Spontaneous wells and mechanical recovery wells are important equipment used to exploit oil and gas and test oil and gas after completion. <br>
It can control the pressure of oil and gas wellhead and adjust the flow of oil and gas wellhead.

For working conditions with high content: the body adopts cladding welding process, which meets the requirements of HH level wellhead.
The pressure control part is made of nickel base alloy 718 material.
The metal sealing ring is made of nickel-based alloy 825.

Single barrel double well wellhead and Christmas tree is used in drilling, well completion, oil production and other operations on offshore platforms.
The layout of the well groove is compact, which is suitable for the narrow space of the offshore drilling platform.
It satisfies the working conditions of the offshore platform to a greater extent.
Double wells meet high production demands.

It is composed of wellhead spool, primary mandrel hanger, secondary mandrel hanger, tubing hanger and integral Christmas tree. <br>
The integral structure reduces the drilling and completion operation time and reduces the drilling and completion operation cost. <br>
The blowout preventer components are installed once to complete the entire drilling process, improving the efficiency of drilling and completion operations.

Two parallel oil pipes are installed in the same production casing, and two independent oil (gas) production channels are formed through the wellhead.
The production of two oil and gas layers can be completed without drilling two wellbores.
Improve operating efficiency and reduce production costs.
The performance is stable and reliable.

Strong corrosion resistance: suitable for complex fracturing conditions with high acid content, high oil (gas) content and high H2S and CO2 content.
The sealing position of the valve in the wellhead is welded with corrosion-resistant materials, which greatly prolongs the service life. <br>
High fatigue resistance, suitable for fracturing methods with alternating pressure cycles and multi-stage fracturing construction. <br>
The rated pressure of the equipment is high, which can meet the requirements of deep wells and high pressure fracturing conditions.

Slab gate valve is the main control component of
wellhead and manifold; can also be used
separately as needed. According to its structure can be divided into: manual rising stem
slab gate valve, manual non-rising stem slab gate valve, hydraulic slab gate valve.

Surface safety valve is a special valve whose opening and closing parts are in a normally closed state under the action of external force. When the medium pressure in the equipment or pipeline rises above the specified value, it discharges the medium to the outside of the system to prevent the medium pressure in the pipeline or equipment from exceeding the specified value. The safety valve plays the role of safety protection in the system.

Choke valve is a valve that control fluid flow or pressure by changing the throttle area. The types of choke valve are fixed type, needle type, cage type and orifice type, which adjust the flow and pressure by changing the cross-sectional area of the channel. Usually, the flow rate of the medium between the choke disc and the valve seat is very high, which leads to cavitation on the surface of the choke regulator. In order to minimize cavitation damage, Douson's restrictors are made of materials with excellent cavitation resistance (made of wear-resistant alloy).