国家/地区 中国（12）
IPC部 C（12）
IPC大类 C08（12）
IPC小类 C09K（12）
IPC C09K008/03（12）
发明人 CHEN M（3） AN Y（2） BAI Y（2）
FU L（2） HE Y（2） MA J（2）
TANG R（2） TANG W（2） WANG R（2）
XIE G（2）
公开年 2022（5） 2023（2）
申请年 2022（4）  2020（3） 
专利权人 CHINA PETROL.（2） UNIV CHINA G.（2） UNIV SOUTHWE.（2）

New amphiphobic polymer containing acyl hydrazone bond useful for preparing nano-amphiphobic reversal agent containing an acyl hydrazone bond polymer for forming a wet adsorption layer on the surface of the formation core.

ZHANG C, LIANG S, CHEN M, XU N, LI D, SHI W, WANG Y

Preparing powdery, drag reducing agent for drilling fluid, involves adding modified graphite powder and rubber powder to mixture of styrene, catalyst and crosslinking agent, polymerizing formed mixture with polymer, where weight ratio of styrene, graphite powder, rubber and polymer used, is preset.

LI Y, XIE L, ZHU G, XIA H, ZENG Y, QIN B, YE L, LUO C, LIU Y, ZHAO S, YANG J, LIU H, LI S

Plugging type fluid loss agent for oil-based drilling fluid, comprises oxidized graphene, concavo-convex rod-shaped stone, initiator, silane coupling agent, cross-linking agent, matrix asphalt and aggregate monomer, aggregate monomer is synthesized by acrylamide and acrylic acid.

YUAN X, WU L, SHI 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

Terminal amino hyperbranched polymer graft graphene oxide plugging agent useful for drilling fluid, comprises graphene oxide, acrylate compound e.g. butyl acrylate, amine compound e.g. ethylenediamine, epichlorohydrin and cellulose e.g. ethyl cellulose.

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

Functionalized graphene oxide plugging agent comprises graphene oxide, styrene, acrylate compound, persulfate, acrylic acid compound, sodium dodecyl sulfate, aminosilane compound, nonylphenol polyoxyethylene ether, and is prepared by mixing raw material into reactor filled with distilled water.

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

Modified asphalt particles useful in high temperature aqueous drilling fluid, comprise base asphalt, aminated graphene microsheet, rubber powder, reaction accelerator, and additive.

WU X, GUO X, GUO J, FU L

Preparing carboxy modified graphene graft polymer used as fluid loss agent in drilling fluids for oil and gas drilling comprises dissolving e.g. N-vinylpyrrolidone in water, adding inverse emulsion system, purifying and crushing pre-product.

MA J, AN Y, PANG S, ZHANG Z, ZHANG R

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

Preparing high temperature resistant long-acting fluid loss reducing agent comprises e.g. mixing graphene oxide with N-methylpyrrolidone, carrying sealed ultrasonic dispersion to obtain graphene oxide dispersion,.

PEI W, LIU X