E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 34/16 (2006.01) E21B 23/02 (2006.01)
Patent
CA 2616501
The invention relates to a safety device for an oil well and to the associated safety installation. The inventive device comprises a valve housing (40) which defines a fluid flow passage (52).The aforementioned housing (40) comprises a valve (48) which is used to seal the passage and which can move between an open position and a closed position and means for permanently biasing the valve towards the closed position thereof. The housing (40) also comprises releasable means (54) for connecting same to a working line with tubing that is intended to move the housing (40) in the conduit. In addition, the device comprises retractable means (42) for supporting the valve (58) in the open position and hydraulic means (44, 46) for actuating the support means (42) in order to activate same upon reception of a valve open control signal. The aforementioned support means (42) and actuation means (44, 46) are solidly connected to the housing (40) such that they can be moved simultaneously under the control of the line.
Le dispositif comprend un boîtier de vanne (40) délimitant un passage (52) de circulation du fluide. Le boîtier (40) comprend une vanne (58) d'obturation du passage, mobile entre une position d'ouverture et une position de fermeture, et des moyens de sollicitation permanente de la vanne vers sa position de fermeture. Le boîtier (40) comprend des moyens libérables (54) de liaison à une ligne de travail au câble destinée à déplacer le boîtier (40) dans le conduit. Le dispositif comprend des moyens rétractables (42) de maintien de la vanne (58) dans sa position d'ouverture et des moyens hydrauliques (44, 46) d'actionnement des moyens de maintien (42) pour activer ces moyens (42) lorsqu'un signal de commande d'ouverture de vanne est reçu. Les moyens de maintien (42) et les moyens d'actionnement (44, 46) sont solidaires du boîtier (40) pour leur déplacement simultané sous la commande de la ligne.
Girardi Joseph
Michaud Christophe
Millet Francois
Geoservices Equipements
Robic
LandOfFree
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