Wellhead equipment

Specifications

API  6A Wellhead Equipment Christmas Tree

Wellhead equipment consists of casing head, tubing head and Xmas tree, which are applicable for connection of casing string and tubing string, sealing the annular space between casing and tubing and controlling the pressure of the production wellhead and adjusting the flow rate of oil/gas wellhead as well as some special operations such as fracturing, injection and test etc. 

Technology specifications

• The design meets the requirement of API SPEC 6A.

• Rated working pressure2000~20000PSI

• Rated working temp: K, L,  P, R, S, T, U, V

• Material class: AA, BB, CC, DD, EE, FF

• Product specification levelPSL1~PSL4

• Performance requirement levelPR1-PR2

• Suitable medium: Petroleum, natural gas, mud etc

• All popular bore size is available

Casing Head

 Casing hanger for casing head and casing spool has straight type seat bore and 45°cone of hanging shoulder, with fine loading ability.

• if required, it can be designed in integral or split structure.

• The connecting type of casing head and surface casing is weld, thread or slip

• The connecting type of side outlet includes thread, bolted flange or flange

• Matched casing hanger structural type: slip, thread (mandrel)

• In the bottom of casing head and casing spool sets casing secondary seal mechanism and sealing test port

Tubing Head

    Tubing hanger for tubing head has straight type seat bore and 45°core of hanging shoulder, with strong loading ability.

• The connecting type of side outlet is bolted flange with VR thread for valve-replacement operation.

• In the bottom flange sets secondary seal mechanism and sealing test port.

• Tubing hanger and tubing head adaptor can be penetrated through by cable or cable penetrator and set with control pipeline interface.

• Tubing hanger can be set with BPV thread as required.

Xmas Tree

   Xmas tree is a key equipment to control the pressure in wellhead and adjust the flow rate of oil/gas well in oil/gas production operation.

• It can be designed into general or integral structure as required

• It can be completed with pneumatic/hydraulic safety valve

• It can be classified into two kinds of single-wing and dual-wing

• As required, matched choke may be positive choke or adjustable choke alternatively

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