EP0911482A3 - Stress relief joints for risers - Google Patents

Stress relief joints for risers Download PDF

Info

Publication number
EP0911482A3
EP0911482A3 EP98308732A EP98308732A EP0911482A3 EP 0911482 A3 EP0911482 A3 EP 0911482A3 EP 98308732 A EP98308732 A EP 98308732A EP 98308732 A EP98308732 A EP 98308732A EP 0911482 A3 EP0911482 A3 EP 0911482A3
Authority
EP
European Patent Office
Prior art keywords
riser
pipes
pipe
stress relief
risers
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
Application number
EP98308732A
Other languages
German (de)
French (fr)
Other versions
EP0911482A2 (en
EP0911482B1 (en
Inventor
Lyle David Finn
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.)
Deep Oil Technology Inc
Original Assignee
Deep Oil Technology Inc
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 Deep Oil Technology Inc filed Critical Deep Oil Technology Inc
Publication of EP0911482A2 publication Critical patent/EP0911482A2/en
Publication of EP0911482A3 publication Critical patent/EP0911482A3/en
Application granted granted Critical
Publication of EP0911482B1 publication Critical patent/EP0911482B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/01—Risers
    • E21B17/017—Bend restrictors for limiting stress on risers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
    • B63B21/502—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers by means of tension legs

Abstract

A stress relief joint (10) for use with riser pipe (22) in floating systems wherein a vessel is subjected to variable motion caused by wind, currents and/or wave action. The riser pipe (22) has one end connectable to the sea floor and an upper portion arranged to pass through an opening at the bottom of the vessel. The lower end, which is connectable to other pipes at the sea floor, is provided with concentric pipes or sleeves (30, 32) around the riser (22). The lower ends of the pipes (30, 32) and riser (22) are welded to a flange (34). The upper end of each of the concentric pipes (30, 32) extends beyond the upper end of the pipe immediately surrounding it. The annulus between the concentric pipes (30, 32) and the riser (22) may be filled with a durable and pliable material (36). Also, shims (38) may be inserted in the annulus at the end of each pipe segment.
EP19980308732 1997-10-27 1998-10-26 Stress relief joints for risers Expired - Lifetime EP0911482B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US95849597A 1997-10-27 1997-10-27
US958495 1997-10-27

Publications (3)

Publication Number Publication Date
EP0911482A2 EP0911482A2 (en) 1999-04-28
EP0911482A3 true EP0911482A3 (en) 2002-04-03
EP0911482B1 EP0911482B1 (en) 2004-10-20

Family

ID=25500995

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980308732 Expired - Lifetime EP0911482B1 (en) 1997-10-27 1998-10-26 Stress relief joints for risers

Country Status (6)

Country Link
EP (1) EP0911482B1 (en)
AU (1) AU8950298A (en)
BR (1) BR9804215A (en)
FI (1) FI982309A (en)
NO (1) NO319687B1 (en)
OA (1) OA10906A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2362183A (en) * 2000-05-10 2001-11-14 Secr Defence Method of reinforcing structures
BR0303446B1 (en) * 2003-09-03 2014-04-08 Technip France STRONGER FIXING ASSEMBLY FOR FLEXIBLE PIPE PROTECTIVE ASSEMBLY
US7069958B2 (en) * 2004-01-29 2006-07-04 Wellstream International Limited Assembly and method for stiffening a flexible pipe
FR2930587A1 (en) * 2008-04-24 2009-10-30 Saipem S A Sa BACKFLY-SURFACE LINK INSTALLATION OF A RIGID CONDUIT WITH A POSITIVE FLOATABLE FLEXIBLE DRIVE AND A TRANSITIONAL PART OF INERTIA
FR2930618B1 (en) * 2008-04-24 2013-01-18 Saipem Sa INERTIA TRANSITION DRIVING ELEMENT FOR RECOVERING RIGID UNDERWATER DRIVING
AU2014391862B2 (en) * 2014-04-25 2017-07-13 Nkt Hv Cables Ab Bend stiffener with bend indication
US9217300B1 (en) * 2014-11-21 2015-12-22 Technip France Subsea riser support and method for bridging escarpments
CN113883339A (en) * 2021-09-29 2022-01-04 上海外高桥造船有限公司 Seawater lifting pipe and manufacturing method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3605413A (en) * 1969-10-24 1971-09-20 North American Rockwell Riser with a rigidity varying lower portion
FR2397084A1 (en) * 1977-07-06 1979-02-02 Inst Francais Du Petrole Suspension point for submarine cables and lines - provides progressive stiffening of cable using thermoplastic sleeves
US4854781A (en) * 1987-06-18 1989-08-08 Institut Francais Du Petrole Variable rigidity element for transfer column foot
US5683205A (en) * 1995-04-28 1997-11-04 Deep Oil Technology, Inc. Stress relieving joint for pipe and method
FR2760813A1 (en) * 1997-03-14 1998-09-18 Coflexip DEVICE FOR CURVING A FLEXIBLE PIPE

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3605413A (en) * 1969-10-24 1971-09-20 North American Rockwell Riser with a rigidity varying lower portion
FR2397084A1 (en) * 1977-07-06 1979-02-02 Inst Francais Du Petrole Suspension point for submarine cables and lines - provides progressive stiffening of cable using thermoplastic sleeves
US4854781A (en) * 1987-06-18 1989-08-08 Institut Francais Du Petrole Variable rigidity element for transfer column foot
US5683205A (en) * 1995-04-28 1997-11-04 Deep Oil Technology, Inc. Stress relieving joint for pipe and method
FR2760813A1 (en) * 1997-03-14 1998-09-18 Coflexip DEVICE FOR CURVING A FLEXIBLE PIPE

Also Published As

Publication number Publication date
NO984975D0 (en) 1998-10-26
NO984975L (en) 1999-04-28
OA10906A (en) 2001-10-11
AU8950298A (en) 1999-05-13
FI982309A0 (en) 1998-10-26
BR9804215A (en) 1999-12-28
EP0911482A2 (en) 1999-04-28
NO319687B1 (en) 2005-09-05
EP0911482B1 (en) 2004-10-20
FI982309A (en) 1999-04-28

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