国家/地区 中国（4）
IPC部 C（4）
IPC大类 C04（4）
IPC小类 C04B（4）
IPC C09K008/467（4）
发明人 LIU H（2） MIAO X（2） ZHOU S（2）
公开年 2021（2） 2023（2）
申请年 2021（4）
专利权人 CHINA PETROL.（2） SINOPEC RES .（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

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