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Application

4126316/03, 1986-09-30

(22)

Actual filing date

1986-09-30

(45)

Published

1997-09-20

(72)

Inventor

Pishchenko L.I.Rusin V.B.Ermolov A.M.Tsekhanovich M.S.

METHOD OF REMOVING ASPHALT-TAR-PARAFFIN DEPOSITS Russian patent published in 1997 - IPC

Abstract SU 1453882 A1

FIELD: oil and gas production. SUBSTANCE: deposit-removing solvent composition contains 25- 75 wt % of hexane fraction and 25-75 wt % of light pyrolysis tar. Solvent is mixed with deposits under cavitation flow conditions with Reynolds number from 2×105 to 6×106.. EFFECT: enhanced efficiency of deposit removal with no repeated formation of deposits. 5 tbl

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SU 1 453 882 A1

Authors

Pishchenko L.I.

Rusin V.B.

Ermolov A.M.

Tsekhanovich M.S.

Dates

1997-09-20—Published

1986-09-30—Filed

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