CA2576875A1 - Lightweight catenary system - Google Patents
Lightweight catenary system Download PDFInfo
- Publication number
- CA2576875A1 CA2576875A1 CA002576875A CA2576875A CA2576875A1 CA 2576875 A1 CA2576875 A1 CA 2576875A1 CA 002576875 A CA002576875 A CA 002576875A CA 2576875 A CA2576875 A CA 2576875A CA 2576875 A1 CA2576875 A1 CA 2576875A1
- Authority
- CA
- Canada
- Prior art keywords
- catenary
- weight
- pipe
- flexible pipe
- proximity
- 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.)
- Granted
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
Abstract
A lightweight catenary system for deepsea operations in which a lightweight flexible pipe such as disclosed in U.S. Patent No. 6,491,779 is suspended in seawater from a vessel or platform, and having a positive or nearly positive buoyancy, and which is stabilized by disposing weight in proximity to or attached to the lower portion of the pipe at or near the seabed, whereby the weight and costs of supporting heavy pipe in offshore operations is reduced or eliminated.
Claims (10)
1. A lightweight catenary system comprising:
a. a lightweight flexible pipe which has an upward or nearly upward buoyancy when submerged in seawater forming a catenary configuration which hangs under tension in a downward curve in proximity to the seabed to the area at or near the upper seawater surface; and b. some weight attached in proximity to the lower portion of the pipe, with the amount of weight being sufficient to provide resistance to floatation of the flexible pipe and with tension on the pipe to stabilize and maintain the catenary configuration from displacement caused by lateral and other forces in the subsea.
a. a lightweight flexible pipe which has an upward or nearly upward buoyancy when submerged in seawater forming a catenary configuration which hangs under tension in a downward curve in proximity to the seabed to the area at or near the upper seawater surface; and b. some weight attached in proximity to the lower portion of the pipe, with the amount of weight being sufficient to provide resistance to floatation of the flexible pipe and with tension on the pipe to stabilize and maintain the catenary configuration from displacement caused by lateral and other forces in the subsea.
2. The system of claim 1, wherein the lightweight flexible pipe is substantially entirely non-metallic.
3. The system of claim 1, wherein the weight is distributed along the lower portion of the pipe in proximity to the seabed.
4. The system of claim 1, wherein the weight is a metal wire laid in a helical wrap adjacent non metallic strands.
5. A system for maintaining a flexible pipe in a substantially stable catenary configuration when suspended in seawater, comprising:
(a) suspending a flexible pipe having a positive or nearly positive buoyancy when disposed as in a catenary configuration which hangs in tension in a downward curve in proximity to seawater from at or near the seabed to the area at or near the upper seawater surface; and (b) applying weight in proximity to the lower end of said catenary to provide sufficient resistance to floatation of the pipe to stabilize the catenary;
and (c) maintaining the tension on the pipe to stabilize and maintain the catenary configuration from displacement by lateral and other forces in the subsea.
(a) suspending a flexible pipe having a positive or nearly positive buoyancy when disposed as in a catenary configuration which hangs in tension in a downward curve in proximity to seawater from at or near the seabed to the area at or near the upper seawater surface; and (b) applying weight in proximity to the lower end of said catenary to provide sufficient resistance to floatation of the pipe to stabilize the catenary;
and (c) maintaining the tension on the pipe to stabilize and maintain the catenary configuration from displacement by lateral and other forces in the subsea.
6. The system of claim 5, wherein the lightweight flexible pipe is substantially entirely non-metallic.
7. The system of claim 5, wherein the weight is distributed along the lower portion of the pipe in proximity to the seabed.
8. The system of claim 5, wherein the weight is a metal wire laid in a helical wrap adjacent nonmetallic strands.
9. A lightweight catenary system comprising;
(a) a lightweight flexible pipe which has an upward or nearly upward buoyancy when submerged in seawater in a catenary configuration;
(b) some weight attached in proximity to the lower portion of the pipe, with the amount of weight being sufficient to provide resistance to floatation of the flexible pipe to stabilize the catenary configuration;
(c) wherein the weight is a metal wire laid in a helical wrap adjacent non metallic strands.
(a) a lightweight flexible pipe which has an upward or nearly upward buoyancy when submerged in seawater in a catenary configuration;
(b) some weight attached in proximity to the lower portion of the pipe, with the amount of weight being sufficient to provide resistance to floatation of the flexible pipe to stabilize the catenary configuration;
(c) wherein the weight is a metal wire laid in a helical wrap adjacent non metallic strands.
10. A system for maintaining a flexible pipe in a substantially stable catenary configuration when suspended in seawater, comprising;
(a) suspending a flexible pipe having a positive or nearly positive buoyancy when disposed as a catenary in seawater;
(b) applying weight in proximity to the lower end of said catenary to provide sufficient resistance to floatation of the pipe to stabilize the catenary;
(c) wherein the weight is a metal wire laid in a helical wrap adjacent nonmetallic strands.
