Oil well blow-out preventer

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 33/06 (2006.01)

Patent

CA 2218202

An oil well blow-out preventer for use on an oil well equipped with a well casing, a wellhead, a production tubing string, and a pump rod receivable within the production tubing string. The blow-out preventer comprises a central housing member that includes a flow passageway and a pump rod passageway and a blow-out preventer contained within the central housing member. The flow passageway is in communication with the production tubing string and provides a mechanism for fluid to be removed from the well while the pump rod passageway provides an opening for entry of the pump rod into the well. The blow-out preventer includes a pair of rams that are adjustable to seal around the pump rod to prevent the accidental loss or spillage of oil or fluid from the well. The device may also include an integrated pump rod passageway sealing device, to prevent the spillage of fluids from the oil well upon the breakage or removal of the pump rod, and an integrated production tubing string rotator.

Bloc d'obturation de puits devant être utilisé dans un puits équipé d'un cuvelage, d'une tête de puits, d'un train de tubes de production et d'une tige de pompage qui se loge dans le train de tubes de production. Le bloc obturateur de puits se retrouve dans un boîtier central qui comporte un passage pour l'écoulement du fluide et un passage pour la tige de pompage. Le passage pour l'écoulement du fluide communique avec le train de tubes de production et offre un moyen d'enlever le fluide du puits, alors que le passage pour la tige de pompage offre une ouverture pour l'entrée de la tige de pompage dans le puits. Le bloc obturateur de puits comprend deux mâchoires réglables de manière à former un joint étanche autour de la tige de pompage afin d'éviter la perte ou le déversement de pétrole ou de fluide provenant du puits. Le dispositif peut également comprendre un dispositif intégré d'étanchéité du passage de la tige de pompage afin d'empêcher le déversement de fluides provenant du puits en cas de bris ou d'enlèvement de la tige de pompage, et un dispositif intégré de rotation du train de tubes de production.

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