Wellhead And Christmas Tree

Conventional Wellhead and X-mas Tree

●  Designed and manufactured strictly in accordance with API Spec 6A and NACE MR-0175 specifications.
●  Compact design, reliable operation
●  Rated working pressure 5000psi, 10000psi and 15000psi series available.
●  Metal seal available from tubing hanger to the whole X-mas tree.
●  Flanged connection.
●  “VR” thread available for gate valve removal/installation，bypass valve can be replaced under pressure.
●  Series tubing hangers available for various well completion needs.
●  BPV and tools available.

HH Class Oil  Gas X-mas Tree

●  Designed and manufactured strictly in accordance with API Spec 6A and NACE MR-0175 specifications
●  Split structure applied for the whole gas X-mas tree
●  Nickle alloy welded for the whole wellbore
●  Tubing hanger designed with metal sealing
●  Secondary seal designed with metal sealing

Two-in-one Wellhead System

Two-in-one wellhead system adapts compact wellhead technology and produces oil from different layers seperately in the same well under dual-casing & tubing system.The main structure is to place two comparallel casing strings and tubing strings inside the same surface casing, both tubing strings are separated by dual-tubing hanger. Integrated X-mas tree seated above with compact design & good sealing performance.

High Pressure Large Wellbore Fracturing X-mas Tree

Fracturing X-mas tree is one of the most important components fracturing equipments, it is consisted with several fracturing gate valves and fracturing goat head.The fracturing liquid is pumped into the fracturing goat head through several fracturing manifold, then pumped to the bottom of well to perform the fracturing service on designated formations through fracturing gate valves. The open and close of fracturing gate valves is used to control the fracturing liquid.Main bore size: 7-1/16”, max working pressure: 15000psi.

Subsea X-mas Tree

Subsea Christmas Tree has an extensive adaptability, it could meet the requirement of Blow well, Gas-lift well, Dual tubing, Chemical injection, Water injection, Annulus briging,etc.

Dual Tubing X-mas Tree

The dual tubing wellhead system adapts compact wellhead technology and produces oil from different layers seperately of the same well.The main structure is to place two comparallel tubing strings inside the same production casing, both tubing strings are separated by dual-tubing hanger. Dual tubing X-mas tree seated above with compact design & good sealing performance.

Typical Wellhead Equipment

Fix drilled wellhead, connect wellhead casing string,  seal and control the annular of casing, suspend tubing,  control wellhead pressure and adjust flow rate, also induce  oil into outlet pipeline, shut off oil well when necessary,  and apply to acid fracturing, water injection and test  service.

Consist of casing head, tubing head and Christmas tree

Apply to all kinds of casing, tubing programs and

connection forms

Feature reliable running, simple and convenient

operating and repairing

Can be equipped with (pneumatic) hydraulic safety

valve

Working pressure：2000PSI～20000PSI

Working medium：oil, natural gas, mud, including  H2S, CO2

Working temperature：-46°C～121°C（Class LU）

Material class： AA、BB、CC、DD、EE、FF、HH

Specification level： PSL1~4

Performance level： PR1~2

Casing head Assembly

Straight-bore Design ：  45°shoulder design with  high load capacity

Side Outlet Connection Form ：

Pipeline thread side outlet  Threaded flange side outlet

Interchangeability of Casing Hanger：  Casing hanger can interchange  Interchangeability between slip

casing hanger and mandrel type hanger

Lockdown screw assembly：

Design complete set lockdown screw assembly  Lock wear bushing

Protect the rise of casing hanger

Bottom connection form：

Weld type bottom connection

Threaded type bottom connection  Slip type bottom connection

Connection Type of Casing Head & Surface Casing

Manufacture all kinds  of casing thread,  connect surface casing  through pup joint

Weld casing head and  surface casing on spot,  apply to all specifications  of casing.

Tighten locking bolt to slip  clamp surface casing,

design with various type casing  seal ring. The connection is firm and the seal is reliable

Casing hanger & secondary pack-off for casing head

Slip type Casing Hanger

Type Hanger for surface casing

Consist of slip, slip bowl, etc.

Used for connecting casing head and surface casing through slip tighten  casing with help of external force.

Applicable to XLBF casing heads of  bottom connection.

Type Hanger (automatically energized )  Consist of slip, slip bowl and support base, etc.

Pack-off is automatically energized with casing weight.

Mating surface of slip and slip body design with

double limited position and one taper, this can  lock casing easily and avoid destroying casing.

Applicable to XLBF casing heads and casing spools.

Type Hanger(manually energized )

Consist of slip, slip bow and hold down plate, etc.

Pack-off is manually energized.

Mating surface of slip and slip body design with  double limited position and one taper, this can

lock casing easily and avoid destroying casing.

