System for production of hydrocarbons

B - Operations – Transporting – 63 – B

Patent

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Details

B63B 21/50 (2006.01) B63B 21/38 (2006.01) B63B 25/08 (2006.01) B63B 27/24 (2006.01) E21B 17/01 (2006.01)

Patent

CA 2246670

System and production of hydrocarbons at sea by employing a moored production ship, whereby the ship concerned is equipped with mooring means preferably at the bow portion thereof, and with at least one connection unit for a production riser from the seabed, and where there is included an anchor located at the seabed, and at least one anchor line adapted to connect the anchor to said mooring. means, there being provided a permanent anchor preferably in the form of a suction anchor gravitation anchor or pile anchor, being provided with swivel means for said anchoring line, preferably with a buoyant body attached at a middle portion of the anchoring line, and whereby the riser is in the form of at least one flexible hose the lower of which is connected to said swivel means, which in a manner known per se comprises at least two passages for hydrocarbons.

Système pour la production d'hydrocarbures en mer à l'aide d'un navire de production amarré (10). Le navire (10) en question est équipé de moyens d'amarrage (11), de préférence au niveau de sa proue, et d'au moins une unité de raccordement pour un tube prolongateur s'étendant à partir du fond marin. On a prévu une ancre (3) située au fond (1) de la mer, et au moins une amarre (6, 8) adaptée pour relier l'ancre (3) auxdits moyens d'amarrage (11) à bord du navire (10). Un dispositif d'ancrage permanent, de préférence sous forme d'ancre à aspiration (3, 63), d'ancre à gravité ou de pile d'ancrage, est pourvu de moyens pivotants (5, 70) pour ladite amarre (6, 8), un corps flottant (7) étant de préférence fixé à la partie intermédiaire de l'amarre (6, 8). Ledit tube prolongateur se présente de préférence sous la forme d'au moins un tuyau souple (9, 84) dont l'extrémité inférieure est reliée auxdits moyens pivotants (5, 70) et qui comporte, de manière connue en soi, au moins deux passages (79A-C) pour les hydrocarbures et éventuellement d'autres fluides.

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