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 API Coupling Stock. Like the GB CD 3P, both the GB WS 3P and
GB HB 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 meet
in the center for positive indication of proper field makeup. Pin noses, designed for maximum bearing face
area, provide high torque resistance.
GB WS 3P has integral, sacrificial wear sleeve to protect the leading edge and critical areas of the connection that commonly wear during drilling operations. For the most abrasive environments the wear sleeve can be furnished with hard-facing (GB HB 3P).