国家/地区 中国（2）
IPC部 B（2）
IPC大类 E21（2）
IPC小类 E21B（2）
IPC
发明人 ZHANG X（2）
公开年 2023（2）
申请年 2022（2）
专利权人

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

Preparing composite weakly-gel material in oil displacement agent for oil field development, involves uniformly dispersing graphene oxide in aqueous solvent to obtain graphene oxide suspension and adding partially hydrolyzed polyacrylamide to the graphene oxide suspension.

WANG N, YAO Y, ZHANG X