GB1435283A - Offshore platform - Google Patents

Offshore platform

Info

Publication number
GB1435283A
GB1435283A GB4126074A GB4126074A GB1435283A GB 1435283 A GB1435283 A GB 1435283A GB 4126074 A GB4126074 A GB 4126074A GB 4126074 A GB4126074 A GB 4126074A GB 1435283 A GB1435283 A GB 1435283A
Authority
GB
United Kingdom
Prior art keywords
legs
guides
sections
diaphragms
site
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
GB4126074A
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.)
ExxonMobil Upstream Research Co
Original Assignee
Exxon Production Research 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
Priority claimed from US402661A external-priority patent/US3859806A/en
Application filed by Exxon Production Research Co filed Critical Exxon Production Research Co
Publication of GB1435283A publication Critical patent/GB1435283A/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
    • E02B17/027—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 steel 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
    • E02B2017/0039—Methods for placing the offshore structure
    • 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
    • E02B2017/0039—Methods for placing the offshore structure
    • E02B2017/0047—Methods for placing the offshore structure using a barge

Abstract

1435283 Offshore platforms EXXON PRODUCTION RESEARCH CO 23 Sept 1974 [1 Oct 1973] 41260/74 Heading E1H An offshore platform has a jacket made in upper and lower sections 11, 14 which are connected together on site and then sunk to the seabed. Each section is transported to the site, for example by barge and launched, it being arranged to float with some of the legs breaking the surface only. The corresponding legs, e.g. 20A, of the two sections are brought together, for example by winch and flanged joints 22 are bolted together. The sections are aligned with the aid of conical latched guides 74, 74', preferably arranged so that the underwater guide or guides engage before the guides on the surface. Having been assembled, the joints 22 are welded by welders who enter the jackets through access tubes 70' 72'. The legs have diaphragms 40, 41 which prevent water entering; these diaphragms are ruptured later by piles driven along the legs in pile guides 50. The jacket is finally ballasted by opening seacocks 43, so that it settles on the sea bed.
GB4126074A 1973-10-01 1974-09-23 Offshore platform Expired GB1435283A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US402661A US3859806A (en) 1972-09-05 1973-10-01 Offshore platform

Publications (1)

Publication Number Publication Date
GB1435283A true GB1435283A (en) 1976-05-12

Family

ID=23592826

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4126074A Expired GB1435283A (en) 1973-10-01 1974-09-23 Offshore platform

Country Status (2)

Country Link
GB (1) GB1435283A (en)
NO (1) NO145079C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2225365A (en) * 1988-11-15 1990-05-30 Norwegian Contractors Building and installing offshore gravity platforms

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2225365A (en) * 1988-11-15 1990-05-30 Norwegian Contractors Building and installing offshore gravity platforms
GB2225365B (en) * 1988-11-15 1992-11-04 Norwegian Contractors Method for construction of offshore gravity platforms and installation of such on a sea bottom by means of cranes

Also Published As

Publication number Publication date
NO145079C (en) 1982-01-06
NO743419L (en) 1975-04-28
NO145079B (en) 1981-09-28
AU7364774A (en) 1976-04-01

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee