国家/地区 中国（7）
IPC部 C（7）
IPC大类 C09（7）
IPC小类 C09K（7） C01B（3）
IPC C09K008/36（7）
发明人 GONG G（3） LI L（3） LUO C（3）
ZHANG Z（3） ZHOU C（3） CHEN J（2）
DENG Y（2） LI J（2） LIU S（2）
ZHANG H（2）
公开年 2022（3） 2023（3）
申请年 2022（5） 
专利权人 SINOPEC OILF.（4） DRILLING ENG.（3）

Temperature-resistant and oil-resistant composite graphite plugging agent for oil-based drilling fluid, comprises graphene oxide, modified graphene oxide, and polymer/graphene oxide with polyester, polyamide and/or polymethyl silicone resin.

LI Q

Use of high aza-graphene nanosheet for water-based drilling fluid, where water-based drilling fluid is added with high aza-graphene nanometre sheet, high aza-graphene nano sheet is prepared by premixing raw material inorganic salt, carbon-containing compound and nitrogen-containing organic compound.

GONG G, ZENG C, CHEN H, LI L, ZHANG X, ZHANG Z, WANG F, LUO C, ZHOU C

Application of high-nitrogen heterographene nanosheet in oil-based drilling fluid e.g. white oil-based drilling fluid.

LIU S, GONG G, CHEN J, LI L, DENG Y, ZHANG Z, LI J, ZHOU C, LUO C, ZHANG H

Modified cationic emulsified asphalt useful in drilling fluids, preferably high temperature and high pressure deep wells, comprises e.g. oxidized asphalt, asphalt-based graphene oxide micro-sheet, long chain fatty amine cationic emulsifier, hydroxymethyl cellulose, calcium chloride and water.

YAO Q, XU Q, LI Z, FU L

Modifying aqueous and oil-based drilling fluids by aza-graphene nanosheets involves preparing aza-graphene nano-sheet with high nitrogen content into aqueous solution and then mixing with the existing aqueous or oil-based drilling fluid, and using inorganic salts.

LIU S, GONG G, CHEN J, LI L, DENG Y, ZHANG Z, LI J, ZHOU C, LUO C, ZHANG H

Polysulfonic acid silane composite graphene oxide plugging agent useful in oil-based drilling fluid, comprises graphite, aminosilane compound, diene compound and aminosulfonic acid compound.

CHEN M, TANG R, HE Y, BAI Y, WANG R, TANG W, XIE G

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