Global Patent Index - EP 1276828 A1

EP 1276828 A1 20030122 - MAINTENANCE OF OIL PRODUCTION AND REFINING EQUIPMENT

Title (en)

MAINTENANCE OF OIL PRODUCTION AND REFINING EQUIPMENT

Title (de)

WARTUNG VON ÖLGEWINNUNGS- UND RAFFINIERUNGSVORRICHTUNGEN

Title (fr)

ENTRETIEN D'INSTALLATION DE PRODUCTION ET DE RAFFINAGE DE PETROLE

Publication

EP 1276828 A1 20030122 (EN)

Application

EP 01917236 A 20010328

Priority

  • GB 0101382 W 20010328
  • GB 0007830 A 20000331
  • US 20503100 P 20000518

Abstract (en)

[origin: WO0174966A1] The deposition of asphaltenes and/or petroleum waxes can be inhibited and/or asphaltenes and/or petroleum waxes can be removed from a well, pipe or vessel by contacting the asphaltene and/or petroleum wax or the well pipe or vessel adjacent a location where deposition of asphaltene and/or petroleum wax is expected, with a solvent including at least one compound of the formula (I): R<1>-(AO)n-OOC-(CH2)m-Ph-(R<2>)p where R<1> is a C1 to C20 hydrocarbyl group; AO is an alkyleneoxy group and may vary along the (poly)alkyleneoxy chain; n is 0 or from 1 to 100; m is 0, 1 or 2; and Ph is a phenyl group, which may be substituted with groups (R<2>)p where each R<2> is independently a C1 to C4 alkyl or alkoxy group; and p is 0, 1 or 2, and subsequently removing the solvent with softened, dissolved or dispersed asphaltenes and/or petroleum waxes from the well, pipe or vessel.

IPC 1-7

C09K 7/00; E21B 37/06

IPC 8 full level

C09K 8/58 (2006.01); C09K 8/04 (2006.01); C09K 8/524 (2006.01)

CPC (source: EP)

C09K 8/524 (2013.01)

Citation (search report)

See references of WO 0174966A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

DOCDB simple family (publication)

WO 0174966 A1 20011011; AR 028524 A1 20030514; AU 4432101 A 20011015; BR 0109728 A 20030204; CA 2404316 A1 20011011; CN 1429262 A 20030709; EA 004278 B1 20040226; EA 200201028 A1 20030424; EP 1276828 A1 20030122; JP 2004509172 A 20040325; MX PA02009674 A 20030527; NO 20024638 D0 20020927; NO 20024638 L 20021119; TW 546370 B 20030811

DOCDB simple family (application)

GB 0101382 W 20010328; AR P010101414 A 20010326; AU 4432101 A 20010328; BR 0109728 A 20010328; CA 2404316 A 20010328; CN 01808222 A 20010328; EA 200201028 A 20010328; EP 01917236 A 20010328; JP 2001572643 A 20010328; MX PA02009674 A 20010328; NO 20024638 A 20020927; TW 90106069 A 20010315