国家/地区 中国（11）
IPC部 C（11）
IPC大类 C09（11） C01（5） C08（4）
IPC小类 C09K（11） C01B（5） C08F（3）
IPC C09K008/03（11）
发明人 BAI Y（4） LUO C（4） XIE G（4）
GONG G（3） LI L（3） TANG W（3）
WANG R（3） ZHANG Z（3） ZHOU C（3）
CHEN J（2） CHEN M（2） DENG Y（2）
HE Y（2） LI J（2） LIU S（2）
公开年 2022（7） 2023（4）
申请年 2022（11）
专利权人 SINOPEC OILF.（4） UNIV SOUTHWE.（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

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

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

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

Anti-collapse drilling fluid useful in oil and gas drilling, comprises base oils, organic soils, emulsifiers, plugging and anti-slump agents, fluid loss control agents, inhibitors, pH regulators, weighting agents and flow regulators, where anti-slump agent comprises inorganic rigid particles.

DAI F, LI W, HUANG D, XIE G, LUO P, LI D, BAI Y

Polyacrylate-grafted graphene oxide plugging agent useful in oil-based drilling fluid, comprises graphene oxide, aminosilane compound, acrylate compound, and acrylamide compound.

TANG W, BAI Y, HUANG J, WANG R, XIE G

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

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