国家/地区 中国（8） 欧洲专利局（EPO）（2） 美国（2） 世界知识产权组织（2）
IPC部 C（9）
IPC大类 C04（9）
IPC小类 C04B（9）
IPC C09K008/467（9）
发明人 LI D（2） LI F（2） LIU H（2）
LIU J（2） MIAO X（2） SANTRA A（2）
SONG B（2） ZHANG D（2） ZHANG F（2）
ZHOU S（2）
公开年 2021（5） 2022（2） 2023（2）
申请年 2020（4）  2021（4） 
专利权人 CHINA PETROL.（4） SINOPEC RES .（4） ARAMCO SERVI.（2） SAUDI ARABIA.（2）

Oil well cement retarder useful in the field of oil fields, comprises reinforcing agent, stabilizing agent, tartaric acid, sodium glucoheptonate, sodium gluconate and deionized water.

MU H, MIAO X, WEI H, LIU X, WANG M, ZHOU S, LIU J

Cement slurry system useful in drilling process in metal-free metal sleeve pipe cementing process, comprises cement, particulate aggregates, active powders, nano-filling materials, toughening materials, early strength agents, water reducers and water.

LIU K, GAO Y, MIAO X, LU P, ZHOU S, LIU R

Long-term high temperature resistant, toughened cementing and sanding cement composite material useful in oil well cementing, comprises cement, alumina, ultrafine high-purity silica sand, additives, toughening materials, water, nano iron oxide and oil well cement admixture.

CHENG G, LI H, PANG X, QIN J

Crushing ground layer plug fixing wall agent useful in crushing stratum drilling, comprises cement, cementation strengthening agent, surface modified microcapsule curing agent, interface strengthening agent and water.

ZHANG F, WANG L, ZHANG D, ZHAO S, SONG B, WANG W, CHEN Z, LI F, LI D

Well wall reinforcing composition for crushing stratum, comprises cement, cementing agent, interface strengthening agent, 1active filling agent, high temperature stabilizer, and water, where cementing agent comprises epoxy resin and epoxy resin emulsifier, plasticizer, and nanomaterials.

ZHANG D, ZHANG F, WU X, SONG B, LIU S, LIU J, LI F, LI D

Cement comprises acetylene sulfide, tricalcium silicate, tricalcium aluminate, calcium aluminoferrite, zirconium silicate, low hydration active material, reinforcing agent, anti-shrinking agent and 0early strength agent.

LIU H, ZENG X, GU A

Temperature-responsive cementing slurry comprises oil well cement, bidirectional intelligent temperature control material, mixing water, dispersant, and fluid loss agent.

HUO J, CHE Y, ZHANG C, LIU H, ZUO W, YU B

Sealing propagating cracks in sensor-laden cement sheath involves monitoring electrical resistivity of sensor-laden cement sheath to produce measured value, where sheath comprises conductive sensor, on-demand expanding agent, and cement.

MUSSO S, SANTRA A

Determining integrity of well in oil and gas industries, involves mixing conductive materials into fluid, allowing conductive materials to surface coating, and transmitting data through electrically conductive data conduit coating.

BOUL P J, SANTRA A