Title:
METHOD FOR CLEARING DEPOSITS FROM THE INNER SURFACE OF A PIPELINE AND APPLYING PROTECTIVE COATING THERETO
Document Type and Number:
WIPO Patent Application WO/1987/001058
Kind Code:
A1
Abstract:
A method for clearing deposits from the inner surface of a pipeline and applying a protective coating to it consists in clearing deposits from the surface, treating it with a corrosion inhibitor solution forming a coating on the surface of the pipeline and subsequent treatment with an inhibitor solution which preserves the coating. The clearing of the inner surface of the pipeline is effected with liquid jets creating a pressure differential from the base of the deposits towards their surface and thus removing the major part of the deposition layer whereas the remaining part of the deposition layer is simultaneously saturated with the corrosion inhibitor solution which is contained in that liquid and forms the coating or treated with a corrosion activating solution with subsequent saturation of the layer with the corrosion inhibitor solution forming the coating.
Inventors:
SHISHKIN VIKTOR VASILIEVICH (SU)
CHEREBEDOV DMITRY NIKOLAEVICH (SU)
KRYAZHEVSKIKH NIKOLAI FEDOROVI (SU)
PANCHENKO VALERY PAVLOVICH (SU)
LUKIN EVGENY GEORGIEVICH (SU)
SOKOL PETR GRIGORIEVICH (SU)
CHERNYAI ALEXANDR IVANOVICH (SU)
KAPRALOVA VIKTORIA IGOREVNA (SU)
SULEKOVA LIDIA STEPANOVNA (SU)
SUSHKOV YAROSLAV PETROVICH (SU)
CHEREBEDOV DMITRY NIKOLAEVICH (SU)
KRYAZHEVSKIKH NIKOLAI FEDOROVI (SU)
PANCHENKO VALERY PAVLOVICH (SU)
LUKIN EVGENY GEORGIEVICH (SU)
SOKOL PETR GRIGORIEVICH (SU)
CHERNYAI ALEXANDR IVANOVICH (SU)
KAPRALOVA VIKTORIA IGOREVNA (SU)
SULEKOVA LIDIA STEPANOVNA (SU)
SUSHKOV YAROSLAV PETROVICH (SU)
Application Number:
PCT/SU1985/000070
Publication Date:
February 26, 1987
Filing Date:
August 16, 1985
Export Citation:
Assignee:
TREST JUZHVODOPROVOD (SU)
International Classes:
B08B9/032; C09K8/536; C09K8/54; E21B41/02; F16L58/02; (IPC1-7): B08B9/02; C23F11/08; C23G1/02; F16L58/02
Foreign References:
| SU1018729A1 | 1983-05-23 | |||
| US3973056A | 1976-08-03 | |||
| SU671882A1 | 1979-07-05 | |||
| SU488631A1 | 1975-10-25 |
Other References:
A.I. ALTSYBEEVA, S.Z. LEVIN, "Ingibitory Korrozii Metallov", 1968, KHIMIA (LENINGRAD), p.p. 108-109, 115-117.
REFERATIVNY ZHURNAL, 66, Korrozia I Zaschita Ot Korrozii, Otdelny Vypusk N8, 1977, (Viniti, Moscow, USSR), BUSCH U., "Korrosionsschutz in Zentralen Gebrauchswarmwasser-Versorgungsanlagen", No. 8K408; & "Stadt-und Gebaeudetechn", 1977, 31, No. 2, p. 55-56 (Germ.).
I.V. STRIZHEVSKY, M.A. SURIS, "Zaschita Podzemnykh Teploprovodov ot Korrozii", 1983, ENERGOATOMIZDAT (MOSCOW), p.p. 206-209.
REFERATIVNY ZHURNAL, 66, Korrozia I Zaschita Ot Korrozii, Otdelny Vypusk N8, 1977, (Viniti, Moscow, USSR), BUSCH U., "Korrosionsschutz in Zentralen Gebrauchswarmwasser-Versorgungsanlagen", No. 8K408; & "Stadt-und Gebaeudetechn", 1977, 31, No. 2, p. 55-56 (Germ.).
I.V. STRIZHEVSKY, M.A. SURIS, "Zaschita Podzemnykh Teploprovodov ot Korrozii", 1983, ENERGOATOMIZDAT (MOSCOW), p.p. 206-209.
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