WO2000069616A1 - Lining a pipe - Google Patents
Lining a pipe Download PDFInfo
- Publication number
- WO2000069616A1 WO2000069616A1 PCT/GB2000/001154 GB0001154W WO0069616A1 WO 2000069616 A1 WO2000069616 A1 WO 2000069616A1 GB 0001154 W GB0001154 W GB 0001154W WO 0069616 A1 WO0069616 A1 WO 0069616A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- liner
- pipe
- lining
- cross
- melting point
- Prior art date
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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
- F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
- F16L55/1652—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section the flexible liner being pulled into the damaged section
- F16L55/1654—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section the flexible liner being pulled into the damaged section and being inflated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/26—Lining or sheathing of internal surfaces
- B29C63/34—Lining or sheathing of internal surfaces using tubular layers or sheathings
-
- 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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
- F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
- F16L55/1656—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section materials for flexible liners
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/24—Condition, form or state of moulded material or of the material to be shaped crosslinked or vulcanised
Definitions
- This invention relates to a liner pipe of thermoplastic material for lining offshore pipes and a method of lining a pipe with such a liner.
- Liner technology is particularly important in relation to pressurised offshore pipelines wherein a high performance liner is required to withstand the hostile environment caused by, for example, the passage of aggressive hydrocarbons or wet acid gas.
- the method of installing the liner in the pipe is also a prime consideration.
- GB2324846A describes a method of lining a pipe comprising a) inserting into the pipe to be lined a lining pipe of thermoplastics material, the lining pipe being of smaller diameter than the pipe to be lined, and the thermoplastics material incorporating a cross-linking agent, b) causing the lining pipe to expand into contact with the pipe to be lined, and c) cross-linking the thermoplastics material.
- This method is advantageous in that the liner is cross- linked after it has been introduced into the pipe.
- the liner initially has a smaller diameter than the existing pipe and is therefore relatively easy to introduce, without the need for complex and expensive equipment .
- the act of cross-linking in situ causes the liner to set at the diameter of the existing pipe.
- the liner may also adhere or bond to the internal surface of the existing pipe, giving a considerable increase in stability and reducing corrosion at the annular interface.
- no large and costly equipment is required for reduction of the liner diameter prior to installation of the liner.
- the liner Under normal operating conditions, the liner is subject to compressive stresses and fluids can diffuse through the polymeric liner pipe so that fluids build up at the interface between the liner and the pipeline.
- a method of lining a pipe comprising the steps of a) extruding and cross-linking a lining pipe ("the liner") of thermoplastics material and having a first diameter of smaller diameter than that of the pipe to be lined; b) inserting the liner into the pipe to be lined; c) heating the liner to above its crystalline melting point; and d) causing the liner to expand into contact with the pipe to be lined.
- the method further comprises the steps of f) re-heating the liner to above its crystalline melting point, thereby allowing the liner to return to the first diameter, substantially retaining its cross- sectional shape, so that, for example, maintenance can be carried out .
- the method further comprises the step of depressurising the pipe.
- the method further comprises the steps of a) heating the liner again to above its crystalline melting point; and b) causing the liner to re-expand into contact with the pipe .
- the method further comprises the step of repressurising the pipe.
- the liner by virtue of being cross-linked, will have a memory of the original small ("first") diameter.
- the liner is expanded by passing hot oil or other suitable fluid down the liner.
- a lining pipe for use in the method substantially as described above.
- the liner is of a cross-linkable polyolefin.
- the liner is of cross-linkable polyethylene.
- Figure la is a cross-section of a prior art pipeline and liner, showing the deformed liner after depressurisation
- Figure lb is a longitudinal section of the pipeline and liner of Figure la;
- Figures 2-4 show cross-sections of a pipeline and liner according to the present invention, at various stages as described below.
- the liner 2 may remain deformed causing the problems outlined above.
- a lining pipe (“the liner") 4 is extruded from thermoplastics material to have a diameter ("a first diameter") smaller than the diameter of a pipe 5 to be lined.
- the liner 4 is cross-linked at this first diameter.
- the liner 4 is then inserted into the pipe to be lined 5 using known techniques, as shown in figure 2. Once the liner is located inside the pipe 5, the liner is heated, by passing hot oil along it to a temperature above its crystalline melting point, and typically 5 to 50°C above the crystalline melting point. Now, it can be expanded (using known techniques) such as pressurisation against the internal surface of the pipe 5, as shown in figure 3. The liner 4 is then cooled and frozen in this position, thus providing a close-fitting liner for the pipe 5.
- the pipe 5 When in service, the pipe 5 is pressurised as indicated in Figure 4. Given the nature of the liner, fluids can diffuse through the liner and build up at the interface 6 between the liner 4 and pipe 5. This build-up of pressurised fluid is what would normally lead to deformation of the liner on depressurisation of the pipe 5 (as described above) .
- the liner 4 is heated to a temperature beyond its crystalline melting point which enables the cross-linked liner to revert to its first diameter (i.e. the diameter smaller than that of pipe 5) if the pressure inside the liner is slowly reduced. This is represented in Figure 2. This releases the pressure build-up at the liner-pipe interface 6, without any deformation of the liner 4.
- the liner 4 Before repressurisation of the pipe, the liner 4 needs to be reheated and expanded against the internal surface of the pipe 5. The same expansion technique can be used as when the liner 4 was first inserted to the pipe 5 (as described with respect to Figure 3) .
