Patent ID: 11926787
Assignee: CNPC ENGINEERING TECHNOLOGY R & D COMPANY LIMITED
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  E  Y | IPC C  E

Claim 3:
4. The well cementing method according to claim 3, wherein the accelerating early strength agent includes one of, or a combination of two or more of: sodium chloride, sodium carbonate, sodium formate, sodium nitrite, calcium chloride, calcium formate, calcium sulfate, calcium metasilicate, sodium aluminate, metakaolin, magnesium trisilicate, magnesium oxide, strontium sulfate, strontium carbonate, strontium nitrate, lithium carbonate, gypsum, hemihydrate gypsum, dihydrate gypsum, magnesium oxide, calcium oxide, activated slag, and ultra-fine cement.