Applications

• Running  Standard downhole casing applications

• Rotating  To aid string advancement

• Drilling  With Casing/Drilling with Liners

• Driving

For use in non-abrasive environments.

Description

Specialty semi-premium connection machined from API Coupling Stock providing a low-cost Drilling with Casing/Drilling with Liner Connection. The GB CD Connection exceeds pipe body performance properties under all load combinations and is gas tight. Connection designed with refined API BTC Threads and will make up with off-the-shelf API BTC threaded accessories. Innovative, triple taper buttress 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.

Features

• Uses API BTC Pin Threads (Slightly Modified).

• Tighter diametric tolerances for enhanced performance.

• Meets API Coupling OD and Drift Diameter Specifications.

• Inter-changeable with API BTC accessories.

• Field proven in a variety of static and dynamic applications.

• Excellent make/break repeatability under field conditions.

• Enhanced fatigue life.

• Full Scale laboratory cyclic tests demonstrate enhanced fatigue life.

• Can be inspected with standard API Thread Gauges by any properly trained/experienced Third Party.

• Positive makeup indication with pin nose engagement in center of connection. Also, has API Triangle Stamp on Pin for secondary makeup verification.

• Innovative Triple Taper Design reduces localized bearing stresses for enhanced fatigue resistance and reduced galling potential.

• High Torque resistance.

• Drive-able.

Available

• Casing sizes 4 1/2" OD to 20" OD (lighter walls).

• All API Casing Grades and 16" OD through 20" OD Line Pipe; Grades X-56 and X-80.