JT-Petro can provide API 6A casing heads, tubing heads and Christmas trees which can meet the requirements of customers for different casing and tubing programs and pressure grades.
Wellhead Features:
- Fix the drilled wellhead, connect wellhead casing string, seal and control the annular of casing, suspend tubing, control wellhead pressure, adjust flow rate, induce oil into outlet pipeline, shut off oil well when necessary, and applicable to acid fracturing, water injection and test services
- Meet the requirements of API 6A
- Consist of casing head, tubing head and Christmas tree
- Applicable to all the casing and tubing programs and connection types
- Safe, reliable and easy to operate and maintain
- Can be equipped with pneumatic (hydraulic) safety valve
- Working pressure: 2, 000 psi¨C20, 000 psi
- Working medium: petroleum, natural gas, mud and gas containing H2S, CO2
- Material class: AA, BB, CC, DD, EE, FF
- Specification level: PSL 1¨C4
- Performance level: PRI¨C2
- Block Christmas Tree Wellhead Assembly
Casing Head
With the design of versatile straight-bore, the casing head and casing spool can be equipped with all kinds of slip and mandrel type casing hangers, which have symmetrical lock screws and fixed wear bushing
- Straight-bore design; 45˚shoulder with large load capacity
- Side outlet connection; Pipeline thread side outlet; Threaded flange side outlet; VR thread
- Typical Wellhead and Christmas Tree
- Typical Multi-mounted Casing Head
- Secondary seal; BT type secondary seal mechanism is designed on the bottom. The casing can be cut on site during tubing installation so as to accommodate the seal height.
- Interchangeable casing hanger
- Standard dimensions; Slip casing hanger and mandrel type casing hanger are interchangeable.
- Connection types between casing head and surface casing including :welded bottom connection,threaded bottom connection and slip bottom connection
Casing Head Body
Casing Spool Body
Casing Hanger
- W Type Hanger
The seal part is HSN. The slip bowl, slip and support base are made of API 6A low alloy steel.
Packing off is automatically energized by the casing weight.
With reasonable design of slip, the casing hanger has large load capacity.
It is applicable to all casing heads and spools.
- WD Type Casing Hanger
WD type casing hanger is applied to connect casing head and surface casing and make the slip hold casing tightly with the help of external force. It is easy to install and operate.
It can connect with 20˝ , 13-3/8˝ and 9-5/8˝ surface casings.
- Mandrel Type Casing Hanger
Mandrel type casing hanger is designed to meet different requirements of customers, which is mainly consisted of hanger body, rubber seal ring and retainer.
It is applied with in the casing head and spool. With reliable seal performance, it is easy to install and operate.
Casing Head Tools
- Wear bushing
Wear bushing is mainly used to prevent the damage of casing head and the seal surface of the cavity of casing spool during drilling.
It is installed and recovered by the sending-retrieving tool.
- Sending-retrieving tool for wear bushing
The tool is used to send and retrieve wear bushing, with excellent reliability and safety.
- Test plug
Test plug is placed on the shoulder of casing head and casing spool. The test plug is an important accessory to test the seal performance of casing head,
casing spool and BOP.
We can provide different test plug with different specifications by changing external test plug sleeves.
- Multi-functional Test Plug
The multi-functional test plug can be used as the tool for sending and retrieving wear busing and also as test plug.
Tubing Head and Christmas Tree
Tubing Head
Tubing head has the design of universal straight hold, which can be fitted with all types of single or double-string completion tubing hanger.
- Straight hole design
With the design of 45° shoulder and large load capability
- Side outlet connection
Thread cutting Flange side outlet
With VR block thread
- Top wire assembly
Designed with complete top wire assembly
Locked anti-wear sleeve
- Secondary seal
BT type secondary seal mechanism is designed at the bottom, which can be adjusted to meet different requirements of height by cutting casing.
- Tubing head, upper flange and tubing hanger
Rubber or metal seal
Tubing hanger and upper flange can be penetrated directly by cable or penetrated by cable penetrating rod
Tubing head and upper flange can be connected with several control pipeline connections at the same time.
Tubing Head and Split-body Christmas Tree
Tubing Head and Integral Christmas Tree
Tubing Hanger
Tubing hanger has various structures including taper type and straight seat type. It can be either of metal-to-metal seal or non-metal seal. The product has back pressure valve thread and locating mechanism. It is designed with various cable penetrating channels including pipeline channel for downhole safety valve control, chemical injection channel and capillary channel
The upper and lower threads can be API tubing threads, FOX, TM or VAM threads.
Tools
Back pressure valve is applied to block the pressure in well to provide convenience for the maintenance and replacement of main valve of Christmas tree.
Sending and withdrawal tool for back pressure valve is applied to install and recover back pressure valve under the mechanic and well pressure.
Cable Seal Tubing Hanger
Back Pressure Valve
VR Plug
Sending and Withdrawal Tool for Back Pressure Valve
Sending and Withdrawal Tool for Vr Plug
Special Wellhead
Special wellheads include multi-seat wellhead, compound wellhead, double-pipe wellhead, PC pump wellhead and auto safety control wellhead system.
Auto Safety Control Wellhead System
Metal seal is adopted. The metal sealed parts can work for a long time with stable and reliable performance in high pressure, corrosion and harsh conditions. The service life of the metal sealed parts is much longer than those without metal seal.
Multi-functional tubing hanger has the functions of hanging and seal tubing and has interfaces for ESP cable penetration, data cable penetration, chemical agent injection and downhole safety valve control pipeline. It can meet the requirements for various conditions of oil/gas production.
The equipment has the function of auto monitoring to realize automatic wellhead shutdown and remote control.
The equipment has the function of fire prevention and control to shutdown well in case of fire and ensure the safety of equipment and personnel.
Working pressure: 2, 000¨C20, 000 psi
Working media: petroleum, natural gas, mud and gas containing H2S and CO2
Working temperature: from -46 ℃to 120 ℃
Material level: AA, BB, CC, DD, EE, FF
Specification level: PSL 1¨C4
Performance level: PR 1¨C2
