Tubing head seal assembly

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 33/043 (2006.01) E21B 33/035 (2006.01) E21B 33/04 (2006.01) E21B 33/064 (2006.01) E21B 34/04 (2006.01) E21B 43/013 (2006.01) F16K 3/02 (2006.01) E21B 33/00 (2006.01)

Patent

CA 2403860

A flow completion system for controlling the flow of fluid from a well bore, comprising a tubing spool and a production outlet which communicates with a central bore; a tubing hanger which is supported in the central bore and which includes a production bore and a production passageway that communicates between the production bore and the production outlet ; a first closure member in the production bore above the production passageway; a first annular seal between the tubing hanger and the central bore above the production passageway; wherein the first closure member and the first seal comprise a first pressure-containing barrier between the well bore and a surrounding environment; a second closure member in the production bore above the first closure member; and a second annular seal between the tubing hanger and the central bore above the first seal; wherein the second closure member and the second seal comprise a second pressure-containing burner and wherein both the first and the second barriers are associated with the tubing hanger.

L'invention concerne un système de complétion d'écoulement servant à commander l'écoulement de fluide d'un puits de forage. Ce système comprend un raccord double-bride pour colonne de production et une évacuation de production qui communique avec le trou de forage central; une suspension de colonne de production supportée à l'intérieur du trou de forage central et comprenant un trou de forage de production et un passage de production communiquant entre le trou de forage de production et l'évacuation de production; un premier élément de fermeture placé dans le trou de forage de production au-dessus du passage de production; un premier joint d'étanchéité annulaire placé entre la suspension de colonne de production et le trou de forage central au-dessus du passage de production. Selon cette invention, le premier élément de fermeture et le premier joint d'étanchéité comprennent une première barrière pour contenir la pression entre le puits de forage et une zone entourant ce dernier; un deuxième élément de fermeture placé dans le trou de forage de production au-dessus du premier élément de fermeture; et un deuxième joint d'étanchéité annulaire placé entre la suspension de colonne de production et le trou de forage central au-dessus du premier joint d'étanchéité. Le deuxième élément de fermeture et le deuxième joint d'étanchéité comprennent une deuxième barrière pour contenir la pression. La première et la deuxième barrières sont toutes deux associées à la suspension de colonne de production.

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