GB2403785A - Assembly of multi-conduit pipelines - Google Patents

Assembly of multi-conduit pipelines

Info

Publication number
GB2403785A
GB2403785A GB0421954A GB0421954A GB2403785A GB 2403785 A GB2403785 A GB 2403785A GB 0421954 A GB0421954 A GB 0421954A GB 0421954 A GB0421954 A GB 0421954A GB 2403785 A GB2403785 A GB 2403785A
Authority
GB
United Kingdom
Prior art keywords
pipe
conduit
initiation
segment
primary
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB0421954A
Other versions
GB0421954D0 (en
Inventor
Etienne Raymond Robert Beatrix
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stolt Offshore SA
Original Assignee
Stolt Offshore SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Stolt Offshore SA filed Critical Stolt Offshore SA
Publication of GB0421954D0 publication Critical patent/GB0421954D0/en
Publication of GB2403785A publication Critical patent/GB2403785A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L39/00—Joints or fittings for double-walled or multi-channel pipes or pipe assemblies

Abstract

There are disclosed methods, components and sub-assemblies for use in the construction of multi-conduit pipelines having multiple fluid conduits (160, 170) closely spaced to one another, and shielded by an outer conduit (200) for insulation. Known pipe-in-pipe constructions are not readily adaptable to include more than one conduit within the outer pipe. In the novel construction, a bulkhead sub-assembly (Fig.5(a)) is first provided, comprising a cast bulkhead unit 100, a primary pipe initiation segment and a secondary pipe initiation segment extending from the bulkhead unit alongside and shorter than the primary initiation segment (Fig. 3). The material and dimensions of the initiation segments are such as to permit temporary deflection of one away from the other sufficiently to permit orbital welding of a further secondary pipe segment to the end of the secondary pipe initiation segment. Both primary and secondary conduits (160, 170) and the outer conduit (200) can then be grown section-by- section using conventional welding equipment only.
GB0421954A 2002-04-05 2003-04-02 Assembly of multi-conduit pipelines Withdrawn GB2403785A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0207898.8A GB0207898D0 (en) 2002-04-05 2002-04-05 Assembly of multi conduit pipelines
PCT/EP2003/004178 WO2003085312A1 (en) 2002-04-05 2003-04-02 Assembly of multi-conduit pipelines

Publications (2)

Publication Number Publication Date
GB0421954D0 GB0421954D0 (en) 2004-11-03
GB2403785A true GB2403785A (en) 2005-01-12

Family

ID=9934321

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB0207898.8A Ceased GB0207898D0 (en) 2002-04-05 2002-04-05 Assembly of multi conduit pipelines
GB0421954A Withdrawn GB2403785A (en) 2002-04-05 2003-04-02 Assembly of multi-conduit pipelines

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB0207898.8A Ceased GB0207898D0 (en) 2002-04-05 2002-04-05 Assembly of multi conduit pipelines

Country Status (4)

Country Link
AU (1) AU2003229710A1 (en)
GB (2) GB0207898D0 (en)
NO (1) NO20044752L (en)
WO (1) WO2003085312A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6955221B2 (en) 2002-05-31 2005-10-18 Stolt Offshore Inc. Active heating of thermally insulated flowlines
US8141218B2 (en) 2005-01-14 2012-03-27 Cornelis Van Zandwijk Method for manufacturing a double walled pipeline
GB2443832B (en) * 2006-11-14 2010-08-18 Schlumberger Holdings Method and system of deploying one or more optical fiber waveguides in conjunction with a pipeline
GB2496561B (en) * 2010-09-01 2015-12-02 Schlumberger Holdings Pipeline with integrated fiber optic cable

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696835A (en) * 1950-11-04 1954-12-14 Edward W Kaiser Conduit construction
FR2341094A1 (en) * 1976-02-16 1977-09-09 Pichon Michel Flange for welding to double walled pipe - has chamfered inner and outer joints staggered for easy access
GB1519722A (en) * 1975-06-06 1978-08-02 Martime D Expertises Comex Com Disconnectable pipe union
US4573714A (en) * 1983-04-26 1986-03-04 Vetco Offshore, Inc. Marine riser coupling assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696835A (en) * 1950-11-04 1954-12-14 Edward W Kaiser Conduit construction
GB1519722A (en) * 1975-06-06 1978-08-02 Martime D Expertises Comex Com Disconnectable pipe union
FR2341094A1 (en) * 1976-02-16 1977-09-09 Pichon Michel Flange for welding to double walled pipe - has chamfered inner and outer joints staggered for easy access
US4573714A (en) * 1983-04-26 1986-03-04 Vetco Offshore, Inc. Marine riser coupling assembly

Also Published As

Publication number Publication date
GB0421954D0 (en) 2004-11-03
NO20044752L (en) 2004-11-02
GB0207898D0 (en) 2002-05-15
WO2003085312A1 (en) 2003-10-16
AU2003229710A1 (en) 2003-10-20

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)