GB2017793A - Offshore structure - Google Patents

Offshore structure

Info

Publication number
GB2017793A
GB2017793A GB7902464A GB7902464A GB2017793A GB 2017793 A GB2017793 A GB 2017793A GB 7902464 A GB7902464 A GB 7902464A GB 7902464 A GB7902464 A GB 7902464A GB 2017793 A GB2017793 A GB 2017793A
Authority
GB
United Kingdom
Prior art keywords
conical portion
ice
angle
lower conical
inclination
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
GB7902464A
Other versions
GB2017793B (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.)
Chevron USA Inc
Original Assignee
Chevron Research and Technology Co
Chevron 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
Application filed by Chevron Research and Technology Co, Chevron Research Co filed Critical Chevron Research and Technology Co
Publication of GB2017793A publication Critical patent/GB2017793A/en
Application granted granted Critical
Publication of GB2017793B publication Critical patent/GB2017793B/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
    • E02B17/0017—Means for protecting offshore constructions
    • E02B17/0021—Means for protecting offshore constructions against ice-loads

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)
  • Organic Insulating Materials (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Insulated Conductors (AREA)

Abstract

An offshore structure, such as a drilling platform, which is able to withstand the ice forces imposed thereon by impinging ice sheets and other larger masses of ice is provided with an upper conical portion 6 coaxially positioned relative to a lower conical portion 4. The surfaces forming the walls of both the upper and lower conical portions are inclined at an angle to the horizontal to receive ice masses moving into contact with the structure. The angle of inclination from the horizontal of the surface of the upper conical portion is greater than the angle of inclination of the surface of the lower conical portion and the maximum cross-sectional diameter of the upper conical portion is less than that at the top of the lower conical portion, ie. the minimum cross-sectional diameter of the lower portion, so that there exists a step-like surface 200 between the bottom of the upper conical portion and the top of the lower conical portion. <IMAGE>
GB7902464A 1978-03-29 1979-01-24 Offshore structure Expired GB2017793B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US89142278A 1978-03-29 1978-03-29

Publications (2)

Publication Number Publication Date
GB2017793A true GB2017793A (en) 1979-10-10
GB2017793B GB2017793B (en) 1982-05-19

Family

ID=25398152

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7902464A Expired GB2017793B (en) 1978-03-29 1979-01-24 Offshore structure

Country Status (5)

Country Link
JP (1) JPS5913612B2 (en)
CA (1) CA1127406A (en)
GB (1) GB2017793B (en)
NO (1) NO153505C (en)
SE (1) SE438692B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4325655A (en) 1980-01-16 1982-04-20 Exxon Production Research Company Multiple slope structure
US5383748A (en) * 1991-06-19 1995-01-24 Kvaerner Earl And Wright (A Division Of Kvaerner H&G Offshore Ltd.) Offshore structure and installation method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62128104U (en) * 1986-02-04 1987-08-13

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5364901A (en) * 1976-11-24 1978-06-09 Mitsui Shipbuilding Eng Ice crusher for structure used in icy waters

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4325655A (en) 1980-01-16 1982-04-20 Exxon Production Research Company Multiple slope structure
US5383748A (en) * 1991-06-19 1995-01-24 Kvaerner Earl And Wright (A Division Of Kvaerner H&G Offshore Ltd.) Offshore structure and installation method

Also Published As

Publication number Publication date
SE7900193L (en) 1979-09-30
CA1127406A (en) 1982-07-13
JPS54133701A (en) 1979-10-17
GB2017793B (en) 1982-05-19
NO791019L (en) 1980-01-22
NO153505C (en) 1986-04-02
SE438692B (en) 1985-04-29
NO153505B (en) 1985-12-23
JPS5913612B2 (en) 1984-03-30

Similar Documents

Publication Publication Date Title
GB2017794A (en) Offshore Structure
GB2017793A (en) Offshore structure
JPS541560A (en) Cargo work device of container
JPS5758088A (en) Heat transfer pipe
SE8207039D0 (en) MOLTEN METAL FLOAT
JPS56135609A (en) Construction of offshore structure
JPS5625092A (en) Light beacon
DK107379A (en) OFFSHORE CONSTRUCTION FOR USE IN WATER AREAS CONTAINING ICE
GB2018700A (en) Ballasting system for an offshore structure
JPS5522510A (en) Small size vessel
JPS5592833A (en) Method of insulating heat in heat accumulator
JPS579563A (en) Continuous casting device
JPS56124591A (en) Ship
JPS558915A (en) Device for anchoring float
JPS57232A (en) Underground depository under floor
GB2021665A (en) Method of erecting an offshore structure
JPS56157680A (en) Method and equipment for building large-sized structure
JPS5392493A (en) Laying method of drawn cable from floating island
JPS52118796A (en) Method of converting ship body into floating dock
JPS5255144A (en) Elevator
JPS5686881A (en) Mooring method of tensely moored platform
JPS5520831A (en) Structure for icy water
JPS53140799A (en) Device for dropping heavy article from floating structure into water
JPS5697008A (en) Windbreak device for floating body
JPS558933A (en) Elevating device of supplementary bodies on bottom surface of stern

Legal Events

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

Effective date: 19940124