Volume 39 Issue 5
Jan.  2023
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FENG Jie, ZANG Xiaoyu, QIU Zhengsong, et al.Characteristic study of thermosensitive shape memory lost circulation materials[J]. Drilling Fluid & Completion Fluid，2022, 39（5）：545-549 doi: 10.12358/j.issn.1001-5620.2022.05.003
Citation: FENG Jie, ZANG Xiaoyu, QIU Zhengsong, et al.Characteristic study of thermosensitive shape memory lost circulation materials[J]. Drilling Fluid & Completion Fluid，2022, 39（5）：545-549 doi: 10.12358/j.issn.1001-5620.2022.05.003
shu

Characteristic Study of Thermosensitive Shape Memory Lost Circulation Materials

doi: 10.12358/j.issn.1001-5620.2022.05.003
  • 1.

    School of Petroleum Engineering, China University of Petroleum (Beijing), Beijing 102249

  • 2.

    CNPC Engineering Technology R&D Company Limited, Beijing 102206

  • 3.

    School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580

  • Received Date: 2022-03-15
  • Rev Recd Date: 2022-04-19
  • Publish Date: 2023-01-10
    Abstract
  • In order to improve the self-adaptability and plugging efficiency of bridging materials and increase the success rate of plugging fractured formation, this paper develops a kind of thermosensitive shape memory lost circulation materials. By crushing and granulating, shape memory particles with different sizes were obtained. Evaluation experiments show that the mechanical properties and shape memory performance of thermosensitive shape memory lost circulation materials are preferable, and the particle size growth rate under high temperature activation is more than 55%. The simulation experiments of fracture plugging show that the temperature has a significant influence on the plugging effect, and the plugging effect of thermosensitive shape memory lost circulation materials is better than that of traditional bridging materials under high temperature. Building a set of formula of plugging fluid with strong self-adaptability, it can successfully plug 3-5 mm coexisting fractures, achieving adaptive and high-efficiency plugging.

     

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