Volume 41 Issue 6
Nov.  2024
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XIA Haiying, YANG Li, CHEN Zhihui.Development of self-adaptive plugging material for drilling fluid[J]. Drilling Fluid & Completion Fluid，2024, 41（6）：742-746 doi: 10.12358/j.issn.1001-5620.2024.06.006
Citation: XIA Haiying, YANG Li, CHEN Zhihui.Development of self-adaptive plugging material for drilling fluid[J]. Drilling Fluid & Completion Fluid，2024, 41（6）：742-746 doi: 10.12358/j.issn.1001-5620.2024.06.006
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Development of Self-adaptive Plugging Material for Drilling Fluid

doi: 10.12358/j.issn.1001-5620.2024.06.006

  • Petroleum Engineering Technology Institute of Southwest Petroleum Branch, Sinopec, Deyang, Sichuan 618000

  • Received Date: 2024-07-05
  • Rev Recd Date: 2024-08-10
  • Publish Date: 2024-11-30
    Abstract
  • In view of the fact that the characteristics of the easy-to-leak formation are not accurately grasped during the plugging process, the self-adaptive ability of the field plugging material is poor, and it is easy to cause the bad plugging effect and the repeated leakage after plugging. Through the optimization of the deformable material and the use of the characteristics of the rigid plugging material, a screw extruder is used to coat the deformable material on the surface of the rigid plugging material to achieve the effective combination of the two, an adaptive plugging material with good compression resistance and elasticity has been developed. The temperature resistance reaches 170 ℃, it can deform without breaking under 69 MPa pressure and the springback rate reaches 80% after the pressure is removed. The self-adaptive plugging formula can effectively plug the changing seam width of 1mm-6mm with less leakage and pressure bearing capacity of 6 MPa.

     

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