Thread-forms began with the simplest geometries, restricted by designing tools, machining tool manufacturing capability and machine limitations. Through the years, thread-forms have evolved in shape and function, most recently with a “wedge” shape, intended to “lock” the threads together. This “wedge” technology has now been improved beyond the traditional simple shapes into a “multi-faceted” shape of which TorqueLock Corporation holds numerous current patents. The angled “facets” can be changed according to the intended loads to be introduced to the particular connection. Numerous variations of the faceted thread form can be adjusted to improve certain capabilities where required and new, higher capability thread-forms and seals are currently under analysis at TorqueLock.

First Generation

Second Generation

Third Generation

Advantages for our thread technologies include: Improved pressure containment internally and externally Ability to rotate with axial tension and compression resistance while in severe bending Improved fatigue resistance Free running makeup Improved torque resistant Connection equal to pipe body yield strength Improved thread profile stress riser reduction Improved axial, radial, and hoop stress control Improved makeup and breakout capabilities Lower maintenance

TLC Patents issued: Patent #6,254,146 B1 ***** Thread Form for Multifaceted Thread Flanks Patent #6,722,706 B2 ***** Fatigue Feature with Multifaceted Thread Flanks Patent #7,007,984 ***** Hang Free Thread Design Patent #6,832,789 B2 ***** Omni Cylindrical Metal to Metal seal Patent #4,600,224 ***** Chevron Wedge and parallel Thread Form

*NuLock and SealLock are trademark of Hunting International, Dovetail is trademark of Tenaris*

Torquelock Corporation is considered the leader in wedge thread technology throughout the world. We have the experience and knowledge required to develop wedge thread connections which perform beyond expectations. Developing a wedge thread connection is an art, and Torquelock has mastered it. Our staff has over 200 years cumulative experience in OCTG connection development and is capable of exceeding any challenge presented.

Wedge Thread Form

Wedge Spiral

Wedge Connection

Advantages for having a wedge connection include:

• Helps reduce chance of down-hole “back-off”.
• Helps reduce chance of down-hole “helical advancement”, preventing over-torque or failure, even during string rotation.
• Affords adjustable and predictable torque values.
• Increases the connection efficiencies, including higher torque and increased bending capabilities