国家/地区 中国（5）
IPC部 C（5）
IPC大类 C09（5）
IPC小类 E21B（5）
IPC
发明人
公开年 2023（5）
申请年 2022（4） 
专利权人

Liquid bridge plug useful for segmented water plugging in horizontal-wells or layered water plugging in vertical-wells, comprises e.g. methacrylamide, galactomannanase, polyacrylamide, N, N-methylenebisacrylamide, thiourea, graphene oxide, and sodium chloride.

TONG J

Composition useful for conductive propping agent, comprises aggregate core, high molecular material, conductive agent, curing agent and surface modifying agent, where high molecular material includes thermoplastic resin and water-soluble high molecular material.

NIU Y, ZHOU Y, LIU F, LI Y, XU Q

Oil-displacing agent comprises graphene oxide-carbon nanotube compound, where graphene oxide-carbon nanotube composite is sheet-fibrous composite structure, and prepared by mixing graphene oxide powder and carbon nanotube powder, stirring and grinding in powder state to obtain mixed powder.

LU X, WANG M

Preparation of high-performance thread used in oil and gas application, by processing steel threads, spraying polyurea elastomer on surface of external thread, curing polyurea elastomer, applying long-chain polymer glue on surface of thread and spraying solid lubricating particles on polymer glue.

SI X, WANG K, LI H, FANG X, YANG T, LV S, LUO Y, ZHANG X, NAN B, YANG Z, TUO C, ZHANG Y

Reducing friction and torsion of water-based drilling fluid involves pumping thick slurry to well bottom, well washing, pumping slurry containing first liquid lubricant, to well bottom, pumping well mud containing solid lubricant to well bottom, drilling, where well mud supplements second lubricant.

HE M, XU P, YOU F, HUANG Z, WANG T, WU Y, XU M, BAN G