GB1135273A - A floatable rig and method of grounding the same - Google Patents

A floatable rig and method of grounding the same

Info

Publication number
GB1135273A
GB1135273A GB6665/66A GB666566A GB1135273A GB 1135273 A GB1135273 A GB 1135273A GB 6665/66 A GB6665/66 A GB 6665/66A GB 666566 A GB666566 A GB 666566A GB 1135273 A GB1135273 A GB 1135273A
Authority
GB
United Kingdom
Prior art keywords
rig
floats
cables
legs
posts
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
GB6665/66A
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.)
Verschure & Co S Scheepswerf E
Original Assignee
Verschure & Co S Scheepswerf E
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 Verschure & Co S Scheepswerf E filed Critical Verschure & Co S Scheepswerf E
Publication of GB1135273A publication Critical patent/GB1135273A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/02—Details
    • H01L31/0203—Containers; Encapsulations, e.g. encapsulation of photodiodes
    • 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
    • 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
    • E21B15/00—Supports for the drilling machine, e.g. derricks or masts
    • E21B15/003—Supports for the drilling machine, e.g. derricks or masts adapted to be moved on their substructure, e.g. with skidding means; adapted to drill a plurality of wells
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Power Engineering (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Bridges Or Land Bridges (AREA)
  • Revetment (AREA)
  • Earth Drilling (AREA)
  • Jib Cranes (AREA)

Abstract

1,135,273. Offshore structures. VERSCHURE & CO's. SCHEEPSWERF EN MACHINEFABRIEK N.V. 15 Feb., 1966 [17 Feb., 1965], No. 6665/66. Heading E1H. A buoyant offshore-platform, or rig, for drilling into the sea bed 21 comprises a framework 1 provided with vertical posts 5 having horizontally-orientated cylindrical floats 6 fixed thereto and retractable legs 7 therein, arms 9 carrying floats 10 being secured by hinges 8 to said posts, which arms are connected' by cables 15, 18 to rotatable drums 12, 13, respectively, on winches 11, so that they can be raised or lowered as required. In operation, the rig is first moored on site by cables 20 attached to the floats 6, and then the buoyancy of the floats 6 is reduced by pumping water into them until the rig is located at a distance from the sea bed according to the anticipated waveamplitude and the irregularity of the sea bed. Thereafter, the legs 7 are extended until they touch the sea bed while remaining free the move vertically relative to the posts. When the rig is elevated by the crest of a wave, the legs 7 are locked relative to the posts and the cables 18 are allowed to go slack suddenly so that the rig exerts a downward thrust on the legs and is thereby grounded satisfactorily, the arms 9 and floats 10 being subsequently raised by the cables 15 to a position 10' above the water. When the rig is being moved to or from the site, the floats 10 are lowered to an operative 'position and used as stabilisers. At least one horizontally-movable bridge-structure 3 is provided on the upper part of the rig. the or each structure being furnished with a derrick 4.
GB6665/66A 1965-02-17 1966-02-15 A floatable rig and method of grounding the same Expired GB1135273A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6501996A NL6501996A (en) 1965-02-17 1965-02-17

Publications (1)

Publication Number Publication Date
GB1135273A true GB1135273A (en) 1968-12-04

Family

ID=19792401

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6665/66A Expired GB1135273A (en) 1965-02-17 1966-02-15 A floatable rig and method of grounding the same

Country Status (4)

Country Link
US (1) US3429127A (en)
DE (1) DE1634651B2 (en)
GB (1) GB1135273A (en)
NL (1) NL6501996A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4041711A (en) * 1973-04-23 1977-08-16 Marine Engineering Co., C.A. Method and apparatus for quickly erecting off-shore platforms
GB2186901B (en) * 1986-02-24 1990-05-02 British Gas Plc Offshore platforms
NL1026301C2 (en) * 2004-06-01 2005-12-05 Heerema Marine Contractors Nl Method for raising a structure at least partially submerged in water.
CN102268967A (en) * 2010-06-04 2011-12-07 中国海洋石油总公司 Anti-collision protection device for drilling machine derrick
GB201714058D0 (en) * 2017-09-01 2017-10-18 Sllp 134 Ltd System for providing stability to a flaoting offshore structure
GB2583597B (en) * 2018-01-24 2021-06-16 Tugdock Ltd Floating dry dock assembly
GB2570453B (en) * 2018-01-24 2020-07-29 Tugdock Ltd Floating deck assembly

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3118283A (en) * 1964-01-21 Xkilling barge
US2525955A (en) * 1947-03-21 1950-10-17 Harold W Scott Apparatus for submarine drilling
US2895300A (en) * 1953-07-22 1959-07-21 John T Hayward Method and apparatus for stabilizing submersible vessels
US2938352A (en) * 1954-12-13 1960-05-31 Jersey Prod Res Co Deep water recoverable drilling platform
US2846851A (en) * 1955-01-21 1958-08-12 Pelham George Fred Marine apparatus
US3289419A (en) * 1964-02-03 1966-12-06 Camco Inc Sea raft

Also Published As

Publication number Publication date
NL6501996A (en) 1966-08-18
DE1634651A1 (en) 1970-09-17
DE1634651B2 (en) 1976-11-04
US3429127A (en) 1969-02-25

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