GB1221871A - A semi-submersible floating structure - Google Patents

A semi-submersible floating structure

Info

Publication number
GB1221871A
GB1221871A GB00939/68A GB1093968A GB1221871A GB 1221871 A GB1221871 A GB 1221871A GB 00939/68 A GB00939/68 A GB 00939/68A GB 1093968 A GB1093968 A GB 1093968A GB 1221871 A GB1221871 A GB 1221871A
Authority
GB
United Kingdom
Prior art keywords
caissons
platform
axis
march
columns
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
GB00939/68A
Inventor
Guy Bonnafous
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.)
IFP Energies Nouvelles IFPEN
Original Assignee
IFP Energies Nouvelles IFPEN
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 IFP Energies Nouvelles IFPEN filed Critical IFP Energies Nouvelles IFPEN
Publication of GB1221871A publication Critical patent/GB1221871A/en
Expired legal-status Critical Current

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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D489/00—Heterocyclic compounds containing 4aH-8, 9 c- Iminoethano-phenanthro [4, 5-b, c, d] furan ring systems, e.g. derivatives of [4, 5-epoxy]-morphinan of the formula:
    • C07D489/02—Heterocyclic compounds containing 4aH-8, 9 c- Iminoethano-phenanthro [4, 5-b, c, d] furan ring systems, e.g. derivatives of [4, 5-epoxy]-morphinan of the formula: with oxygen atoms attached in positions 3 and 6, e.g. morphine, morphinone
    • C07D489/04—Salts; Organic complexes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

1,221,871. Floating offshore structure; boring earth &c. INSTITUT FRANCAIS DU PETROLE DES CARBURANTS ET LUBRIFIANTS. 6 March, 1968 [6 March, 1967], No. 10939/68. Headings E1F and E1H. A semi-submersible floating structure for offshore drilling operations includes streamlined caissons such as 5, 6, 7 located at the a pices of a regular polygon having at least three sides, the caissons having a common direction of orientation parallel to an axis of symmetry XX' of the polygon and being interconnected by cross-bracing members 8, 9, 10. Columns 2, 3, 4 integral with the caissons support a platform 1 which is a hollow structure having an acrodynamic flattened shape which is substantially a surface of revolution around vertical axis ZZ'. In the structure shown platform 1 is an ellipsoid of .revolution the small axis of which is vertical and the regular polygon is an equilateral triangle. Caissons 5, 6, 7 are provided with units 12, 13, 14 respectively for propulsion in their longitudinal direction and with units 15, 16, 17 respectively for transverse propulsion so that the structure may be dynamically anchored. Derrick 41 is located on the vertical axis ZZ' of platform 1 and the platform includes a rotation table and an annular plate 43 rotated by motor 45. Columns 2, 3, 4 may be used for stacking the elements of a drill string, Fig. 4 (not shown).
GB00939/68A 1967-03-06 1968-03-06 A semi-submersible floating structure Expired GB1221871A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR97638A FR1605251A (en) 1967-03-06 1967-03-06

Publications (1)

Publication Number Publication Date
GB1221871A true GB1221871A (en) 1971-02-10

Family

ID=8626446

Family Applications (1)

Application Number Title Priority Date Filing Date
GB00939/68A Expired GB1221871A (en) 1967-03-06 1968-03-06 A semi-submersible floating structure

Country Status (6)

Country Link
BE (1) BE711414A (en)
ES (1) ES351260A1 (en)
FR (2) FR2389M (en)
GB (1) GB1221871A (en)
NL (1) NL6802992A (en)
OA (1) OA02744A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2465638A2 (en) * 1979-09-21 1981-03-27 Laukien Guenther DUAL HULL MARINE VEHICLE ALLOWING MOVEMENT AND WORK IN SURFACE POSITION OR IN SEMI-UNDERWATER POSITION, AS WELL AS IN FULLY UNDERWATER POSITION
GB2152440A (en) * 1983-12-09 1985-08-07 J R T Consultants Multihulled vessel
US4615292A (en) * 1978-03-23 1986-10-07 Laukien Gunther R Submersible twin-hull watercraft

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3653349A (en) * 1970-05-18 1972-04-04 Ocean Drilling Exploration Self-propelled semi-submersible drilling rig

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4615292A (en) * 1978-03-23 1986-10-07 Laukien Gunther R Submersible twin-hull watercraft
FR2465638A2 (en) * 1979-09-21 1981-03-27 Laukien Guenther DUAL HULL MARINE VEHICLE ALLOWING MOVEMENT AND WORK IN SURFACE POSITION OR IN SEMI-UNDERWATER POSITION, AS WELL AS IN FULLY UNDERWATER POSITION
GB2152440A (en) * 1983-12-09 1985-08-07 J R T Consultants Multihulled vessel

Also Published As

Publication number Publication date
FR1605251A (en) 1973-11-02
NL6802992A (en) 1968-09-09
ES351260A1 (en) 1969-06-01
BE711414A (en) 1968-07-01
OA02744A (en) 1970-12-15
FR2389M (en) 1964-03-09

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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