Wellhead Equipment API 6A Casing Head & Tubing Head
Specifications
API 6A Casing head for Christmas tree:
1)Work pressure:2000-20000psi
2)work temp:-46-121
3)material class:AA-HH
Casing head
Casing head and casing spool use standard design, and can apply to all kinds of JMP slip and mandrel type casing hanger.
Straight-bore Design
45°shoulder design with high load capacity.
Side Outlet Connection Form
Pipeline thread side outlet
Threaded flange side outlet, design with VR plug.
Secondary Seal
Design with multi-structure secondary seals at bottom.
Installation can be performed on spot per different structure types, injection or non-injection can achieve seal.
Interchangeability of Casing Hanger
Casing hanger design with standard profile
Interchangeability between slip casing hanger and mandrel type casing hanger
Connection Forms between Casing Head and Surface Casing
Threaded bottom type
Welded bottom type
Slip bottom type
The casing head is a kind of part of connecting casings and wellheads. It is used as supporting the weight of technical casing and oil string casing, sealing the annular space between the casings. It provides a transition joint for the tubing head, Christmas tree and other wellheads. It can also supply cement, monitor and control well's sinking, inject balance liquids etc through the two side outlet on the casing head housing.The casing head produced by our company is a standard structure, in which the casing hanger produced by our company is fitted. The casing hanger can be elected on size according to the casing procedure and the change of well head condition. On the upper of the casing heads sets all API 6B or API 6BX flange. The options of the casing head as follows: The bottom connection of the casing head shall be either API perfect circle thread casing box or API standard trapezeform casing threaded box, socket welded connection and slip type connection as well. It can be provided with weld-group supporting base plate. Side outlets are provided with pipeline threaded connection and bolted connection, bolted side outlet is machined with female thread of R1/2 valve-changer.
