国家/地区 中国（5） 美国（5） 世界知识产权组织（4）
IPC部 C（10）
IPC大类 C09（10） E21（10） C08（3）
B82（2） C01（2）
IPC小类 C09K（10）
IPC C09K008/508（10）
发明人 ALMOHSIN A（2） ALSHARAEH E（2） KRISHNAN M R（2）
WANG Y（2）
公开年 2021（4） 2020（2） 2022（2） 2023（2）
申请年 2020（6）  2023（2） 
专利权人 SAUDI ARABIA.（5） ARAMCO SERVI.（4） UNIV ALFAISA.（2）

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

Pod-type degradable temporary plugging ball useful in temporary plugging treatment of oil and gas wells in fracturing system, comprises degradable outer shell (comprising e.g. polymerized product of glycolide, lactide, polybutylene succinate prepolymer) and inner core.

LI H, ZHANG Y, SHANG L, HUANG B, LIU J, WANG Y, YANG X, JIANG Q

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

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

Reduction in lost circulation in wellbore in e.g. oil industry, involves introducing fluid comprising additive of shape memory polymer into wellbore, allowing additive to expand within fractures within subsurface formation in wellbore.

SHANMUGAM S, MUSSO S

Integrated profile control and displacement agent used in crude oil production, comprises plugging agent, surfactant, nano-active agent, auxiliary agent and water.

ZHAO C, WU W, WANG Y

Self-adaptive degradable material suitable for temporary plugging and fracturing of underground reservoirs comprises degradable flexible container and degradable wiring harness encapsulated in degradable flexible container.

SHEN P, JI Y, MAO W

Reversible gel temporary plugging agent useful for water injection well, comprises e.g. starch, acrylic acid, acrylamide, chromium acetate, ammonium bisulfite, ammonium persulfate, sodium hydroxide, formaldehyde, and graphene particles.

CHEN X, WANG D, DU J, FENG S, DONG C, CHEN S, MA J, CHEN L, HAN L, ZHENG L, GENG R, HE J, XIE X, LIU Y, LI J, ZHANG Q, WANG X, LI Y, FU Z, LI X

Treatment of wellbore in geological formation for isolation of water zone, involves deploying application packer into wellbore to lower target depth, and discharging hydrogel comprising cationic polyacrylamide and graphene oxide.

ALMULHEM A A, ALMOHSIN A M