(a) suspending a flexible pipe having a positive or nearly positive buoyancy when disposed as a catenary in seawater;
(b) applying weight in proximity to the lower end of said catenary to provide sufficient resistance to floatation of the pipe to stabilize the catenary;
(c) wherein the weight is a metal wire laid in a helical wrap adjacent nonmetallic strands.
Applications Claiming Priority (3)
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 |
PCT/US2004/037385 WO2006022785A1 (en) | 2004-08-16 | 2004-11-10 | Lightweight catenary system |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2576875A1 true CA2576875A1 (en) | 2006-03-02 |
CA2576875C CA2576875C (en) | 2010-05-04 |
Family
ID=35800112
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2576875A Expired - Fee Related CA2576875C (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 |
US20120160510A1 (en) * | 2009-08-26 | 2012-06-28 | Deepflex Inc. | Flexible catenary riser having distributed sag bend ballast |
US20130312862A1 (en) * | 2010-12-14 | 2013-11-28 | 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 |
US9353579B2 (en) * | 2011-11-29 | 2016-05-31 | Ge Oil & Gas Uk Limited | Buoyancy compensating element and method |
MX2017002376A (en) * | 2014-09-23 | 2017-08-24 | Halliburton Energy Services Inc | Spoolable swivel. |
CN111971501B (en) * | 2018-01-26 | 2023-04-28 | 马来西亚国家石油公司 | Conduit assembly and method of installation |
Family Cites Families (19)
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 |
GR59794B (en) * | 1975-03-27 | 1978-02-28 | Doris Dev Richesse Sous Marine | Laying pipes under-water |
DE3272253D1 (en) * | 1981-04-07 | 1986-09-04 | Erik Brandtzaeg Meyer | Weight coated subsea pipe line section |
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 |
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 |
US6491779B1 (en) * | 1999-05-03 | 2002-12-10 | Deepsea Flexibles, Inc. | Method of forming a composite tubular assembly |
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 |
GB2391600B (en) * | 2001-04-27 | 2005-09-21 | Fiberspar Corp | Buoyancy control systems for tubes |
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 CA CA2576875A patent/CA2576875C/en not_active Expired - Fee Related
- 2004-11-10 WO PCT/US2004/037385 patent/WO2006022785A1/en active Application Filing
- 2004-11-10 BR BRPI0418916-7A patent/BRPI0418916B1/en not_active IP Right Cessation
- 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
-
2007
- 2007-02-28 NO NO20071136A patent/NO20071136L/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
CN101566254A (en) | 2009-10-28 |
EP1784598A1 (en) | 2007-05-16 |
CA2576875C (en) | 2010-05-04 |
EP1784598A4 (en) | 2010-11-03 |
CN101566254B (en) | 2011-01-12 |
CN101010535A (en) | 2007-08-01 |
US20060034665A1 (en) | 2006-02-16 |
US7073978B2 (en) | 2006-07-11 |
WO2006022785A1 (en) | 2006-03-02 |
CN100498029C (en) | 2009-06-10 |
BRPI0418916B1 (en) | 2018-03-13 |
BRPI0418916A (en) | 2007-12-11 |
NO20071136L (en) | 2007-02-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2576875A1 (en) | Lightweight catenary system | |
EP2156004B1 (en) | Disconnectable riser-mooring system | |
AU711621B2 (en) | System for anchoring ships | |
CN111372845A (en) | Method for operating a floating vessel | |
EP2576333B1 (en) | A flexible pipe system | |
US7430979B2 (en) | Method of transporting an elongate member | |
CN102815373A (en) | Hybrid deep water mooring system | |
US8905143B2 (en) | Riser configuration | |
WO2009118467A8 (en) | Method of installing an underwater riser | |
US20060056918A1 (en) | Riser system connecting two fixed underwater installations to a floating surface unit | |
KR20200079537A (en) | Method for operating floating vessels | |
AU2009312648A1 (en) | Method for installing an operating rig for a fluid in a body of water with a traction unit | |
US8425156B2 (en) | Underwater buoy with modular members | |
WO2007108693A1 (en) | Vibration reducer for reducing flow induced vibrations in a pipe and method of reducing such vibrations | |
US8544403B2 (en) | Floating unit | |
AU2009272589A1 (en) | Underwater hydrocarbon transport apparatus | |
US9944358B2 (en) | Transportation and installation of subsea rigid tie-in connections | |
WO2007045850A1 (en) | Tethered buoyant support and method for installation thereof | |
CN111372844B (en) | Method for offshore floating type petroleum production, storage and unloading by using buoyancy structure | |
NO332013B1 (en) | Surface buoy, as well as method of installation binding and stabilization thereof |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20191112 |