Tubing Head Spool

 The tubing head spool typically includes a series of hangers, which are mechanical devices that support the production tubing and provide a seal between the tubing and the spool. The hangers are designed to accommodate different sizes and types of tubing and may be adjusted to control the position of the tubing within the wellbore.

1.  Structure of Tubing Head

Tubing head is a spool with both flanged ends, which is set on the top flange of casing head to hang tubing and seal the annular space between the tubing string and oil-layer casing and which consists of tubing head spool and tubing hanger.

2.  Functions

1)Hang the tubing string inside well;

2)Seal the annular space between tubing and casing;

3)Make crossover to connect casing head downwards and Christmas tree upwards;

4)Provide both side outlets in tubing head spool body through which to execute injection and well-wash operation.

3.  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.

Design features

Fabricated with BT secondary seal, and could be field mounted by cutting casing pipe to accommodate the seal height.

Tubing hanger and top flange are designed to run cable.

Several control ports are available for connecting pipeline.