METHOD FOR TREATING A SEAM WITH AN ACID Russian patent published in 1997 - IPC

Abstract RU 2077669 C1

FIELD: well drilling, oil production. SUBSTANCE: first inside the piping is pumped a buffer film generating solution of diesel fuel with inhibiting addition against hydrochloride corrosion. The corrosion inhibitor consists of a mixture of amines with long carbon chain C12-C15 and impurities of the initial paraffin in methanol solution derived from paraffins of oil origin. Than inhibited hydrochloric acid is pumped in with additional inhibitor against hydrochloride corrosion. Than driving fluid is pumped in. EFFECT: higher productivity. 1 tbl

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RU 2 077 669 C1

Authors

Petrov Nikolaj Aleksandrovich

Esipenko Alla Illarionovna

Dates

1997-04-20Published

1993-07-20Filed