COMPLEX ADDITION TO GROUTING MORTAR BASED ON PORTLAND CEMENT Russian patent published in 1997 - IPC

Abstract RU 2074310 C1

FIELD: well drilling, casing oil and gas wells. SUBSTANCE: complex addition to grouting mortar based on Portland cement has carboxymethyl cellulose and commercial sodium sulfate that is the waste of sebacic acid production. The acid is produced by neutralization of salts of fatty acids of sulfuric acid. Initial ingredients are as follows (% by weight): 17.3 - 50.0 carboxylmethyl cellulose, 50.0 - 82.7 sodium sulfate of commercial grade. EFFECT: decreased water separation.

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RU 2 074 310 C1

Authors

Mosienko V.G.

Petrakov Ju.I.

Nagornova V.F.

Nikiforova V.N.

Dates

1997-02-27—Published

1992-05-15—Filed