Wellhead expansion assembly

Details Wellhead expansion assembly Wellhead expansion assembly

E - Fixed Constructions

21

B

166/47

E21B 33/03 (2006.01) E21B 36/00 (2006.01)

Patent

CA 1217129

ABSTRACT OF THE DISCLOSURE A wellhead expansion assembly for wells having a plurality of tubes carrying hot fluids into and out of a well. Thermal expansion of the tubing is a accommodated by provision of an expansion chamber for termination of each separate string of tubing. Expansion chambers are connected in series, female threaded end to male threaded end. A male end of a first expansion chamber is threadedly engaged with a wellhead donut while a terminal end of a last expansion chamber in the series is threadedly engaged with a cap.

463313

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