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Performance Evaluation and Field Application of Nano Plugging Agent for Shale Water-Based Drilling Fluid

Author

Listed:
  • Minjia Jing

    (Drilling and Production Engineering Technology Research Institute, Chuanqing Drilling Engineering Co., Ltd., Guanghan 618300, China
    Sichuan Key Laboratory of Oil and Gas Field Applied Chemistry, Guanghan 618300, China)

  • Zhiping Yuan

    (Drilling and Production Engineering Technology Research Institute, Chuanqing Drilling Engineering Co., Ltd., Guanghan 618300, China
    Sichuan Key Laboratory of Oil and Gas Field Applied Chemistry, Guanghan 618300, China)

  • Xiaoyang Li

    (Chuanqing Drilling Engineering Co., Ltd., Chengdu 610500, China)

  • Jinjun Huang

    (State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China)

  • Yuexin Tian

    (State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China)

Abstract

In this paper, nano plugging agent AMPS/AM was prepared, and its plugging performance was evaluated by a microfracture simulation experiment and a shale pressure resistance experiment. The pressure loss decreased by 66.09% compared with the top pressure of 6.9 MPa, and the average core indentation hardness increased 58.12% with 3% AMPS/AM blocking mud. The experiments indicate that AMPS/AM can effectively seal the shale micropore and nanopore structure and greatly improve the stability of fractured shale well wall. The field application results of the YS129H well in the Zhaotong block show that the water-based drilling fluid with nano plugging agent AMPS/AM as the key agent has strong plugging performance. The well mud is of high temperature and pressure water loss < s4 mL, mud cake permeability reduction rate of 85.67%, which indicates that the drilling fluid system has good sealing properties and well wall stability.

Suggested Citation

  • Minjia Jing & Zhiping Yuan & Xiaoyang Li & Jinjun Huang & Yuexin Tian, 2022. "Performance Evaluation and Field Application of Nano Plugging Agent for Shale Water-Based Drilling Fluid," Energies, MDPI, vol. 15(20), pages 1-10, October.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:20:p:7529-:d:940496
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