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Home >> equipment >> casing head casing hanger tubing head tubing hanger christmas tree

Casing Head and Casing Hanger Tubing Head and Tubing hanger, Christmas tree (X-Mas tree), Tees and Crosses, Chokes

Casing Head


The casing head is a kind of part connecting casings and wellheads. It is used as supporting the weight oftechnical casing and production casing, sealing theannular space between the casings, and installing BOPstacks, It provides a transition joint for the tubing head,Christmas tree and other wellheads, It can also supplycement, monitor & control well’s sinking, and injectbalance liquids etc by the two side outlets on the casinghead housing.

The casing head manufactured by our company is a standard structure, the casing hanger produced fits well with the casing housing, and the casing hanger of different sizes are available according to the casing procedure and the change of well head conditions. The standard casing head’s top connection is API 6B or API 6BX flange.


Casing Hanger

Casing hanger produced fits well with the casing housing, and the casing hanger of different sizes are available according to the casing procedure and the change of well head conditions.

The standard casing heads top connection is API 6B or API 6BX flange.


Tubing Head and Tubing hanger

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

Functions: Hang the tubing string inside well;
- Seal the annular space between tubing and casing;
- Give a crossover to connect casing head downwards and to connect xmas tree upwards;
- Provide both side outlets in tubing head spool body through which to execute injection and well wash operation.

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.

We manufacture tubing head spool in full accordance with API 6A, the body is made of forged or special smelt steel, providing high bearing strength, safety and reliability. Side outlets could be line pipe thread or studded, studded side outlet is machined with 1.1/2 female thread.


Christmas tree

The Christmas tree is an assembly of valves, spools and fittings for an oil well, and to design to direct and control formation fluids from the well. It can provide inlet for production tubing strings, including all components above the tubing head adapter. Christmas tree assemblies can constitute many different kinds of combinations in order to meet any special requirement. Based on their different functions, Christmas trees can be classified into such special Christmas trees as oil production (flowing and artificial lift) Christmas trees, gas (natural gas and various sour gas) production Christmas trees, water injection Christmas trees, thermal recovery Christmas trees, fracturing Christmas trees and acidizing Christmas trees. Different pressure ratings serialize Christmas trees.

The gas production Christmas tree and tubing head are mainly used to produce gas and inject gas. The relative density of natural gas is low and gas column pressure is low, while well head pressure is high and liable to leakage regardless of gas production and gas injection. Sometimes natural gas contains corrosive media such as H2S and CO2. Therefore, the gas production Christmas tree calls for rigid requirements on both its materials and its sealing characteristics. For the sake of safety, two gate valves are used on the tubing and casing respectively. Some gate valves to be used on high pressure and ultra-high pressure gas wells are integrated valves manufactured from high quality forged steel.

The pressurization parts of the Christmas trees and tubing spools manufactured by Kingrig are made of forged or special smelted forging, so it is high-pressurization safety and so on.

Scope of supply:
- Working pressure: from 2,000psi to 20,0000psi
- Nominal diameter: from 2.1/16 to 5.1/8
- Working medium: crude oil, gas, drilling fluid, gas contained H2S, CO2
- Working temperature: -46? to 121? (L U)
- Material class: AA, BB, CC, DD, EE, FF
- Specification level: 1-4
- Performance requirement: 1-2
- To complete with air or hydraulic safety valve at option


Tees and Crosses

- API 6A tees and crosses, in- clude tees, 4-way, 5-way, 6- way crosses.
- Pressure rating, 2000PSI to 15000PSI
- Material classes. AA to FF
- PSL 1 to 4 and PR 1 & 2



- Pressure rating, 3000PSI to 15000PSI Size Range: 1-13/16 to 4-1/16
- Type: TLH (equivalent to H2) Operations: Manual / Hydraulic
- Material classes. AA to HH
- Temperature, PU, LU PSL 1 to 3 and PR 1 & 2
- Available for Oil, Gas, H2S, CO2


For detailed info on the product or service, including its price and delivery terms, drop us a line in English or Russian at or call at 007-495-542-0468 (English, Russian).

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