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Machine translation
1. (WO1981003157) SUBMERGED BUOYANT OFFSHORE DRILLING AND PRODUCTION TOWER
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/003157    International Application No.:    PCT/US1981/000531
Publication Date: 12.11.1981 International Filing Date: 23.04.1981
IPC:
E21B 17/01 (2006.01), E21B 7/128 (2006.01)
Applicants:
Inventors:
Priority Data:
146362 02.05.1980 US
Title (EN) SUBMERGED BUOYANT OFFSHORE DRILLING AND PRODUCTION TOWER
(FR) FORAGE OFFSHORE SUBMERGE FLOTTABLE ET PLATE-FORME DE PRODUCTION
Abstract: front page image
(EN)A submerged tubular tower (10) is connected at its lower end (15) to an ocean floor (11) at a site where at least one subsea hydrocarbon well is to be drilled. A riser duct (22) for each well to be drilled extends from an upwardly accessible connection point (20) at the upper end (14) of the tower to the lower end of the tower. The tower is positively buoyant to stand erect in an unguyed manner. The upper end of the tower is located at a substantial distance above the ocean floor at a depth sufficiently small to enable wells to be drilled through the riser ducts, through equipment (19) landed on the top of the tower, using floating drilling equipment (12) designed for use in substantially shallower water depths.
(FR)Une tour tubulaire (10) submergee est connectee a son extremite inferieure (15) au fond de l'ocean (11) a un endroit ou l'on doit executer au moins un forage de puits sous-marins d'hydrocarbures. Une conduite (22) de montee pour chaque puits a forer s'etend d'un point de connexion (20) accessible vers le haut a l'extremite superieure (14) de la tour jusqu'a l'extremite inferieure de la tour. La tour est flottable positivement de maniere a pouvoir rester verticale sans cables de retenue. L'extremite superieure de la tour est situee a une distance considerable au-dessus du fond de l'ocean a une profondeur suffisamment faible pour permettre le forage des puits au travers des conduites de montee, au moyen de l'outillage (19) dispose sur le sommet de la tour, en utilisant un outillage (12) de forage flottant destine a etre utilise dans des eaux sensiblement peu profondes.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)