The tubing head is usually a spool with both 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.

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 by tubing gravity. It is convenient to operate and replace wellhead so that it is widely used for intermediate depth well and common well.