3" Fig 1502 Female (Threaded) x 3-1/2" EUE Swage | High-Pressure Tubing Crossover Adapter

The 3" Fig 1502 Female (Threaded) x 3-1/2" EUE Swage is an ultra-rugged, precision-machined crossover adapter designed to provide a highly secure, leak-free transition from massive 3-inch surface flowlines directly to large-capacity 3-1/2" downhole tubing strings. This heavy-duty fitting features a 3-inch Figure 1502 Female threaded connection (designed to receive a standard 3" 1502 male sub and wing nut) on one side, and a standard 3-1/2" External Upset End (EUE) 8-Round tubing thread on the opposing end.

Manufactured from a solid block of high-strength, heat-treated forged alloy steel, this integral swage is built to withstand the extreme mechanical stresses, massive fluid volumes, and intense vibrations inherent in large-scale well intervention, high-rate frac flowback, and heavy cementing operations. By providing a direct step-down from a 3-inch 15,000 PSI manifold system to 3-1/2" wellhead tubing, it eliminates the need for multiple stacked adapters, reducing potential leak paths and significantly improving overall rig-up safety and efficiency.

By utilizing a seamless, integral (one-piece) forged design rather than a fabricated or welded construction, this adapter completely eliminates structural weak points. This ensures maximum blowout resistance, mechanical integrity, and a reliable seal during extreme high-capacity fluid transfer and heavy-duty well testing procedures.

Features & Benefits

• Integral Forged Construction: Machined from premium, solid alloy steel forgings, eliminating weld-seam vulnerabilities and maximizing fatigue resistance under massive pressure surges.

• Female Threaded Connection: Features a precision-machined 3" 1502 female thread, ready to securely accept any standard 3" 1502 male wing nut assembly for rapid field integration.

• Direct Tubing Tie-In: Safely and efficiently transitions from massive 3-inch, 15,000 PSI surface frac iron down to high-capacity 3-1/2" EUE well tubing.

• High-Pressure Durability: The 3" Fig 1502 female end is engineered for 15,000 PSI Cold Working Pressure (CWP). (Note: Overall system working pressure must be regulated to the maximum safe rating of the specific 3-1/2" EUE tubing being utilized).

• Precision Machined Threads: The 8-Round EUE tubing threads are cut to exacting API tolerances to ensure galling resistance and a perfect, leak-free high-pressure downhole connection.

Specifications & Technical Details

Applications

This 3" Female x 3-1/2" EUE Crossover Swage is an indispensable fitting for bridging the gap between heavy, large-bore surface equipment and high-volume downhole tubulars. It is heavily utilized in high-rate well testing operations, massive frac flowback tie-ins, heavy cementing procedures, and connecting high-capacity choke manifolds directly to the wellhead.

Quality Assurance

Every tubing crossover swage is subjected to strict quality control protocols. The alloy steel forgings undergo ultrasonic flaw detection to verify internal structural density. Additionally, the EUE 8-Round threads are meticulously inspected using calibrated API thread gauges, while the 1502 female threads are verified to exact tolerances to ensure seamless integration with male subs in the field.

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