WO2006022785A1 - Lightweight catenary system - Google Patents
Lightweight catenary system Download PDFInfo
- Publication number
- WO2006022785A1 WO2006022785A1 PCT/US2004/037385 US2004037385W WO2006022785A1 WO 2006022785 A1 WO2006022785 A1 WO 2006022785A1 US 2004037385 W US2004037385 W US 2004037385W WO 2006022785 A1 WO2006022785 A1 WO 2006022785A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pipe
- weight
- catenary
- lightweight
- seawater
- 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
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/12—Laying or reclaiming pipes on or under water
- F16L1/20—Accessories therefor, e.g. floats, weights
- F16L1/24—Floats; Weights
Definitions
- the field of the invention is lightweight flexible pipe catenary systems for deep sea installations.
- Patent Number 6,491,779Bl discloses a flexible pipe made of lightweight composite materials for subsea use.
- relatively heavy pipe usually steel
- Such prior systems require the users to provide expensive equipment at the surface or elsewhere to offset the large weight of the steel pipe.
- the industry has continued to use such heavy pipe with the problems resulting from the weight of the pipe.
- the catenaries formed when the pipe is submerged from a vessel or platform have a positive buoyancy, or a substantially reduced weight, compared to the prior art, which significantly reduces the cost for supporting the pipe when suspended in subsea uses.
- Fig. 1 is an elevation schematically showing a vessel floating in seawater with a first heavy pipe of steel or the like on the right of Fig. 1 suspended by the vessel or other support from the seawater' s surface and forming a conventional catenary as it extends to a position on the seabed, and also for comparison, a lightweight pipe of this invention is shown on the left which is either buoyant or nearly buoyant when suspended in the same manner from the vessel or other support;
- Fig. 2 is an elevation schematically showing the catenary configuration of the lightweight pipe to which some weight has been added to increase tension in the catenary to maintain the catenary as the seawater depth changes and the pipe is picked up and laid down on the seabed; and
- Fig. 3 is a partial elevation of an alternate form of the lightweight pipe in accordance with US Patent Number 6,491,779, and which has steel, lead or heavy filler material laid in with the helically wound non-metallic strands to provide weight to maintain the catenary configuration in the final position on the seabed.
- a vessel or platform 10 for supporting a pipe 12 or 14 for "sweet" and “sour” service production, including export and injection services. Fluids transported include oil, gas, water and injection chemicals.
- the pipe 12 is a conventional pipe or umbilical made of steel and is non-buoyant.
- the offshore industry has spent millions of dollars to provide buoyancy to such conventional pipe because every unit of weight suspended in water requires buoyancy from a floating system, which in turn dictates the size and cost of the systems.
- the pipe 14 is a lightweight flexible pipe which is entirely non-metallic or substantially non-metallic, and is buoyant when suspended as a catenary in seawater from the seawater surface S supported from a vessel or platform 10.
- the lightweight pipe tends to be unstable when affected by water currents or other forces usually in lateral directions.
- the buoyancy of the lightweight pipe when stabilized by adding weight has a major advantage of reducing or even eliminating the problems and costs of suspending heavy pipe in seawater for offshore operations.
- Tubular composite non-metallic pipe has been disclosed per se in US Patent Numbers 5,261,462 and 5,435,867, but so far as known, such pipe has not been made in long lengths prior to the invention disclosed in US Patent Number 6,491,779 invented by Michael J. Bryant, where the flexible pipe is suspended from a vessel or platform to and along a seabed in a catenary configuration. Therefore, although the pipe disclosed by Donald H. Wolfe in the patents identified above may be considered "lightweight", it did not solve the problems of this invention.
- the flexible composite pipe of US Patent Number 6,491,779 invented by Michael J. Bryant and as used in this invention has solved the problem of the costs of supporting long lengths of pipe used in such catenary configurations for offshore operations.
- lightweight pipe as used herein means pipe made from composite, substantially non-metallic materials and in lengths which are long enough for deep subsea operations in which the pipe forms a catenary from the sea water surface to the seabed. This invention is especially suitable for use at deepwater depths of more than one- thousand feet.
- Weight may be added to the lightweight pipe to the extent determined to maintain it in a stable catenary configuration.
- one or more weights 16 maybe distributed together or separately along the lower part of the pipe 20, near the portion of the pipe resting on the seabed, and/or preferably just above the seabed B. The weights are attached to the pipe 20 and then the pipe is lowered into the seawater W from the seawaters surface S to extend along the seabed B to terminals or other submerged equipment (not shown). Tension is created in the pipe 20 to achieve the catenary configuration such as shown in Fig. 2 of the drawings to stabilize the pipe during use in the seawater S.
