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1. (WO1997017496) OFFSHORE EXPLORATION OR PRODUCTION OPERATION
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/017496 International Application No.: PCT/GB1996/002707
Publication Date: 15.05.1997 International Filing Date: 05.11.1996
IPC:
B63B 9/06 (2006.01) ,E02B 17/02 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
63
SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
B
SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
9
Methods of designing, building, maintaining, converting, refitting, repairing, or determining properties of, vessels, not otherwise provided for
06
Methods of building hulls
E FIXED CONSTRUCTIONS
02
HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING
B
HYDRAULIC ENGINEERING
17
Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs; Construction methods therefor
02
placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
Applicants:
BRITISH GAS PLC [GB/GB]; Rivermill House 152 Grosvenor Road London SW1V 3JL, GB (AllExceptUS)
BONE, David [GB/GB]; GB
HEYWOOD, Christopher [GB/GB]; GB
HOLLIS, Andrew, Patrick [GB/GB]; GB (UsOnly)
Inventors:
BONE, David; GB
HEYWOOD, Christopher; GB
HOLLIS, Andrew, Patrick; GB
Agent:
MORGAN, David, J.; British Gas plc Intellectual Property Dept. 100 Thames Valley Park Reading Berkshire RG6 1PT, GB
Priority Data:
9522722.906.11.1995GB
Title (EN) OFFSHORE EXPLORATION OR PRODUCTION OPERATION
(FR) OPERATION D'EXPLORATION OU DE PRODUCTION OFFSHORE
Abstract:
(EN) Apparatus for providing an offshore drilling operation in a sea, the apparatus comprising a drilling derrick support structure (2) having a base (4) to rest on the sea-floor (5) and a deck (7) to support a drilling derrick (1), the structure being in the form of a concrete block (2) having a hollow cavity to enable the block (2) to be floated to the site where drilling is to take place and being adapted to receive ballast into the cavity in such a way and in a sufficient quantity as to cause the block (2) to sink base-first and rest upon the sea-bed with the deck (7) clear of the surface of the sea, a drilling derrick (1) for mounting on the deck (7) of the block (2) and a tender assist barge (3) for transport to the site in down to 2m of water to provide services, supplies and equipement to the drilling derrick (1).__________________________________________________________________________________
(FR) Appareil destiné à une opération de forage en mer, constitué d'une structure de support de tour de forage (2) présentant une base (4) destinée à reposer sur le fond marin (5), et d'un pont (7) destiné à recevoir une tour de forage (1), cette structure prenant la forme d'un bloc de béton (2) comportant une cavité permettant au bloc (2) d'être acheminé par flottage jusqu'au site où le forage doit avoir lieu. La structure est conçue pour recevoir du ballast dans la cavité de façon appropriée et en quantité suffisante pour que le bloc (2) coule par la base et aille reposer sur le fond marin, le pont (7) restant au-dessus de la surface de la mer. Une tour de forage (1) est montée sur le pont (7) du bloc (2) et une barge annexe (3) assure le transport jusqu'au site, dans une eau d'une profondeur de 2 m au plus, pour apporter des services, fournitures et matériels à la tour de forage (1).
Designated States: CA, KZ, NO, RU, US
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
NO19973058EP0800600RU02139220US6276876CA2208976GB2306920