国家/地区 中国（9）
IPC部 C（9）
IPC大类 C09（9）
IPC小类 C09K（9） C01B（5）
IPC C09K008/16（9）
发明人 CHEN H（3） DENG Y（3） GONG G（3）
LI L（3） LUO C（3） ZHANG Z（3）
ZHOU C（3） CHEN J（2） LI J（2）
LIU S（2） XIE G（2） ZHANG H（2）
公开年 2023（3） 2021（2） 2022（2）
申请年 2022（4）  2021（3） 
专利权人 SINOPEC OILF.（4） DRILLING ENG.（3） UNIV SOUTHWE.（2）

High temperature and high density water-based drilling fluid useful in the field of shale well petroleum and natural gas drilling, comprises e.g. water, bentonite, tackifier, alkalinity regulator, shale inhibition stabilizer, shale plugging agent, inorganic salt and weighting material.

SHU M, WU J, XU P, HE M, YOU F, XU M

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

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

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

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

Aqueous-based drilling fluid useful for shale high temperature reservoir comprises water, sodium-based bentonite, composite metal ion polymer MMCA, hydrolyzing polyacrylonitrile ammonium salt, polyamine, white asphalt, superfine calcium carbonate and barite.

WANG Y, LV A, GUO W, WAN G, WU B, GONG H, XU C, CHEN H, ZHENG H

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

Use of amino acid-modified graphene oxide as coating agent in water-based drilling fluid for oil and gas drilling, which is prepared by contacting graphene oxide with amino acid in aqueous solvent in the presence of basic compound.

XIAO F, JIANG G, MA G, DENG Y, WANG K, YANG L, LI X, HUANG P, YANG Y, YU Y, GE L