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.

The 4” Tubing End Locator is designed specifically for use with larger production tubing strings common in wells that require greater flow capacity or enhanced mechanical strength. This size is typically found in wells with higher production rates or more demanding operational requirements, where accurate depth confirmation becomes even more critical.

This model is specifically sized for 4-inch outer diameter tubing, featuring a maximum outside diameter that fits comfortably within the tubing’s internal dimensions. This sizing ensures that the locator can move smoothly without obstruction while maintaining effective contact to detect the tubing end. The core mechanism involves a spring-loaded finger that extends outward upon contacting the tubing bottom. This movement translates into a tactile signal felt at the surface, eliminating the need for complex electronic systems and reducing the risk of failure in harsh downhole environments.

Equipped with standardized threaded connections—commonly a 1-9/16 - 10 UN pin on the top and a 1 - 11 ½ NPT box on the bottom—the tool integrates easily into typical slickline, wireline, or coiled tubing toolstrings. The fully mechanical design enhances reliability, making it well-suited for use in conditions of high pressure, elevated temperatures, and corrosive fluids often found in oil and gas wells.

The 4” Tubing End Locator is especially valuable in wells with larger tubing sizes where accurate depth confirmation is critical to avoid operational errors. By providing a straightforward and dependable method to locate the tubing end, it supports safe and efficient well intervention, helping to reduce downtime and operational risks.