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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Authors
Dates
1997-04-20—Published
1993-07-20—Filed