- Fig. 3 shows a portion of a lightweight pipe made in accordance with US Patent Number 6,491,779, which is incorporated herein, and which is essentially made of composite non-metallic components such as a tubular conductor 30, pressure and collapse reinforcements 32, a membrane extrusion 33, tensile reinforcements 34, and an outer jacket 36.
- steel, lead or heavy material 40 may be wires laid or formed helically with non-metallic strands 34 in the manufacturing process.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04800931A EP1784598A4 (en) | 2004-08-16 | 2004-11-10 | Lightweight catenary system |
CA2576875A CA2576875C (en) | 2004-08-16 | 2004-11-10 | Lightweight catenary system |
BRPI0418916-7A BRPI0418916B1 (en) | 2004-08-16 | 2004-11-10 | LITTLE WEIGHT CATENARY SYSTEM |
NO20071136A NO20071136L (en) | 2004-08-16 | 2007-02-28 | Lightweight chain line system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/918,843 | 2004-08-16 | ||
US10/918,843 US7073978B2 (en) | 2004-08-16 | 2004-08-16 | Lightweight catenary system |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006022785A1 true WO2006022785A1 (en) | 2006-03-02 |
Family
ID=35800112
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2004/037385 WO2006022785A1 (en) | 2004-08-16 | 2004-11-10 | Lightweight catenary system |
Country Status (7)
Country | Link |
---|---|
US (1) | US7073978B2 (en) |
EP (1) | EP1784598A4 (en) |
CN (2) | CN101566254B (en) |
BR (1) | BRPI0418916B1 (en) |
CA (1) | CA2576875C (en) |
NO (1) | NO20071136L (en) |
WO (1) | WO2006022785A1 (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8714204B2 (en) * | 2006-12-18 | 2014-05-06 | Deepflex Inc. | Free venting pipe and method of manufacture |
US7781040B2 (en) * | 2007-03-21 | 2010-08-24 | Deepflex Inc. | Flexible composite tubular assembly with high insulation properties and method for making same |
US20080302535A1 (en) * | 2007-06-08 | 2008-12-11 | David Barnes | Subsea Intervention Riser System |
US7784723B2 (en) | 2007-09-11 | 2010-08-31 | Deepflex Inc. | Layered tape guide spool and alignment device and method |
GB0722459D0 (en) | 2007-11-16 | 2007-12-27 | Wellstream Int Ltd | Flexible pipe support |
US20090160184A1 (en) * | 2007-12-20 | 2009-06-25 | Vo Dang The | End Connector For Flexible Pipe |
US7946313B2 (en) | 2008-03-05 | 2011-05-24 | Vo Dang The | Flexible pipe |
US8276620B2 (en) * | 2008-03-05 | 2012-10-02 | Vo Dang The | Flexible pipe for offshore and other applications |
CN102482922B (en) * | 2009-08-26 | 2014-10-29 | 迪普弗莱克斯有限公司 | Flexible catenary riser having distributed sag bend ballast |
EP2652380A4 (en) | 2010-12-14 | 2015-04-01 | Deepflex Inc | Spoolable pipe with increased compressive strength and method of manufacture |
GB2492414B (en) * | 2011-07-01 | 2013-07-03 | Subsea 7 Norway Nuf | Initiation of lightweight flexible pipelines and umbilicals |
CN104114806B (en) * | 2011-11-29 | 2017-05-10 | 通用电气石油和天然气英国有限公司 | Assembly for providing buoyancy and bending support for flexible tube and setting method thereof |
WO2016048284A1 (en) * | 2014-09-23 | 2016-03-31 | Halliburton Energy Services, Inc. | Spoolable swivel |
WO2019147124A1 (en) * | 2018-01-26 | 2019-08-01 | Petroliam Nasional Berhad (Petronas) | Pipeline assembly and method of installation |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4063430A (en) * | 1975-03-27 | 1977-12-20 | C. G. Doris (Compagnie Generale Pour Les Developpements Operationnels Des Richesses Sous-Marines | Laying of submarine pipes |
US4556340A (en) * | 1983-08-15 | 1985-12-03 | Conoco Inc. | Method and apparatus for production of subsea hydrocarbons using a floating vessel |
US4735267A (en) * | 1985-03-11 | 1988-04-05 | Shell Oil Company | Flexible production riser assembly and installation method |
US5261462A (en) | 1991-03-14 | 1993-11-16 | Donald H. Wolfe | Flexible tubular structure |
