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  • 专利标题:   Use of amino acid-modified graphene oxide as coating agent in water-based drilling fluid for oil and gas drilling, which is prepared by contacting graphene oxide with amino acid in aqueous solvent in the presence of basic compound.
  • 专利号:   CN110373165-A
  • 发明人:   XIAO F, JIANG G, MA G, DENG Y, WANG K, YANG L, LI X, HUANG P, YANG Y, YU Y, GE L
  • 专利权人:   CHINA NAT PETROLEUM GROUP CHUANQING MISE, UNIV CHINA PETROLEUM BEIJING
  • 国际专利分类:   C01B032/198, C09K008/03, C09K008/16, E21B021/00
  • 专利详细信息:   CN110373165-A 25 Oct 2019 C09K-008/03 201988 Pages: 8 Chinese
  • 申请详细信息:   CN110373165-A CN10574099 28 Jun 2019
  • 优先权号:   CN10574099

▎ 摘　　要

NOVELTY - Use of amino acid-modified graphene oxide is claimed as coating agent in water-based drilling fluid, which is prepared by contacting graphene oxide with amino acid in aqueous solvent in the presence of basic compound. USE - Amino acid-modified graphene oxide is used as coating agent in water-based drilling fluid for oil and gas drilling (claimed). ADVANTAGE - The amino acid modified graphene oxide is flexible sheet layer material, which forms large-area adsorption filling on the surface of the shale, and efficiently blocks the nanopores, and at low concentrations, it exerts good performance of inhibiting clay swelling and shale dispersion.