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Neway Oil Equipment (NOE)'s wellhead Christmas Tree assembly offers a wide range of flexibility, compatibility and interchangeability for both onshore and offshore platform applications. In addition, NOE is capable of meeting various detailed specifications, providing competitive pricing and standard components as required. The Christmas Tree is wellhead equipment used for oil production in flowing wells and artificial lift wells. It is the primary equipment at the top of oil and gas wells for controlling and regulating hydrocarbon production, and mainly consists of three parts: the casing head, the tubing head and the oil (gas) Christmas Tree body.
Single Barrel Double Well Technology is an advanced conductor-sharing drilling technology designed for specific scenarios in offshore oil and gas development. It is particularly suitable for offshore marginal oilfield development and adjustment well operations — the former is characterized by relatively limited reserves and high sensitivity to development costs, while the latter plays a key role in well-pattern optimization in the mid-to-late stage of oilfield development. Both impose high requirements on space-utilization efficiency and development cost-effectiveness. The core advantage of this technology is that it breaks the conventional mode of one well-slot for one wellbore. It enables accurate drilling of two directional wells within a single well-slot and delivers an efficient configuration where two wells share one set of conductor pipes. Given the common space constraints of offshore platforms, this design makes full use of limited well-slot resources to drill more wellbores and prevents development scale from being restricted by insufficient well-slots. Meanwhile, it eliminates the need for additional conductor procurement and installation, optimizing platform spatial layout and reducing upfront engineering investment. Highly compatible with the development requirements of cluster-well platforms, this technology improves well-pattern density by increasing the number of wells drilled per well-slot, helping cluster-well platforms cover reservoir areas more efficiently.
The Dual Tubing Wellhead is key equipment for multi-zone reservoir development. Integrating two independent tubing strings within a single assembly, it enables the simultaneous production and management of two distinct downhole zones. Its core advantages are threefold: first, tailored production strategies can be designed for zones with different pressures and productivity characteristics, preventing inter-zone crossflow and enhancing recovery; second, fully independent control and monitoring systems allow single-zone operations (such as workover or fracturing) to proceed without affecting production from the other zone. In addition, dual-zone production from a single well reduces land use and well construction costs, while the independent emergency design lowers operational safety risks.
The extra‑large‑bore geothermal wellhead assembly can withstand extreme temperature and pressure, and is suitable for geothermal well environments with high temperature and high pressure. It also features reliable sealing performance to prevent air ingress into the system and mitigate corrosion of metallic equipment.
The electric submersible pump wellhead assembly generally consists of wellhead christmas tree, cable penetrator and sealing devices. Its design allows cables to pass through the wellhead and connect to the down‑hole electric submersible pump, while ensuring wellhead sealing performance.
The leaching wellhead assembly features conventional gas injection and gas production functions as well as integrated brine‑drainage capability, meeting the requirement of brine removal in the initial construction phase of gas storage reservoirs. To remove brine inside the cavern, a brine‑drain tubing string needs to be run inside the injection‑production tubing string. Due to large injection‑production flow rate, the injection‑production tubing string adopts a relatively large diameter, which brings challenges for the selection of matching tools.
The Air Storage Injection and Production Wellhead typically adopts a large‑bore design to meet the demand for rapid injection and production of high‑pressure gas, reducing gas flow resistance and improving injection‑production efficiency. It must withstand high‑pressure environments and, when used in gas storage spaces such as salt caverns, also possess excellent corrosion resistance.
The casing head is the lowermost part of the wellhead assembly and is normally connected to the outermost surface casing. It provides support for subsequent wellhead and well completion equipment.
The tubing head is mounted on top of the uppermost casing head, used to support the weight of the tubing string and seal the annulus between the production tubing and production casing.
The slip casing hanger provides a method to transfer casing weight or tension load to the casing head. It has auto‑actuated and manually‑actuated types. The seal of the auto‑actuated type is driven by casing weight, while the seal of the manually‑actuated type is energized by manually tightening bolts after the casing is landed in place. Manually‑actuated hangers are generally used when the casing load is insufficient.
Fracturing Tree serves as the fracturing channel at the wellhead, which meets requirements at different stages of on‑site operations via combined switching of multiple valves. It is usually composed of two manual gate valves and one hydraulic gate valve.
Universal Manifold (also known as E‑type fracturing manifold) connects the ZIPPER module (which receives fracturing fluid) to the fracturing tree, used for oil and gas well fracturing. As the fracturing tree and ZIPPER module are usually located in oilfields with uneven terrain and different heights, the manifold enables their connection, which was traditionally difficult.
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