- Company Name:Kergy Oilfield Equipment Co.,Ltd
- Membership:Free Member
- Registration Date:2013. 03.08
- Contact:Eva Fan
- Related Keywords:Wellhead, API6A, oilfield equipment, Gate valve
Kergy Oilfield Equipment Co.,Ltd
|Product name : Wellhead|
Function: During drilling operation, casing head is an important equipment for controlling wellhead pressure.
Raw Material: Carbon steel or low alloy steel comply with API Spec.6A.
Applied Casing Program: 20"×13-3/8"×9-5/8"× 7"×5-1/2", or as user's requirements.
Bottom Connection: welded type, slips type, thread type.
Outlet connection: thread type, flange type(c/w VR plug thread).
1. Casing Head-Bottom Slip Connection
(1) Connect surface casing by type WD slip.
(2) Adopt type BT secondary seal structure.
(3) Accurately calculate casing string's length is not necessary.
(4) Can not be affected by surrounding environment, oilfieldkergyatgmaildotcomclimate, etc.
(5) Easy, rapid, safe and reliable in installation.
Can apply to different sizes casing, such as: 30",20",13-3/8",12-1/4",9-5/8",7",5-1/2".
Can apply to different sizes casing as:13-3/8",9-5/8",7",5-1/2"etc.
We can manufacture a variety of bottom thread such as CSG, LCSG, BCSG, TM, for the connection
between casing head and surface casing.
2. Casing Head-Bottom thread connection
(1)Bottom of the casing head connects surface casing by various types of threads,such as CSG,LCSG,BCSG,TM,ETC.
(2)Convenience and rapid in installation,safe and reliable in operation.
3. Casing Head-Bottom welded connection
(1)Bottom of the casing head connects surface casing by welding.
(2)There’s pressure test hole, which can test welding effect, in welding annular space.
Bottom can be connected to surface casing by the method of sleeve welding.Pressure testing holes are
designed for the test of welding effect.
Applied Casing Program:20",13-3/8",9-5/8",7",5-1/2", etc.
CASING HEAD SPOOL
Tubing hanger has various structure forms:
·Taper type and straight type
·Metal-to-metal seal and non-metal seal
·Back pressure valve thread
·Various cable penetrator channel, control pipeline channel of subsurface safety valve.
Chemical reagent injection channel and capillary channel.
·The upper and lower threads may be API tubing threads and VAM threads
·The material of seals is hydrogenated Buna-N,and the slip bowl, slip and support base are made of low alloy steel
·Pack-off is automatically energized with casing weight.
·Casing hanger with slip design has high load capacity.
·It’s applicable to all casing heads and casing spools.
Surface casing slip Type Casing Hanger
The type casing hanger is used for connecting casing head and surface casing through slip tightening
casing with help of external force. It is of easy& reliable operation.
·It can connect surface casing for 20″, 13.3/8″,9.5/8″.
Wearing bush is applied to operation of well drilling and workover for protecting casing head and casing head spool.
It could be loaded into casing head or casing head spool via pressure test running& retrieve tool, then to be hold down
by the top flange on casing head or casing head spool.
Scope of supply:
Working pressure: from 2,000psi to 20,0000psi
Nominal diameter: from 7.1/16” to 21.1/4”
Working medium: crude oil, gas, drilling fluids,
natural gas involving H2S, CO2
Working temperature: -46℃ to 121℃ (L U)
Material class: AA, BB, CC, DD, EE, FF
Specification level: PSL1-4
Performance requirement: PR 1-2
To complete with air or hydraulic safety valve at option
Choke manifold is necessary device to control the well kick successfully and execute the pressure control
technology on oil/gas well in the course of drilling, as it is, the device is adopted to execute new drilling-well’s
technique of balance pressure, which can avoid pollution of oil-layer, improve the speed of drilling and control
blowout effectively. One end of the device connects with the side flange of BOP spool. When BOP closes, it can
control the finite pressure from casing by adjusting the choke valve’s opening, so balanced drilling can work
under minimum pressure-difference.
The choke manifold consists of choke valves, gate valves, line pipes, fittings, pressure gauges and other
3. Working Principles
When the pressure inside the well rises, opening/closing the choke valves (including manual chokes, hydraulic
chokes and positive chokes) on the choke manifold can allow the release of the fluid inside the well so as to
control casing pressure, which can be directly blown out through the gate valve if the casing pressure is quite
4. Pressure Ratings
The kill manifold is available in pressure ratings of 14MPa, 21MPa, 35MPa, 70MPa and 105MPa, and also
can be available upon customer request.
