Tubing Head Spool

Tubing head configuration

Tubing head is usually pwh flanged ends. Between top and bottom It is installed on the top flange of casing head to hang tubing hanger and seal the annular space between the tubing string and oil string, consisting of tubing head spool and tubing hanger.

Functions:

Hang the tubing string inside well

Seal the annular space between tubing and casing

Give a crossover to connect casing head downwards and x’mas tree upwards

The tubing head spool provide both side outlets for injection and well clean-up operations

Tubing hanger

Tubing hanger is an assembly to support tubing string and seal the annular space between tubing and casing, which is connected with tubing and seated into tubing hanger spool by tubing gravity. It is convenient to operate and replace wellhead so that it is widely used for intermediate depth well and common well.