• Cantilever design reinforces the connector, creates high contact pressure (leak resistance) in mating threads, limits expansion and distortion from make-up, reduces assembly pre-stresses, and minimizes thread galling.

• Interchange-able with standard API Buttress Connections eliminates cross-overs and special accessories, such as float shoes and collars.
  
  
• Inspect with standard API and MRP gauges and procedures.

• Makes up to an internal torque shoulder and has API triangle stamp for secondary make-up verification on the rig. 

• Maintains pressure integrity when special clearance.

• Taper shoulders self-center the connectors eliminating hang-ups when running through well-bore restrictions.

• Eliminates mill side of coupling.

• Independent physical testing demonstrates the connection is gas tight.
  
  
• 100% joint efficient under all load combinations. Will not jump out (or in) in high angle build sections common in directional drilling. 

Options

• Special Clearance OD (SC): Specify GB W Butt SC when ordering. See Data Sheets for minimum special clearance OD and associated properties.

Availability

• GB W Butt Connectors are stocked in 16" OD through 20" OD in K-55 Grade for use on K-55 and X-56 Casing.