国家/地区 中国（5）
IPC部 C（5）
IPC大类 C09（5） C01（2）
IPC小类 C09K（5） C01B（2）
IPC C09K008/03（5）
发明人
公开年 2020（5）
申请年 2020（4） 
专利权人 UNIV SOUTHWE.（2）

Chitosan graphene oxide nano-hydrogel plugging agent for aqueous drilling fluid, is prepared by dissolving chitosan, graphene oxide, clay mineral and oxidized konjac in distilled water, adding persulfate, reacting, filtering and drying.

XIE G, FAN L, DENG M, LUO Y, XIAO Y

Carbon-based nano-wetting reversing agent useful in drilling fluid, comprises modified nano-graphene oxide, surfactant and solvent I.

ZHAO F, TAO Z, XU J, XU S, YU B, WANG Y

Preparing anionic polyelectrolyte modified graphene oxide used in oil and gas exploitation, involves reacting dopamine hydrochloride with anionic polyelectrolyte and graphene oxide under alkaline conditions.

FAN Y, HE Y, ZHANG T, BAI Y, MA L, WANG Z, LUO P

Drilling fluid loss reducing agent comprises starch grafted acrylamide, calcium carbonate, clay, sodium alginate and graphene oxide.

XU G, XU C, XU Y, JIANG W

Tackifier for drilling fluid, comprises viscosity-increasing agent, and dispersant, where viscosity-increasing agent is a combination of graphene-based substances, gum polymers and/or nanoparticles.

ZHANG J, LIU Z, LI G, ZHOU S, MING Y, LI H