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. Like the GB CDE 3P, both the GB WSE
3P and GB HBE 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.
GB WSE 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 HBE 3P).