国家/地区 中国（7）
IPC部 C（7）
IPC大类 C09（7）
IPC小类 C09K（7）
IPC C09K008/03（7）
发明人 FU L（2） XIE G（2） YAO Q（2）
公开年 2022（4） 2021（3）
申请年 2021（7）
专利权人 CHINA PETROL.（3） CHINA PETROL.（2） UNIV SOUTHWE.（2）

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

Modified emulsified asphalt useful for aqueous drilling fluids, preferably high temperature and high-pressure deep wells, comprises e.g. oxidized asphalt, aminated graphene micro-sheet, terpene resin, hexadecyltrimethylammonium chloride, hydroxymethyl cellulose, calcium chloride, and water.

YAO Q, WU X, WANG K, FU L

Oil-based asphalt resin anti-slouting agent comprises asphalt, fuming sulfuric acid, petroleum resin, water-soluble starch, acrylamide, crosslinker and lignite resin.

LU X, CAO H

Preparing modified nano-graphene slurry anti-slump agent useful in micro-fracture pores developed in basalt comprises carrying first contact between nano-graphene and mixed acid, adding potassium chlorate to mixed solution for modification treatment and contacting modified nano-graphene with water.

LI W, DAI F, XIE G, LUO P, ZHANG J, LIU D, BAI Y

Composition useful e.g. for inhibiting hydrate decomposition, comprises starch-based surfactant including carboxymethyl starch salt and alkyl glycoside surfactants.

YAN K, XIAO A, MU S, HU X, REN Y, ZHANG H, LIN Y, LV C, WANG Q

Preparation of nano-micro-emulsion plugging agent used for drilling fluid, by dispersing powder in deionized water, adding hydroxyethyl cellulose, modified graphene and chitosan nano gel, stirring, adding and liquid paraffin and heating.

CHEN H

Externally-flexible internal rigid oil-based drilling fluid nano-plugging agent used in oil-based drilling fluid, comprises nano-rigid material, benzene ring monomer, olefin containing carbon-carbon double bond and sodium methallyl sulfonate.

XIE G, LEI Z, DENG M, LUO Y, FAN L, CHEN Y, CAO S, HUANG G, GU S, WANG R