US6491779B1 (en) | 1999-05-03 | 2002-12-10 | Deepsea Flexibles, Inc. | Method of forming a composite tubular assembly |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2373439A (en) * | 1943-07-29 | 1945-04-10 | Wheatley Thomas | River weight |
US3111926A (en) * | 1961-12-07 | 1963-11-26 | Shell Oil Co | Apparatus for anchoring underwater vessels |
US3477474A (en) * | 1967-03-22 | 1969-11-11 | American Chain & Cable Co | Wire reinforced conduit |
US3583169A (en) * | 1969-07-08 | 1971-06-08 | North American Rockwell | Submarine pipeline laying |
BE804505A (en) * | 1973-09-05 | 1974-01-02 | Nabalco Eng Pty Ltd | Submarine pipelines - assembled complete on land |
US4606378A (en) * | 1981-04-07 | 1986-08-19 | Meyer Erik B | Weightcoated subsea pipeline section |
NO310890B1 (en) * | 1997-04-29 | 2001-09-10 | Kvaerner Oilfield Prod As | Dynamic control cable for use between a floating structure and a connection point on the seabed |
US5984581A (en) * | 1997-06-17 | 1999-11-16 | B.L. Key Services, L.L.C. | Pipeline coating |
US6109834A (en) * | 1998-08-28 | 2000-08-29 | Texaco Inc. | Composite tubular and methods |
US6164052A (en) * | 1998-10-27 | 2000-12-26 | Golay; George Rex | Retractable hay and bean fluffer |
FR2790814B1 (en) * | 1999-03-09 | 2001-04-20 | Coflexip | HYBRID CONDUIT FOR LARGE DEPTH |
NO311295B1 (en) * | 1999-06-23 | 2001-11-12 | Navion As | Equipment for storing a load hose in a body of water, and method for transferring the hose from the storage position to the use position |
GB2391917B (en) * | 2001-04-27 | 2005-10-26 | Fiberspar Corp | Improved composite tubing |
US6682266B2 (en) * | 2001-12-31 | 2004-01-27 | Abb Anchor Contracting As | Tension leg and method for transport, installation and removal of tension legs pipelines and slender bodies |
-
2004
- 2004-08-16 US US10/918,843 patent/US7073978B2/en not_active Expired - Fee Related
- 2004-11-10 EP EP04800931A patent/EP1784598A4/en not_active Ceased
- 2004-11-10 WO PCT/US2004/037385 patent/WO2006022785A1/en active Application Filing
- 2004-11-10 CN CN200910142923XA patent/CN101566254B/en not_active Expired - Fee Related
- 2004-11-10 CN CNB2004800438044A patent/CN100498029C/en not_active Expired - Fee Related
- 2004-11-10 CA CA2576875A patent/CA2576875C/en not_active Expired - Fee Related
- 2004-11-10 BR BRPI0418916-7A patent/BRPI0418916B1/en not_active IP Right Cessation
-
2007
- 2007-02-28 NO NO20071136A patent/NO20071136L/en not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4063430A (en) * | 1975-03-27 | 1977-12-20 | C. G. Doris (Compagnie Generale Pour Les Developpements Operationnels Des Richesses Sous-Marines | Laying of submarine pipes |
US4556340A (en) * | 1983-08-15 | 1985-12-03 | Conoco Inc. | Method and apparatus for production of subsea hydrocarbons using a floating vessel |
US4735267A (en) * | 1985-03-11 | 1988-04-05 | Shell Oil Company | Flexible production riser assembly and installation method |
US5261462A (en) | 1991-03-14 | 1993-11-16 | Donald H. Wolfe | Flexible tubular structure |
US5435867A (en) | 1991-03-14 | 1995-07-25 | Donald H. Wolf | Method of manufacturing a flexible tubular structure |
US6491779B1 (en) | 1999-05-03 | 2002-12-10 | Deepsea Flexibles, Inc. | Method of forming a composite tubular assembly |
Non-Patent Citations (1)
Title |
---|
See also references of EP1784598A4 |
Also Published As
Publication number | Publication date |
---|---|
BRPI0418916A (en) | 2007-12-11 |
US20060034665A1 (en) | 2006-02-16 |
BRPI0418916B1 (en) | 2018-03-13 |
CA2576875C (en) | 2010-05-04 |
CN101566254B (en) | 2011-01-12 |
CA2576875A1 (en) | 2006-03-02 |
CN101566254A (en) | 2009-10-28 |
CN100498029C (en) | 2009-06-10 |
US7073978B2 (en) | 2006-07-11 |
EP1784598A4 (en) | 2010-11-03 |
CN101010535A (en) | 2007-08-01 |
NO20071136L (en) | 2007-02-28 |
EP1784598A1 (en) | 2007-05-16 |
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