The 4 ½ x 2 7/8” Tubing Hanger Coupling is a specialized connection component used in oil and gas wellhead systems to join two different sizes of upset tubing—4 ½-inch and 2 7/8-inch. This size combination is commonly selected when there is a need to transition from a wider tubing hanger profile to a smaller production string, without significantly restricting flow or compromising mechanical strength. The slightly larger 2 7/8” production tubing allows for greater internal flow area than smaller alternatives, making this configuration well-suited for completions that aim to support moderate to high production rates.

The coupling is designed with a union nut mechanism, which enables installation without rotating the Christmas tree or disturbing other surface equipment. This simplifies operations, especially in space-limited or sensitive surface environments. Both the top and bottom threads of the coupling can be manufactured to meet specific customer requirements, ensuring compatibility with a range of tubing string designs. Additionally, the coupling is threaded to accommodate a back pressure valve, offering an important safety feature by allowing well pressure to be managed during maintenance or pressure control procedures.

Constructed from high-grade steel and compliant with API standards, the 4 ½ x 2 7/8” Tubing Hanger Coupling offers high durability, corrosion resistance, and the mechanical integrity required for challenging downhole conditions. By supporting a secure, pressure-tight connection between tubing sizes, it plays a key role in maintaining well integrity and operational efficiency in various oil and gas production scenarios.

The 2” Tubing End Locator is a mechanical downhole tool used to determine the physical end of production tubing during well intervention or maintenance activities. It is a critical component in operations where it is necessary to confirm tubing length or avoid tool deployment beyond the tubing’s bottom, such as during setting packers, logging, or fishing operations.

In a typical well setup, production tubing does not always terminate at a predictable or recorded depth. The tubing end locator provides a reliable way to identify the true end of the tubing string by using a spring-loaded finger mechanism that reacts upon reaching the tubing’s bottom. This reaction is detectable at the surface, providing the operator with a clear and immediate indication without relying solely on depth readings or assumptions.

This specific model is intended for tubing sizes ranging from 2" to 2-1/2" outer diameter. It is designed with a maximum tool O.D. of 1.750", which ensures clearance inside the tubing, and includes a 1.375" fishing neck, a standardized feature that allows the tool to be retrieved if necessary using conventional pulling tools.

Threading is provided on both ends for integration into tool strings: a 15/16 - 10 UN pin connection on top and a 1 - 11.1/2 NPT box connection at the bottom. This allows the locator to be run inline with other mechanical or wireline-conveyed tools. These standard thread forms ensure compatibility with widely used downhole equipment and deployment systems.

Constructed from high-strength alloy steel, the tool is designed to withstand the mechanical stress, temperature variations, and chemical exposure typical in oil and gas well environments. While not a pressure-control device, its materials and design are selected to perform reliably under downhole pressure conditions encountered during standard intervention work.

The 2” Tubing End Locator provides a mechanical means of depth verification that does not rely on electronics, sensors, or depth counters. It is a simple, durable, and effective tool for reducing uncertainty and improving operational safety in the wellbore.

In oil and gas well operations, the 2 ½” Tubing End Locator plays a critical role in confirming the exact depth at which production tubing terminates within the wellbore. Accurately identifying the tubing endpoint is essential during various well intervention activities, including maintenance, workovers, and the installation or retrieval of downhole tools and equipment.

During operations such as setting packers, deploying plugs, running logging tools, or performing fishing jobs to recover stuck equipment, precise knowledge of tubing length ensures that tools are positioned correctly. This prevents accidental over-pumping or tool deployment beyond the tubing into the open hole section of the well, where damage to equipment or tool loss can occur.

The 2 ½” Tubing End Locator is designed specifically to fit tubing with an outer diameter of approximately 2 ½ inches. It features a compact maximum outside diameter of around 1.750 inches, allowing it to pass easily within the tubing without causing obstruction. The tool employs a spring-loaded finger mechanism that activates mechanically upon reaching the tubing bottom. This signal does not rely on electronic sensors or depth measurement devices, making the tool highly reliable even in harsh downhole environments where electronics may be compromised by pressure, temperature, or fluid conditions.

Standardized threaded connections on the tool—typically a 15/16 - 10 UN pin on the top and a 1 - 11 1/2 NPT box on the bottom—enable it to be seamlessly integrated into a wide range of intervention toolstrings. These common connection types ensure compatibility with existing downhole equipment and facilitate quick assembly and deployment.

Manufactured from high-strength alloy steel or similar materials, the tubing end locator is built to withstand typical downhole conditions, including high pressure, elevated temperatures, and corrosive fluids commonly found in oil and gas wells. Its purely mechanical design minimizes maintenance requirements and reduces the risk of failure compared to electronic alternatives.

This tool is particularly valuable in wells where tubing length may have changed due to wear, repairs, or previous interventions, offering an essential measure of control and confidence in complex well environments.

Available sizes: 2 3/8”, 2 7/8”, 3 1/2”, 4”, 4 1/2”, 5”, 5 1/2'” and 7”.

The 7-inch Subsurface Controlled Surface Safety Valve (SCSSSV) is a critical safety device designed to automatically shut in a well if uncontrolled flow occurs due to equipment failure or damage. It is installed in the upper part of the well to quickly isolate the producing zone and prevent uncontrolled release of fluids, ensuring well control in emergency situations.

This valve uses a flapper mechanism and is surface-controlled, meaning it can be operated from the surface. It features a self-equalizing design that reduces pressure differences across the valve during opening and closing, which improves reliability and extends valve life. The sealing surfaces are located outside the flow path when the valve is open, reducing wear and protecting key components from erosion.

Because the valve is wireline retrievable, it can be serviced or repaired without pulling the entire tubing string, minimizing downtime and intervention costs. It fits 7-inch tubing and is available with landing nipple seal bores of 5.750", 5.875", or 5.963". It can handle working pressures up to 10,000 psi and offers valve internal diameters of 3.38" and 3.50", allowing operators to balance safety and flow requirements effectively.