Applicable to XLBF casing heads and casing spools.

Mandrel type Casing Hanger

General mandrel casing hanger

Consists of hanger body, seal ring  and retainer ring, etc.

Applicable to XLBF casing heads  and casing spool, this is easy

operation and reliable seal.

Fluted mandrel casing hanger

Consists of hanger body and pack-off, etc.

Mandrel casing hanger use separate structure of hanging and seal.

Hang casing and cement before install seal assy.

Avoid damage seal assembly during hanging casing and cement.

convenient to replace seal assy.

Casing head Tools

Wear bushing is used 

for preventing cavity  sealing surface of casing  head and casing spool  from damaging during  drilling, and it is installed  and removed by running  & retrieving tool.

As running/retrieving  tool of wear bushing,  as well as test plug

Used for running/retrieving  wear bushing.

The test plug is set on the  shoulder of casing head, test  seal performance of BOP,  drilling spool and casing head  through drilling pipe.

Meet the requirements of  casing head of different  specification through replacing  the external test plug.

Standard Structure of Tubing Head & Christmas Tree

Tubing Head

Tubing head with design of versatile straight-bore, can be  installed tubing hanger with different specification.

Straight-bore Design

45°shoulder design with high load capacity

Side Outlet Connection Form

Threaded flange side outlet & Design with VR plug  Lock Down Screw Assembly

Standardized design lock down screw assembly

Lock wear bushing  Secondary Seal

·Design with secondary seal mechanism at bottom, ·

Rubber seal or metal-to-metal seal

Tubing Hanger and top flange can be fed through with

cable, or penetrated with power mandrel penetrator. or  connect multiple joints for control pipeline.

Christmas tree

Special Wellhead—Multibowl Wellhead

Integral installed to save the installation time

No need to replace BOP during drilling.

Mandrel type casing hanger designed with mud  circle groove.

Equipped with emergency slip to avoid casing being  locked during lowering casing and mandrel casing  hanger not at right position.

Apply to all kinds of casing and tubing program.

Can use different seal type.

Working Pressure ：2000PSI~20000PSI

Working Medium: oil, natural gas, mud and gas

containing H2S, CO2

Working Temperature ：-46℃~121℃(Class LU)

Material Class ：AA、BB、CC、DD、EE、FF、HH

Specification level ：PSL1~4

Performance Requirement ：PR1~2

Special Wellhead—Dual Completion Wellhead

Can complete with different (pneumatic) hydraulic  safety valve.

Designwithassemblinganddisassemblingdual  tubing hanger quickly.

One well bore can exploit two different strata at the  same time, and can control and operate separately.

Compactconstruction,convenientoperation,

reliable seal.

Apply to all kinds of casing and tubing program.

Working Pressure: 2000PSI~20000PSI

Working Medium: oil, natural gas, mud and gas

containing H2S, CO2

Working Temperature: -46℃~121℃(Class LU)

Material Class: AA、BB、CC、DD、EE、FF

Specification level: PSL1~4

Performance Requirement: PR1~2

Wellhead & Christmas tree Maintenance tools

FC-type & FLS-type Manual Gate Valve

The stem packing uses teflon assy.

Metal-to-metal seal is used between bonnet body, and seat body.

The gate and seat ring is weld overlay with hard alloy.

The stem designed with back seal, can replace stem seal ring under pressure.

The bearing seat designed with special bean in order to supply sealant on  spot.

One side of bonnet is designed with sealant injection valve in order to

supply sealant on spot.

Can complete with different pneumatic (hydraulic) actuator upon user’s

requirements.

Working Pressure: 2000PSI~20000PSI

Nominal Bore: 1.13/16”~9”(46mm~230mm)

Working Medium: oil、natural gas、mud and gas containing H2S、CO2

Working Temperature: －46℃~121℃（Class LU）

Material Class: AA、BB、CC、DD、 EE、FF、HH

Specification level: PSL1~4

Performance Requirement: PR1~2

Expanding Gate Valve

Full bore design eliminates efficiently pressure drop and vortex,  and eliminates washing by solids in fluid.

Gate use expanding type structure.

Achieve low torque operation and low wastage during open and  close.

Metal seal is used between bonnet and body.

Soft seal or metal seal is used between gate and seat.

Inject sealant through injection valve to improve seal performance.

Working Pressure: 2000PSI~10000PSI

Nominal Bore: 1.13/16”~7.1/16”(46mm~180mm)

Working Medium: oil、natural gas、mud and gas containing H2S、 CO2

Working Temperature: －46℃~121℃（Class LU）

Material Class: AA、BB、CC、DD、 EE、FF、HH

Specification level: PSL1~4

Performance Requirement: PR1~2

Ball screw operator Gate Valve

Ballscrewstructure

moment

Gate valve structure

Stem structure has the function of pressure balance and switch indication.

