Patent ID: 7913754

Claim:
A wellhead assembly for an injection tubing string, the wellhead assembly comprising: a wellhead apparatus having a longitudinal bore therethrough and an injection port, the injection port extending through the wellhead apparatus and communicating with the longitudinal bore of the wellhead apparatus; a mandrel adapted to be inserted into the longitudinal bore of the wellhead apparatus, the mandrel comprising a longitudinal bore therethrough and a port, the port extending through the mandrel for communicating between the injection port of the wellhead apparatus and the longitudinal bore through the mandrel; and a hanger connected to the injection tubing string, the hanger being adapted to land in the longitudinal bore of the mandrel, the hanger comprising a communication passageway which facilitates fluid communication of an injected fluid between the port of the mandrel and the injection tubing string, the hanger further comprising a longitudinal flow area therethrough for the production of fluids from a wellbore and up past the hanger.