Premium and Semi-Premium connections are a class of high-performance thread profiles that are used in today’s more sophisticated completions. Premium threads are available in a number of configurations and are typically designed to provide performance over standard API connections.
Integral connections are designed to perform at 30% – 115% of the tubular body strength. They can use the original tubular geometry or the tubular can be mechanically upset to provide more cross-sectional strength. Generally used in applications where wellbore clearance is critical.
Threaded and Coupled connections are designed to perform at 100% of the tubular body strength. They use the original tubular geometry and employ a larger diameter coupling to achieve connection strength.