• 专利标题:   Polymer-based elastomer plugging agent for drilling fluid, comprises polymer elastomer matrix material, reinforced polymer elastomer material, reinforcing material, functional filler and initiator which is photo or thermal initiator.
  • 专利号:   CN115772391-A
  • 发明人:   NIE Q, XIE X, ZHANG K, XIAO F, LI M, WANG M, DENG Z, ZHAO Z, CHENG K
  • 专利权人:   CHINA NAT PETROLEUM CORP, CHINA NAT PETROLEUM CORP
  • 国际专利分类:   C09K008/42
  • 专利详细信息:   CN115772391-A 10 Mar 2023 C09K-008/42 202330 Chinese
  • 申请详细信息:   CN115772391-A CN11042471 07 Sep 2021
  • 优先权号:   CN11042471

▎ 摘  要

NOVELTY - A polymer-based elastomer plugging agent comprises 50-60 %mass polymer elastomer matrix material, 1-2 %mass initiator, 0-20 %mass reinforced polymer elastomer material, 10-30 %mass reinforcing material and 10-20 %mass functional filler. The initiator is photoinitiator or thermal initiator. USE - Polymer-based elastomer plugging agent for drilling fluid. ADVANTAGE - The method can effectively solve the problem of low plugging success rate. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of polymer-based elastomer plugging agent, which involves mixing the raw materials, melting and processing using twin-screw extruder, extruding and granulating. When the initiator is photoinitiator, it is irradiated for 25-35 minutes under the light of 250-420 nm wavelength. The specific wavelength value is determined according to the maximum absorption wavelength of different photoinitiators.