国家/地区 中国（2）
IPC部 C（3）
IPC大类 C09（3） C08（2） E21（2）
IPC小类 C09K（3） C08K（2） E21B（2）
IPC C09K008/508（3）
发明人
公开年 2023（3）
申请年 2023（2） 
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

Preparing polymer-sand nanocomposite lost circulation material for forming barrier to overcome lost circulation in hydrocarbon wellbore, involves combining cross-linker solution and sand particles; combining hydrogel polymer, organic cross-linker and salt; and combining polymer hydrogel.

KRISHNAN M R, ALSHARAEH E, ALMOHSIN A

Preparation of polymer microspheres/graphene oxide emulsion used for stripping oil, involves emulsifying and polymerizing by dissolving aqueous phase, pouring into oil phase obtained from oil medium, passing inert gas and adding reducing agent.

YU Z, LI Z, ZHOU S, YANG D