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10 components of wellhead​

Aug. 28, 2020
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10 components of wellhead

casing spools

casing hangers

choke manifold

packoffs (isolation) seals

test plugs

mudline suspension systems

tubing heads

tubing hangers

tubing head adapter

oilfield christmas tree and wellhead components    

The oilfield christmas tree is an assembly of valves and accessories, used for fluid control of oil and gas wells, and provides access to the production tubing string. It includes all the equipment on the upper flange of the tubing head. The oilfield christmas tree assembly can be used in many different combinations to meet the needs of any special purpose. According to different functions, the oilfield christmas tree is divided into special wellhead devices for oil production (self-injection, artificial lift), gas production (natural gas and various acid gases), water injection, thermal production, fracturing, acidification, etc. And form series according to different pressure levels.    oilfield christmas tree and wellhead components are mainly used for gas production and gas injection. Because the relative density of natural gas is low, the pressure of gas injection is low, regardless of whether the gas production or gas injection wellhead pressure is high, the flow rate is high, and it is easy to leak. Sometimes there are corrosive media such as H2S and CO2 in the natural gas, which is harmful to the tree. Tightness and its material must have stricter requirements. Sometimes for safety, double valves are used for oil and casing. For some high-pressure and ultra-high-pressure gas wells, the valves are integrally forged with high-quality steel.     The main pressure-bearing parts of the company’s Christmas tree and tubing head cross are made of forgings or specially smelted castings, so they have the characteristics of high pressure bearing, safety and reliability. 

Function

1. It is the base of the oilfield christmas tree. ⒉Hanging and fixing the oil pipe hanger. 3. Pack the casing annular space. 4. It is the casing operation window. 5. Provide a control channel for the downhole safety valve and a penetration channel for the electric pump cable.

10 wellhead components

casing head

The casing head is a kind of part connecting casings and wellheads. It provides a transition joint for the tubing head.Christmas tree and other wellheads.Both top and bottom connections are API 6A flanged, and the flanges are provided with locking bolts.  Casing Heads have a straight bore bowl with 45 C landing shoulder design which avoids damage to sealing areas by drilling tools and prevents test plug and bowl protector wedging problems when pressure is applied.  Casing Heads are normally furnished with threaded outlets and studded outlets are available upon request. Bottom connections can be furnished threaded or slip-on for welding.

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casing spools

casing spools feature a versatile straight bore design that can accept a wide variety of slip and mandrel type casing hangers, minimizes risk of damage to sealing areas by drilling tools, and prevents test-plug and bow-protector wedging problems when pressure is applied.

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casing hangers

Casing hanger is used for supporting the casing loads, and sealing the annular space between casing and tubing

choke manifold

Throttle and killing manifold is indispensable well control equipment for implementing the new process of
balanced drilling.

packoffs (isolation) seals

test plugs

Choose from our selection of expansion plugs, inflatable plugs, expansion plugs for tubing, and more. In stock and ready to ship.

tubing heads

Tubing head is an equipment attached to the casing spool used to hang the tubing and seal the annulus between the tubing and casing, consisting of tubing head spool and tubing hanger.

tubing hangers

Casing hanger is used for supporting the casing loads, and sealing the annular space between casing and tubing

tubing head adapter

Drilling spool and adapter flange can be designed with different combination and dimensions according to the
different users' needs, meeting the scene operation to a great extent.


Buy low price, high quality wellhead components. You can choose our products. Our company is the leading factory. Warmly welcome new and old customers to visit and patronize!


Contact Us
  • Tel.: +86 158 0080 9423
  • E-mail: info@aqemachinery.com
  • Add.: Chuangshanghui Building, Yanan East Road No.1882, Changning District, Shanghai, China
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