King Cobra®: Custom Flush | Liquid Tight | High Torque

Overview

King Cobra® is the ultimate flush joint solution—engineered to handle extreme refrac loads while preserving the clearance operators need most.

Custom Flush Design
At less than 1% over API pipe max OD, King Cobra preservers over 85% of pipe body strength – compare this to 60% for legacy flush connections.

Built for Refrac Realities
Designed to withstand the complex loading associated with the tight clearance realities of refrac wells — no compromise to design factors.

Flush Joint, Full Torque
Powered by the Constrictor® thread form, King Cobra® delivers more than 2X the torque of conventional shouldered flush joints.

Locked-In Integrity
Negative load and stab flanks lock the pin and box radially—minimizing movement and preventing jumpout.

Applications

Size Range

King Cobra®

Key Features

Custom Flush

No Coupling Stock

Seamless or ERW

Extreme Torque

High Tensile Strength

Constrictor® Wedge Thread

Learn more from our SPE-224351-MS paper:

Ott, W. L., and R. M. Brousard. “Advanced Modeling Techniques for Predicting String Connection Performance in Refracturing Operations.” Paper presented at the SPE Oklahoma City Oil and Gas Symposium, Oklahoma City, Oklahoma, USA, April 2025. doi: https://doi.org/10.2118/224351-MS