturing design for continental shale, Southeastern Ordos Basin, China.

Suggested Citation

  • Yu Wang & Xiao Li & Ruilin Hu & Chaofeng Ma & Zhiheng Zhao & Bo Zhang, 2016. "Numerical Evaluation and Optimization of Multiple Hydraulically Fractured Parameters Using a Flow-Stress-Damage Coupled Approach," Energies, MDPI, vol. 9(5), pages 1-19, April.
    • Handle: RePEc:gam:jeners:v:9:y:2016:i:5:p:325-:d:69036
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    Citations

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    Cited by:

    1. Zhiheng Zhao & Xiao Li & Yu Wang & Bo Zheng & Bo Zhang, 2016. "A Laboratory Study of the Effects of Interbeds on Hydraulic Fracture Propagation in Shale Formation," Energies, MDPI, vol. 9(7), pages 1-13, July.
    2. Shikuo Chen & Chenhui Wei & Tianhong Yang & Wancheng Zhu & Honglei Liu & Pathegama Gamage Ranjith, 2018. "Three-Dimensional Numerical Investigation of Coupled Flow-Stress-Damage Failure Process in Heterogeneous Poroelastic Rocks," Energies, MDPI, vol. 11(8), pages 1-16, July.
    3. Jia Liu & Jianguo Wang & Chunfai Leung & Feng Gao, 2018. "A Multi-Parameter Optimization Model for the Evaluation of Shale Gas Recovery Enhancement," Energies, MDPI, vol. 11(3), pages 1-29, March.
    4. Yue Li & Jianye Mou & Shicheng Zhang & Xinfang Ma & Cong Xiao & Haoqing Fang, 2022. "Numerical Investigation of Interaction Mechanism between Hydraulic Fracture and Natural Karst Cave Based on Seepage-Stress-Damage Coupled Model," Energies, MDPI, vol. 15(15), pages 1-17, July.
    5. Haiyang Wang & Binwei Xia & Yiyu Lu & Tao Gong & Rui Zhang, 2017. "Study on the Propagation Laws of Hydrofractures Meeting a Faulted Structure in the Coal Seam," Energies, MDPI, vol. 10(5), pages 1-17, May.

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