US Patent 7,347,459
Running Standard Large OD Downhole Casing Applications
Rotating To aid string advancement
Drilling with Casing / Drilling with Liners
For use in non-abrasive environments
Specialty semi-premium connection machined from heavy-wall coupling stock and forged blanks. The GB CDE 3P Connection performances exceed that of standard API connections. Connection designed with 3-Pitch threadform for easy-stabbing, fast makeup without cross-threading. Innovative, triple taper thread design (box only) reduces localized bearing stresses in critical areas for improved fatigue resistance. Pin noses engage shoulders in the coupling center for positive indication of proper field makeup. Pin noses, designed for maximum bearing face area, provide high torque resistance.