• 专利标题:   Hydrogel plugging agent useful in aqueous drilling fluid, comprises clay minerals, aluminum borate whisker composite modified bentonite, modified nano-graphene, lubricant comprising sulfonated castor oil, tackifier comprising xanthan gum, coupling agent and deionized water.
  • 专利号:   CN116218491-A
  • 发明人:   WANG X, DUAN X, LIU S, HUANG X, ZHAO J, DAI N, ZHANG M, WANG M, ZHANG Y, YANG Y, ZHU M
  • 专利权人:   NO 2 HYDROGEOLOGY ENG GEOLOGY BRIGADE
  • 国际专利分类:   C09K008/03, C09K008/504
  • 专利详细信息:   CN116218491-A 06 Jun 2023 C09K-008/504 202356 Chinese
  • 申请详细信息:   CN116218491-A CN10514070 09 May 2023
  • 优先权号:   CN10514070

▎ 摘  要

NOVELTY - Hydrogel plugging agent comprises 40-50 pts. wt. clay minerals, 10-20 pts. wt. aluminum borate whisker composite modified bentonite, 10-20 pts. wt. modified nano-graphene, 2-5 pts. wt. lubricant, 2-5 pts. wt. tackifier, 2-6 pts. wt. coupling agent and 55-75 pts. wt. deionized water. USE - The hydrogel plugging agent is useful in aqueous drilling fluid (claimed). ADVANTAGE - The hydrogel plugging agent has excellent plugging effect and stable plugging effect under high temperature and high pressure performance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: Preparing hydrogel plugging agent, comprising (i) heating the lubricant to 210-220℃, adding tackifier into the lubricant, sending it into the clay mineral, adding deionized water and stirring; and (ii) adding aluminum borate whisker composite modified bentonite, modified nano-graphene, and coupling agent and stirring uniformly; and Aqueous drilling fluid comprises the hydrogel plugging agent.