5. Operating Instructions
(1) The working pressure of all components on the choke manifold shall be compatible with that of the BOP
(2) The choke manifold shall be installed at the place where the operator can reach it easily. The pressure
test must be performed prior to installation and the seat test pressure shall be equal to the rated working
(3) The line pipe shall be level and straight as much as it could. In case of the turn of the line pipe, the 120
degree steel bent pipe shall be used. The bore of the line pipe shall be large enough.
(4) The pressure gauge must be installed.(5) In winter, the choke manifold can work under a low temperature
In case of increase of the well head pressure, the kill manifold can provide a means of pumping heavy
drilling fluid into the well to balance bottom hole pressure so that well kick and blowout can be prevented.
In this case, the increasing well head pressure also can be released directly through blowdown lines
connected to the kill manifold so as to release bottom hole pressure, or the water and extinguishing agent
can be injected into the well using the kill manifold. The check valves on the kill manifold only allow injection
of kill fluid or other fluids into the well bore through themselves, but do not allow any backflow so as to
perform the kill operation or other operations.
The kill manifold consists of check valves, gate vales, pressure gauges and line pipes. The one end of the kill
manifold is connected to the drilling spool and the other end is connected to the pump. The kill manifold and
choke manifold are both designed to API 16C and can be used together. The kill manifold is available in pressure
ratings of 14MPa, 21MPa, 35MPa and 70MPa.
3. Operating Instructions
(1) The working pressure of all line pipes, gate valves and check valves shall be compatible with that of the
BOP stack used.
(2) The kill manifold is not intended to be used as common lines for pouring drilling fluid.
ZJGH100/35 drilling fluid manifold consists of Z23Y100-5000PSI & Z23Y50-5000PSI mud valve,The part required at high precision, should be machined with special technique to ensure the manufacture quality,
high-pressure spherical union, high-pressure core union, tee, high-pressure hose, elbow, pressure
gauge, and pup joint etc.
Ground valve-group adopts goose type tee with compact structure, little fluid resistance and large
power effectuality. Adaptor spool adopted on rigid valve-group can be directly used as single pipe on site.
High-pressure union, made of high-strength alloy steel and heat-treated, can create quick strip. As for
being manufactured with special machining tool, it can create seal under fine sphere and core matched
with sealing ring.
The gate and valve seat of Z23Y-5000PSI mud valve are welded with carbide against erosion and corrosion,
so that it can enlarge the working life, little operating torque.
Elbow, adaptor, tee and cross are made of high strength alloy steel, with suited wall thickness and fine heat treatment,
so it can meet the requirement on strength and corrosion.
and the pressed part should be hydrostatic tested on strength and sealing property to ensure the ex-plant quality.
1. First to clean up each sealing face and sealing groove of union and coat it with grease and get rid of dirt from the pipeline.
2. Check whether each jointer is fastened or not.
3. As for shipping, to disassemble into parts, clean up pipes, coat the connections with grease and then, to be wrapped
well up to avoid foreigner entrance and sealing surface damage.
1. Regularly inject mud gate valve with grease to maintain the gate valve;
2. Regularly check whether all connecting position and
fixing bolts are loose;
3. If leak around sealing position, the seal should be replaced immediately;
4. Keep the outer surface of the manifold clean and paint it against rust regularly.
Flowhead Assembly Summary
Bore size is 3-1/16” , Max Working Pressure is 10000psi(1034bars).failsafe operation: designed to close the
metal to metal sealing between gate and seats . Temperature range :-20℉ TO 250℉ ; Material class : DD
Connections : Top is 5-3/8”-4ACME-2G-RH box (handling sub ) , bottom is 5-3/8”-4ACME-2G-RH box (saver sub) .
45°kill line connection : 3” fig 1502 Female sub
45°kill line connection : 3” fig 1502 Male sub
Make up torque: All 5-3/8”-4ACME connections will be torqued to 6500 ftl Ibs. before shipping from manufacturer .
Other products from this supplier
Related products from premium suppliers on EC21
Business Registry Number: 120-86-03931