国家/地区 中国（2）
IPC部 C（2）
IPC大类 C04（2）
IPC小类 C04B（2） C09K（2）
IPC C04B028/00（2）
发明人
公开年 2022（2）
申请年
专利权人

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