Tubing Head Spool
Description
The tubing head spool is the top spool on a surface wellhead assembly. It is installed after the last casing string to provide a load shoulder to support the tubing string and a seal bore for the tubing hanger or production casing/tubing annulus seal. When the well is completed, the tree is installed on top of the tubing head spool with a tubing head adapter.
A straight-bore bowl design minimizes risk of damage to sealing areas by drilling tools and prevents wedging of the tubing hangers, bowl protectors and test plugs.
Functions
- Provide a load shoulder inside the head to support tubing hangers and pack-offs.
- Provide a controlled bore against which the hanger or pack-off can
- Provide for a secondary annulus seal around the top of the previous casing
- Provide access to the annulus between the tubing string and the production
- Provide a means to support and test BOPs while completing the
Features and Benefits
- Has a straight-bore design compatible with all WETCO tubing hangers.
- Is available with studded and threaded
- Top flange is prepared for tie down locking
- Accept P-seal and FS-seal at
- Seal bore is less likely to be damaged during drilling
1400
Features and Benefits
- 1417 offers the same features as 1400 except 3rd
- Accept 41036 tubing
- Restrains the well pressure by latch mechanism instead of tie down locking
1417
Features and Benefits
- 1412 offers the same features as
- Accept the TH41-ESP-G tubing
- The guide screw fixes the tubing hanger in correct direction of penetrator exit on tubing head adapter.
- Accept the 41032 at
1412
Features and Benefits
- 1418 offers the same features as
- Accept the TH41-ESP-P tubing
- Prepared a V-notch in the tubing head spool witch sets the tubing hanger in correct direction of penetrator exit on tubing head adapter.
- Accept the 43037 at
1418
Features and Benefit
- 1406 offers the same features as
- Has one outlet elevated at 45°.
- It is used in low pressure wells to inject gas, water, …
1406
Features and Benefits
- 1402 offers the same features as
- Has two outlets elevated at 45°.
- Outlets are prepared for back pressure valves
1402
