WELLHEAD EXPANSION ASSEMBLY

摘要

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.