Apply to the structure of big bore high pressure valve.

Working Pressure: 10000PSI~20000PSI

Nominal Bore: 1.13/16”~9”(46mm~230mm)

Working Medium: oil, natural gas, mud and gas containing H2S, CO2

Working Temperature: -46°C～121°C（Class LU）

Material Class: AA、BB、CC、DD、 EE、FF、HH

Specification level: PSL1~4

Performance Requirement: PR1~2

Surface Safety Gate Valve

·When oil & gas is leaking or firing, used for security  protect on well site.

·Have hydraulic safety valve and pneumatic safety valve  per different driving source.

·With heat sensitive and high pressure explosion-proof

equipment.

·Have two parts of actuator and preparation valve, can  replace and repair standard interface.

Working Pressure: 2000PSI~20000PSI

Nominal Bore: 1.13/16”~7.1/16”(46mm~180mm)  Working Medium: oil, natural gas, mud and gas containing  H2S, CO2

Working Temperature: 46℃~121℃ (Class LU)

Material Class: AA, BB, CC, DD, EE, FF, HH  Specification Level: PSL1~4

Performance Requirement: PR1~2

Adjustable Choke Valve

·Choke valves for needle type and external sleeve type  are available for Christmas tree.

·The needle and core are made of hard alloy, with

performances of wearing resistance and washing resistance.  The external sleeve choke valve has advantages of low  switch torque, throttling and shutting fluid.

Working Pressure: 2000PSI~20000PSI

Nominal Bore: 1.13/16”~7.1/16” (46mm~180mm)  Working Medium: oil, natural gas, mud and gas containing  H2S, CO2

Working Temperature: 46℃~121℃ (Class LU)

Material Class: AA, BB, CC, DD, EE, FF, HH  Specification level: PSL1~4

Performance Requirement: PR1~2

Postive Choke Valve

The bean orifice is made of ceramics or hard alloy, with  performance of wearing resistance and washing resistance.

The bonnet connection form is union, which is more  convenient to replace bean.

Working Pressure: 2000PSI~20000PSI

Nominal Bore: 1.13/16”~7.1/16” (46mm~180mm)  Working Medium: oil, natural gas, mud and gas containing  H2S, CO2

Working Temperature: －46℃~121℃（Class LU）  Material Class: AA、BB、CC、DD、 EE、FF、HH  Specification level: PSL1~4

Performance Requirement: PR1~2

Check Valve

.The working medium flows in single direction.

.Working Pressure: 2000PSI~20000PSI

.Nominal Bore: 2.1/16”~7.1/16”(52mm~180mm)

.Working Medium: oil, natural gas, mud and gas containing H2S, CO

.Working Temperature: －46℃~121℃（Class LU）

.Material Class: AA、BB、CC、DD、 EE、FF、HH

.Specification level: PSL1~4

.Performance Requirement: PR1~2

Plug Valve

.Closed or plunger-shaped rotary valve to close or open by turning 90 degrees so  that the port on the valve plug can be same or separate direction from the port on  the valve body.

.The shape of the plug can be cylindrical or conical. In cylindrical plugs, the  channels are generally rectangular; for Conical valve plug, the channel into the  trapezoidal. These shapes make the plug valve structure lightweight.

. Best suited for shutting off and connecting the medium as well as for shunting,

.Used for throttling depending on the applicable properties and the erosion

resistance of the sealing surface.

.Easy to install and maitenance.  Working Pressure: 10000PSI~20000PSI  Nominal Bore: 2”~4”

Working Medium: oil, natural gas, mud and gas containing H2S, CO  Working Temperature: －46℃~121℃（Class LU）

Material Class: AA、BB、CC、DD、 EE、FF、HH

Specification level: PSL1~4  Performance Requirement: PR1~2

Drilling choke –Disc type

.The stem and core are made of hard alloy, with

the performance of wear resistance and wash resistance.

.Convenient to adjust flow.

. Working Pressure: 2000PSI~20000PSI

. Nominal Bore: 2.1/16”~4.1/16”(52mm~103mm)

. Working Medium: oil, natural gas, mud

. Working Temperature: -46°C～121°C（Class LU）

. Material Class: AA、BB、CC、DD、 EE、FF、HH

Drilling choke –Cylindrica type

.The stem and core are made of hard alloy, with

the performance of wear resistance and wash resistance.

.Convenient to adjust flow.

. Working Pressure: 2000PSI~20000PSI

. Nominal Bore: 2.1/16”~4.1/16”(52mm~103mm)

. Working Medium: oil, natural gas, mud

. Working Temperature: -46°C～121°C（Class LU）

. Material Class: AA、BB、CC、DD、 EE、FF、HH