国家/地区 中国（3）
IPC部 C（3）
IPC大类 C04（3）
IPC小类 C04B（3）
IPC
发明人 LIU J（3）
公开年 2023（3）
申请年 2021（2） 
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

Prefabricated pile comprises raw material components, quartz sand, magnesium oxide, fly ash, slag, polyether gel powder, urea and bacteria suspension.

HAN B, YAN R, WANG Z, XU X, DING Z, LI J, LIU J, NIU J, LU H, ZHU D, TANG G, FANG G, LUO H

Graphene layer complex used in the field of oil and gas well cementing, comprises graphene oxide and polymer grafted on the graphene oxide, and the polymer comprises a structural unit derived from 2-acrylamide-2-methylpropanesulfonic acid and a structural unit derived from the second monomer.

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