Wellhead Christmas Tree Cap
Introduction of Wellhead Tree Cap
X-Max Tree Cap is basically consisting of a Flanged body(Hub body), Blanking Plug, Hammer
Nut as principal parts and Circlip & O-ring as secondary parts. Blanking Plug has a provision to
accommodate pressure gauge to ascertain inside pressure of the well. Inside of Flanged body is
having API-UP TBG thread as lift thread.
Types of the X-mas Tree cap
We have two types of x-max tree cap, the main difference is a special passing through tools OD
required that makes the tree cap sealing ID special which allows the tools access.
The X-max tree cap can be with hammer nut and also the steel bar operated.
Specification of Wellhead Christmas Tree Cap
Nominal Size
and WP. | Lift Thread | Bore | Height |
2 1/16-2000 | 2 3/8 API UP TBG | 2 21/64 | 7 1/8 |
2 9/16-2000 | 2 7/8 API UP TBG | 2 53/64 | 7 1/16 |
3 1/8-2000 | 3 1/2 API UP TBG | 3 1/8 | 9 9/16 |
3 1/8-3000 | 3 1/2 API UP TBG | 3 1/8 | 9 13/16 |
2 1/16-5000 | 2 3/8 API UP TBG | 2 21/64 | 7 3/4 |
2 9/16-5000 | 2 7/8 API UP TBG | 2 53/64 | 8 1/16 |
3 1/8-5000 | 3 1/2 API UP TBG | 3 1/8 | 10 1/16 |
4 1/16-5000 | 4 1/2 API UP TBG | 4 13/64 | 12 1/8 |
2 1/16-10000 | 2 3/8 API UP TBG | 2 1/16 | 8 |
2 9/16-10000 | 2 7/8 API UP TBG | 2 9/16 | 7 9/16 |
3 1/16-10000 | 3 1/2 API UP TBG | 3 1/16 | 10 5/16 |
4 1/16-10000 | 4 1/2 API UP TBG | 4 1/16 | 13 1/8 |
The x-mas tree is normally made by forged AISI4130 and fully heat treated as per API 6A spec.
