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GB2019471A - Vertically Moored Platform Anchoring - Google Patents

Vertically Moored Platform Anchoring

Info

Publication number
GB2019471A
GB2019471A GB7912425A GB7912425A GB2019471A GB 2019471 A GB2019471 A GB 2019471A GB 7912425 A GB7912425 A GB 7912425A GB 7912425 A GB7912425 A GB 7912425A GB 2019471 A GB2019471 A GB 2019471A
Authority
GB
United Kingdom
Prior art keywords
anchoring
riser pipe
strings
floating vessel
outer riser
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
GB7912425A
Other versions
GB2019471B (en
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.)
Standard Oil Co
Original Assignee
Standard Oil Co
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 Standard Oil Co filed Critical Standard Oil Co
Publication of GB2019471A publication Critical patent/GB2019471A/en
Application granted granted Critical
Publication of GB2019471B publication Critical patent/GB2019471B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/12—Underwater drilling
    • E21B7/128—Underwater drilling from floating support with independent underwater anchored guide base

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Ocean & Marine Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Earth Drilling (AREA)
  • Revetment (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)

Abstract

In a system for anchoring a floating vessel which is anchored only by parallel and essentially vertical conduits the anchoring load is carried by units of concentric pipes including an outer riser pipe 24 and inner strings of casing 78, 80. Drilling wells and/or production of oil and gas or like these casings. Means are provided for transmitting the tension of the inner casing strings 78, 80 to the floating vessel through the upper end of the outer riser pipe 24. Means are also provided to prevent excessive buildup of stresses in the upper end of the inner casing due to the bending caused by the excursion caused by the waves, the wind, and the current. <IMAGE>
GB7912425A 1978-04-24 1979-04-09 Vertically moored platform anchoring Expired GB2019471B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US89960878A 1978-04-24 1978-04-24

Publications (2)

Publication Number Publication Date
GB2019471A true GB2019471A (en) 1979-10-31
GB2019471B GB2019471B (en) 1982-05-19

Family

ID=25411281

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7912425A Expired GB2019471B (en) 1978-04-24 1979-04-09 Vertically moored platform anchoring

Country Status (11)

Country Link
JP (1) JPS6027798B2 (en)
CA (1) CA1126038A (en)
DE (1) DE2916561A1 (en)
ES (1) ES479874A1 (en)
FR (1) FR2424182A1 (en)
GB (1) GB2019471B (en)
IE (1) IE48134B1 (en)
IT (1) IT1115997B (en)
NL (1) NL7903164A (en)
NO (1) NO149238C (en)
SG (1) SG45682G (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995017576A1 (en) * 1993-12-20 1995-06-29 Shell Internationale Research Maatschappij B.V. Dual concentric string high pressure riser

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4293146A (en) * 1978-10-04 1981-10-06 Standard Oil Company (Indiana) VMP Casing tieback
US4422806A (en) * 1981-02-17 1983-12-27 Chevron Research Company Sliding tension leg tower
FR2507146A1 (en) * 1981-06-05 1982-12-10 Tim Tech Ind Minieres MARINE PLATFORM, ESPECIALLY DRILLING, AND RELATED PLACING METHOD
JPH0645924B2 (en) * 1987-11-12 1994-06-15 鹿島建設株式会社 Offshore structure

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3648638A (en) * 1970-03-09 1972-03-14 Amoco Prod Co Vertically moored platforms
US3827486A (en) * 1972-03-17 1974-08-06 Brown Oil Tools Well reentry system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995017576A1 (en) * 1993-12-20 1995-06-29 Shell Internationale Research Maatschappij B.V. Dual concentric string high pressure riser
US5533574A (en) * 1993-12-20 1996-07-09 Shell Oil Company Dual concentric string high pressure riser
GB2299355A (en) * 1993-12-20 1996-10-02 Shell Int Research Dual concentric string high pressure riser
GB2299355B (en) * 1993-12-20 1997-06-11 Shell Int Research Dual concentric string high pressure riser

Also Published As

Publication number Publication date
DE2916561A1 (en) 1979-10-31
FR2424182A1 (en) 1979-11-23
GB2019471B (en) 1982-05-19
IE48134B1 (en) 1984-10-03
NL7903164A (en) 1979-10-26
NO791346L (en) 1979-10-25
JPS6027798B2 (en) 1985-07-01
CA1126038A (en) 1982-06-22
JPS54142795A (en) 1979-11-07
IE790825L (en) 1979-10-24
IT7948756A0 (en) 1979-04-17
FR2424182B1 (en) 1984-12-14
IT1115997B (en) 1986-02-10
SG45682G (en) 1983-02-25
NO149238C (en) 1984-03-14
NO149238B (en) 1983-12-05
ES479874A1 (en) 1980-01-16

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee