国家/地区 美国（10） 中国（7） 世界知识产权组织（5）
IPC部 C（17）
IPC大类 C09（17）
IPC小类 C09K（17）
IPC C09K008/512（17）
发明人 ALSHARAEH E（8） ALMOHSIN A（6） BATAWEEL M A（4）
AHMED F（2） ALMOHSIN A M（2） HUANG J（2）
KRISHNAN M R（2） LI W（2） LIANG F（2）
MICHAEL F M（2） SHI J（2）
公开年 2021（7） 2020（3） 2022（3） 2023（3）
申请年 2020（10）  2021（3）  2023（2） 
专利权人 SAUDI ARABIA.（10） UNIV ALFAISA.（6） ARAMCO SERVI.（5）

Liquid bridge plug useful for segmented water plugging in horizontal-wells or layered water plugging in vertical-wells, comprises e.g. methacrylamide, galactomannanase, polyacrylamide, N, N-methylenebisacrylamide, thiourea, graphene oxide, and sodium chloride.

TONG J

Preparing polymer-sand nanocomposite lost circulation material for forming barrier to overcome lost circulation in hydrocarbon wellbore, involves combining cross-linker solution and sand particles; combining hydrogel polymer, organic cross-linker and salt; and combining polymer hydrogel.

KRISHNAN M R, ALSHARAEH E, ALMOHSIN A

Preparation of polymer microspheres/graphene oxide emulsion used for stripping oil, involves emulsifying and polymerizing by dissolving aqueous phase, pouring into oil phase obtained from oil medium, passing inert gas and adding reducing agent.

YU Z, LI Z, ZHOU S, YANG D

Forming a barrier to overcome lost circulation in a subterranean formation involves injecting a polymer-sand nanocomposite into one or more lost circulation zones in the subterranean formation, and polymer-sand nanocomposite comprising sand mixed with a polymer hydrogel.

KRISHNAN M R, ALSHARAEH E, ALMOHSIN A

Forming barrier that is used for eliminating or reducing unwanted production of water in subterranean formation, involves injecting polymer-sand nanocomposite into one or more water producing fractures in subterranean formation.

BATAWEEL M A, ALSHARAEH E, ALMOHSIN A

Preparing high-strength temporary plugging agent capable of realizing well zone seepage, involves dispersing hydrophilic nanomaterial, ultrasonicating with glycerol allyl ether monomer, stirring with acrylamide monomer, and reacting with N,N'-methylenebisacrylamide, acrylate compound and initiator.

WANG Z, YU S, AN Y, CAI W, SHI J

Graphene oxide Janus nanosheet relatively permeability modifier for reducing water permeability in carbonate formation, comprises graphene oxide nanosheet having first and second sides, first and second alkyl groups and functional group.

LI W, LIANG F, HUANG J

Graphene oxide Janus nanosheet crosslinker for carbonate formations, comprises graphene oxide nanosheet has first side and second side, alkyl group bonded to the first side.

LI W, LIANG F, HUANG J

Preparing polymer-sand nanocomposite comprises applying surface polymerization to surface of sand particles by combining polymerization initiator dissolved in solvent with the sand particles to form precursor sand mixture.

BATAWEEL M A, ALSHARAEH E, ALMOHSIN A

Polymer composite hydrogel for water shutoff, comprises polymer composite, water, organic crosslinker, and salt, where polymer composite comprises nanosheet filler dispersed throughout polymerized polyacrylamide.

MICHAEL F M, ALSHARAEH E, ALMOHSIN A