GB1523585A - Offshore platforms - Google Patents

Offshore platforms

Info

Publication number
GB1523585A
GB1523585A GB4646874A GB4646874A GB1523585A GB 1523585 A GB1523585 A GB 1523585A GB 4646874 A GB4646874 A GB 4646874A GB 4646874 A GB4646874 A GB 4646874A GB 1523585 A GB1523585 A GB 1523585A
Authority
GB
United Kingdom
Prior art keywords
base
deck
caisson
columns
sunk
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.)
Expired
Application number
GB4646874A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB4646874A priority Critical patent/GB1523585A/en
Publication of GB1523585A publication Critical patent/GB1523585A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
    • E02B17/021—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto with relative movement between supporting construction and platform
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B2017/0056—Platforms with supporting legs
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B2017/0056—Platforms with supporting legs
    • E02B2017/0069—Gravity structures
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B2017/0056—Platforms with supporting legs
    • E02B2017/0073—Details of sea bottom engaging footing
    • E02B2017/0086—Large footings connecting several legs or serving as a reservoir for the storage of oil or gas

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Revetment (AREA)
  • Foundations (AREA)

Abstract

1523585 Installing offshore structures R W BREWERTON 28 Oct 1975 [28 Oct 1974 1 July 1975] 46468/74 and 27729/75 Heading E1H To maintain the second moment of area of the water plane of an offshore structure and thereby its stability whilst its base part is being submerged, the offshore structure includes a caisson which supports the deck at its predetermined working height above the water level whilst the base part is being submerged. Subsequently the deck is attached to one or more support columns and the caisson is either sunk to the base part or removed for re-use. The base may be used as storage tanks. In one embodiment of the offshore structure a caisson 6 is located between support column 3 which extend upwardly from a base 2 and slidably pass through apertures in a deck 4. The deck 4 is supported at its predetermined height above the water level by. a support structure 5. After the base 2 has been ballasted and sunk on to the sea bed, the deck 4 is connected to the columns 3 and the caisson 6 is removed. In modifications of this embodiment (not shown) the base 2 is annular and surrounds a caisson which is finally sunk to the sea floor to form part of the base of the structure. In another construction (Figure 9) a gravity platform comprises three hollow base parts 12 which are interconnected by perforated walls 13. Each part 12 supports a caisson formed by upper and lower parts 14b, 14a and a support column 15 extends upwardly through a respective caisson 14 and a collar 18 connected to a deck 17. The deck is finally attached to the columns 15 by cooperation of the collars 18 with flanges 16 on the upper ends of the columns 15.
GB4646874A 1975-10-28 1975-10-28 Offshore platforms Expired GB1523585A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4646874A GB1523585A (en) 1975-10-28 1975-10-28 Offshore platforms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4646874A GB1523585A (en) 1975-10-28 1975-10-28 Offshore platforms

Publications (1)

Publication Number Publication Date
GB1523585A true GB1523585A (en) 1978-09-06

Family

ID=10441399

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4646874A Expired GB1523585A (en) 1975-10-28 1975-10-28 Offshore platforms

Country Status (1)

Country Link
GB (1) GB1523585A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2134951A (en) * 1983-02-16 1984-08-22 Combustion Eng Flotatable offshore production structure and method for fabrication transport and installation of same
EP0352204A1 (en) * 1988-07-22 1990-01-24 Henri Poels Method and device for securing landing-stages on piles
GB2314576A (en) * 1996-06-27 1998-01-07 Kvaerner Oil & Gas Ltd Offshore platform assembly
FR2779408A1 (en) * 1998-06-08 1999-12-10 Doris Engineering METHOD OF INSTALLING A SELF-LIFTING GRAVITY PLATFORM FOR THE OPERATION OF AN OIL FIELD AT SEA
FR2798683A1 (en) 1999-09-17 2001-03-23 Doris Engineering Installation of petroleum production platform is carried out by loading onto transport ship such that weights of platform substructure and bridge are each separately supported

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2134951A (en) * 1983-02-16 1984-08-22 Combustion Eng Flotatable offshore production structure and method for fabrication transport and installation of same
EP0352204A1 (en) * 1988-07-22 1990-01-24 Henri Poels Method and device for securing landing-stages on piles
FR2634504A1 (en) * 1988-07-22 1990-01-26 Poels Henri METHOD AND DEVICE FOR IMPLANTATION ON BEDS OF APPEALS
GB2314576A (en) * 1996-06-27 1998-01-07 Kvaerner Oil & Gas Ltd Offshore platform assembly
GB2314576B (en) * 1996-06-27 2000-08-16 Kvaerner Oil & Gas Ltd Offshore platform assembly
FR2779408A1 (en) * 1998-06-08 1999-12-10 Doris Engineering METHOD OF INSTALLING A SELF-LIFTING GRAVITY PLATFORM FOR THE OPERATION OF AN OIL FIELD AT SEA
EP0963906A1 (en) * 1998-06-08 1999-12-15 Doris Engineering Method for the installation of a gravity, self-elevating oil production platform at sea
FR2798683A1 (en) 1999-09-17 2001-03-23 Doris Engineering Installation of petroleum production platform is carried out by loading onto transport ship such that weights of platform substructure and bridge are each separately supported

Similar Documents

Publication Publication Date Title
US2422168A (en) Marine tower and method of placing same
US4723875A (en) Deep water support assembly for a jack-up type platform
US3996754A (en) Mobile marine drilling unit
SE8600498D0 (en) SET TO INSTALL THE OBJECT OF A OFFSHORE PLATFORM AND EQUIPMENT TO PERFORM THE SET
CA1175246A (en) Offshore tower structures
US4648751A (en) Method and apparatus for erecting offshore platforms
SE7408777L (en)
GB1524423A (en) Method of erecting offshore structures and offshore tower construction therefor
US4126011A (en) Method of fabrication of offshore structures and offshore structures made according to the method
EP0039590A3 (en) Offshore platform and method of constructing, erecting and dismantling same
GB1498321A (en) Offshore foundation structure
GB1523585A (en) Offshore platforms
US3241324A (en) Mobile marine platform apparatus
GB1065216A (en) Platform for afloat-condition drilling
JP2606799B2 (en) Installation method of marine platform
US2873581A (en) Marine platform
GB1509503A (en) Marine drilling rig
GB2080860A (en) A process for mounting in relatively shallow or moderately deep water and installing at the work site a drilling and oil-production platform with base-weight.
SU882421A3 (en) Method of installing marine stationary platform on sea bottom
GB1533032A (en) Method for assembling and siting an off-shore structure
GB1512025A (en) Gravity platform and a method used in its construction
JP2661864B2 (en) Underwater caisson landing method
FR2264136A1 (en) Automatically lifting horizontal marine platform - is fixed into final position by a stiffening structure and vertical columns
JPS634110A (en) Method for setting offshore platform
GB1459829A (en) Offshore submersible structure of concrete

Legal Events

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