- the liner 4 having a built-in memory, alleviates the problems associated with gas-build up between the pipe 5 and liner by retaining its cross- sectional shape substantially without deformation.
- the PE-X liner has good high temperature (40-100°C) strength and very good resistance to attack by aggressive fluids.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU34463/00A AU3446300A (en) | 1999-05-18 | 2000-03-28 | Lining a pipe |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9911477.9 | 1999-05-18 | ||
GB9911477A GB2350168B (en) | 1999-05-18 | 1999-05-18 | Lining a pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000069616A1 true WO2000069616A1 (en) | 2000-11-23 |
Family
ID=10853636
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2000/001154 WO2000069616A1 (en) | 1999-05-18 | 2000-03-28 | Lining a pipe |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU3446300A (en) |
GB (1) | GB2350168B (en) |
WO (1) | WO2000069616A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014130683A1 (en) * | 2013-02-20 | 2014-08-28 | Crane Engineering, Inc. | Self-obstructing flammable fluid carrying conduit |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BR0308435B1 (en) | 2002-03-20 | 2013-12-17 | Process for producing a flexible unbound sea pipe |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5589131A (en) * | 1986-03-31 | 1996-12-31 | Nupipe, Inc. | Method for manufacturing a replacement pipe for installation in an existing conduit |
US5671778A (en) * | 1993-05-24 | 1997-09-30 | Ashimori Kogyo Kabushiki Kaisha | Repairing tube, method for repairing pipe lines therewith and method for removing the repairing tube |
GB2324846A (en) * | 1997-05-03 | 1998-11-04 | Advanced Eng Solutions Ltd | Lining a pipe |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1310915A (en) * | 1969-12-16 | 1973-03-21 | Dunlop Holdings Ltd | Lined pipes |
GB2264765B (en) * | 1992-02-27 | 1995-04-12 | British Gas Plc | Method of lining a pipeline |
GB2272496A (en) * | 1992-10-31 | 1994-05-18 | Uponor Aldyl Ltd | Lining of elongate hollow member |
GB2300457B (en) * | 1992-10-31 | 1997-04-23 | Uponor Ltd | Apparatus for manufacturing a dimensionally recoverable liner |
-
1999
- 1999-05-18 GB GB9911477A patent/GB2350168B/en not_active Expired - Fee Related
-
2000
- 2000-03-28 WO PCT/GB2000/001154 patent/WO2000069616A1/en active Application Filing
- 2000-03-28 AU AU34463/00A patent/AU3446300A/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5589131A (en) * | 1986-03-31 | 1996-12-31 | Nupipe, Inc. | Method for manufacturing a replacement pipe for installation in an existing conduit |
US5671778A (en) * | 1993-05-24 | 1997-09-30 | Ashimori Kogyo Kabushiki Kaisha | Repairing tube, method for repairing pipe lines therewith and method for removing the repairing tube |
GB2324846A (en) * | 1997-05-03 | 1998-11-04 | Advanced Eng Solutions Ltd | Lining a pipe |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014130683A1 (en) * | 2013-02-20 | 2014-08-28 | Crane Engineering, Inc. | Self-obstructing flammable fluid carrying conduit |
US9470327B2 (en) | 2013-02-20 | 2016-10-18 | Thomas R. Crane | Self-obstructing flammable fluid carrying conduit |
US10094484B2 (en) | 2013-02-20 | 2018-10-09 | Thomas R. Crane | Self-obstructing flammable fluid carrying conduit |
US10914392B2 (en) | 2013-02-20 | 2021-02-09 | Thomas R. Crane | Self-obstructing flammable fluid carrying conduit |
Also Published As
Publication number | Publication date |
---|---|
GB9911477D0 (en) | 1999-07-14 |
GB2350168B (en) | 2003-07-09 |
GB2350168A (en) | 2000-11-22 |
AU3446300A (en) | 2000-12-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5487411A (en) | Liner pipe for repair of a host pipe | |
US7418979B2 (en) | Method and apparatus for preventing foam disbondment | |
EP0848659B1 (en) | Pipe liner and method of installation | |
CA2454541A1 (en) | Ceramic coating process for pre-insulated piping | |
AU2016265765B2 (en) | Joining lined pipe sections | |
CA2368104C (en) | Insulated pipe structure and methods of making such structures | |
WO2000069616A1 (en) | Lining a pipe | |
WO2004044371A1 (en) | Replaceable liner for metal lined composite risers in offshore applications | |
GB2353581A (en) | Swage lining | |
WO2011045567A1 (en) | Lined pipes with insulation | |
GB2324846A (en) | Lining a pipe | |
WO2002070235A2 (en) | Method of joining prefabricated thermal insulated pipes | |
AU2016355234B2 (en) | Holding back elongate elements during subsea operations | |
HU222485B1 (en) | Method of lining pipes | |
AU750678B2 (en) | Method of lining pipes | |
US20040206411A1 (en) | Water supply pipe liner | |
EP1857725B1 (en) | Insulation of pipe-in-pipe systems | |
AU715444B2 (en) | Pipe liner and method of installation | |
CA2132492C (en) | Liner pipe for repair of a host pipe | |
GB2298689A (en) | Process for joining pipes | |
EP1543269A1 (en) | An insulated pipe and a mehtod for manufacturing an insulated pipe | |
EP0728976A1 (en) | Improvements in and relating to pipe joints | |
JP2602378B2 (en) | Polyethylene resin pipe for lining existing pipe |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
122 | Ep: pct application non-entry in european phase | ||
NENP | Non-entry into the national phase |
Ref country code: JP |