Dome-type packoff wellhead

Details Dome-type packoff wellhead Dome-type packoff wellhead

E - Fixed Constructions

21

B

166/47

E21B 43/12 (2006.01) E21B 33/03 (2006.01) E21B 33/04 (2006.01) E21B 36/00 (2006.01)

Patent

CA 1179938

ABSTRACT OF THE DISCLOSURE "DOME-TYPE PACKOFF WELLHEAD" A wellhead assembly for wells having tubing carrying hot fluids into or out of the well. The tubing is subject to elongation due to thermal expansion from a fixed portion within the well. The present wellhead accommodates the thermal elongation and provides a noncontacting connection of the tubing from outside the wellhead. The wellhead may also be constructed to accommodate concentric tubing for hot fluids to or from separate portions of the well.

407536

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