国家/地区 中国（4）
IPC部 C（6）
IPC大类 C09（6） C08（3） E21（2）
IPC小类 C09K（6） C08F（2） C08K（2）
E21B（2）
IPC C09K008/508（6）
发明人
公开年 2023（6）
申请年 2022（3）  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

Raw material composition useful in preparing fluid loss control agent for drilling fluid, comprises e.g. prop-2-enamide, prop-2-enamidomethanesulfonic acid compound, bis(prop-2-en-yl)amine chloride compound, sodium 4-ethenylbenzene-1-sulfonate compound and modified graphene oxide.

LAN Q, ZHAO H, YAN B, LI X, WANG X, WANG B, LI Q

Well fluid used for e.g. subterranean/geothermal well system for carrying out well operation in subterranean well having downhole supercritical temperature zone, comprises resin component, curing agent and nanocomposite filler, and is stable at preset temperature and pressure.

SZUTIAK G, BURTS D, VIATOR M

Flame retardant antistatic large deformation spraying plugging air leakage material comprises polymer emulsion, inorganic filler, flame retardant, graphene, antistatic agent and admixture.

BI Y, CHEN X, DONG M, ZHU X, WANG R, ZHAN X

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