Well tubing hanger sealing assembly

Details Well tubing hanger sealing assembly Well tubing hanger sealing assembly

1990-09-05

1991-12-10

Dang, Hoang C.

Wells

Central chamber sealed with respect to prepositioned...

166182, 166208, 285139, 285142, E21B 3304

Patent

active

050709429

ABSTRACT:
The tubing hanger seal assembly of the present invention includes a metal to metal seal that is energized from above by a drive sleeve. The drive sleeve is threaded to the outside of the tubing hanger and as it is rotated downward, engages a load ring which in turn energizes the metal to metal seal by compressing it between the tubing hanger and tubing head. In addition, the invention includes a split ring which is forced into a notch by the drive sleeve in the inside of the tubing head to prevent the seal from being blown-out by upward pressure.

REFERENCES:
patent: 4548273 (1985-10-01), Leicht et al.
patent: 4674576 (1987-06-01), Goris et al.
patent: 4691780 (1987-09-01), Galle, Jr. et al.
patent: 4757860 (1988-07-01), Reimert
patent: 4949786 (1990-08-01), Eckert et al.

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