SE8504909L - SEMI-SUBMERSIBLE DRILLING UNIT WITH CYLINDRICAL RING FLOATS - Google Patents

SEMI-SUBMERSIBLE DRILLING UNIT WITH CYLINDRICAL RING FLOATS Download PDF

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Publication number
SE8504909L
SE8504909L SE8504909A SE8504909A SE8504909L SE 8504909 L SE8504909 L SE 8504909L SE 8504909 A SE8504909 A SE 8504909A SE 8504909 A SE8504909 A SE 8504909A SE 8504909 L SE8504909 L SE 8504909L
Authority
SE
Sweden
Prior art keywords
columns
semi
drilling unit
submersible drilling
cylindrical ring
Prior art date
Application number
SE8504909A
Other languages
Swedish (sv)
Other versions
SE464807B (en
SE8504909D0 (en
Inventor
J S Pawlowski
Original Assignee
Canadian Patents Dev
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 Canadian Patents Dev filed Critical Canadian Patents Dev
Publication of SE8504909D0 publication Critical patent/SE8504909D0/en
Publication of SE8504909L publication Critical patent/SE8504909L/en
Publication of SE464807B publication Critical patent/SE464807B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B35/4413—Floating drilling platforms, e.g. carrying water-oil separating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
    • B63B1/107—Semi-submersibles; Small waterline area multiple hull vessels and the like, e.g. SWATH
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
    • B63B39/02—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by displacement of masses

Landscapes

  • Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Earth Drilling (AREA)
  • Bridges Or Land Bridges (AREA)
  • Packages (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)

Abstract

There is described a vessel such as a semi-submersible drilling unit having a drilling deck structure with a plurality of columns depending from the deck. Pontoons are provided at the ends of the columns and a buoyant configuration modifying sleeve-like element is mounted around the columns. The sleeves are annular in cross-section and of generally cylindrical form and terminate at their lower ends in cuffs of reducing outer diameter. This provides an inwardly tapered or curved end to the sleeve. A cable and pulley arrangement is provided for vertically moving the sleeves along the columns and for locating them on the columns close to the unit transit waterplane and at a survival waterplane position. <IMAGE>
SE8504909A 1984-10-22 1985-10-18 PARTICULARLY SUBMISSIBLE VESSELS, SUCH AS A DRILL, WITH STABILIZING FLOATS AND PROCEDURES TO STABILIZE SUCH VESSELS SE464807B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000466002A CA1250491A (en) 1984-10-22 1984-10-22 Semi-submersible drilling unit with cylindrical ring floats

Publications (3)

Publication Number Publication Date
SE8504909D0 SE8504909D0 (en) 1985-10-18
SE8504909L true SE8504909L (en) 1986-04-23
SE464807B SE464807B (en) 1991-06-17

Family

ID=4128964

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8504909A SE464807B (en) 1984-10-22 1985-10-18 PARTICULARLY SUBMISSIBLE VESSELS, SUCH AS A DRILL, WITH STABILIZING FLOATS AND PROCEDURES TO STABILIZE SUCH VESSELS

Country Status (7)

Country Link
JP (1) JPS61166793A (en)
KR (1) KR940002945B1 (en)
CA (1) CA1250491A (en)
FR (1) FR2572049B1 (en)
GB (1) GB2166090B (en)
NO (1) NO173691C (en)
SE (1) SE464807B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE460843B (en) * 1987-01-23 1989-11-27 Goetaverken Arendal Ab STABILITY SEARCH AND MOVEMENT PREVENTION OF FLOATING VESSELS
FR2970695B1 (en) * 2011-01-25 2013-01-04 Dcns FLOATING SUPPORT FOR OFFSHORE STRUCTURE OF WIND TYPE
KR101411517B1 (en) * 2012-07-05 2014-06-27 삼성중공업 주식회사 Leg protection apparatus of floating structure
CN102765466B (en) * 2012-07-27 2016-07-06 北京金风科创风电设备有限公司 Semi-submersible offshore floating fan foundation
EP2993345B1 (en) 2013-04-01 2018-03-21 Nippon Steel & Sumitomo Metal Corporation Floating structure
KR101487286B1 (en) * 2013-08-16 2015-01-30 삼성중공업 주식회사 Semisubmersible structure

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1021824A (en) * 1961-09-30 1966-03-09 Alain Jean Robert Godefroy Improvements in or relating to self-expandable telescopic devices
GB1065216A (en) * 1964-10-30 1967-04-12 Alden James Laborde Platform for afloat-condition drilling
US3919957A (en) * 1974-04-15 1975-11-18 Offshore Co Floating structure and method of recovering anchors therefor
DE2421150C3 (en) * 1974-05-02 1979-01-25 Erno Raumfahrttechnik Gmbh, 2800 Bremen Semi-submersible carrier platform
US4077076A (en) * 1976-04-28 1978-03-07 Masters John L Anchor light
IL66064A (en) * 1981-06-22 1985-08-30 Adragem Ltd Semi-submersible marine platform
NO823489L (en) * 1982-10-20 1984-04-24 Kvaerner Eng LIQUID OFFSHORE PLATFORM.

Also Published As

Publication number Publication date
KR860003138A (en) 1986-05-21
GB2166090B (en) 1988-03-30
NO173691C (en) 1994-01-19
SE464807B (en) 1991-06-17
FR2572049A1 (en) 1986-04-25
SE8504909D0 (en) 1985-10-18
CA1250491A (en) 1989-02-28
FR2572049B1 (en) 1987-07-24
NO173691B (en) 1993-10-11
GB2166090A (en) 1986-04-30
KR940002945B1 (en) 1994-04-09
JPS61166793A (en) 1986-07-28
GB8525476D0 (en) 1985-11-20
NO854200L (en) 1986-04-23

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