E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 33/035 (2006.01) E21B 7/128 (2006.01)
Patent
CA 2614809
A system and a method are described for a dynamic seal around a drill stem that moves into or out of water carrying, drilling fluid carrying or hydrocarbon carrying wells. The sealing arrangement (10) comprises an elongated sealing unit (30) that is arranged to envelop the drill stem (16), and a receiver unit (40) that is mounted to said existing equipment on the well and which is arranged to receive the elongated sealing unit (30), and that internal pressure support is provided in the sealing arrangement, at least corresponding to the surrounding pressure, to provide a dynamic seal around the drill stem (16).
La présente invention concerne un système et un procédé de joint dynamique autour d~une tige de forage qui se déplace dans et hors des puits de nappe aquifère, de liquides de forage ou d~hydrocarbures. L~agencement d~étanchéité (10) comprend une unité d~étanchéité allongée (30) qui est agencée pour envelopper la tige de forage (16), et une unité de réception (40) installée sur ledit équipement existant sur le puits et agencée pour recevoir l~unité d~étanchéité allongée (30), et le support de pression interne est prévu dans l~agencement d~étanchéité, correspondant au moins à la pression ambiante, pour fournir une étanchéité dynamique autour de la tige de forage (16).
Askeland Tom Kjetil
Edvardsen Per Espen
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Siem Wis As
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