A tubing hanger is a component used in the completion of oil and gas production
wells. It is set in the tree or the wellhead and suspends the production tubing
and/or casing. Sometimes it provides porting to allow the communication of
hydraulic, electric and other downhole functions, as well as chemical injection. It
also serves to seal-in the annulus and production areas.
Tubing hanger is attached to the topmost tubing joint in the wellhead to support
the tubing string. Typically, the tubing hanger is located in the tubing head, with
both components incorporating a sealing system to ensure that the tubing
conduit and annulus are hydraulically isolated.