OVERVIEW
The Dependable Workhorse
The Texas Steel Double Shoulder (TSDS) connection is built as the dependable workhorse for operators who want a clear step up from standard API threads without moving into the premium-connection category. It’s a rugged, reliable upgrade that supports smoother operations and fewer connection-related slowdowns, giving rigs a connection they can count on day after day.
Compatible with API
Same Thread Form, More Torque Capacity
By adding a reinforced secondary shoulder, TSDS delivers stronger torque handling, better load transfer, and reduced thread wear—all while staying fully compatible with existing API thread connections. Operators get more torque with the same turns and threads per inch they expect from standard API designs—elevating performance while staying fully interchangeable with existing API connections.
- Fully interchangeable with existing API connections
- 5 to 6 turns to make-up; same as API connections
- Two engaged shoulders instead of one
- More stable make-up
Technology
Double Shoulder Design
A double-shoulder thread connection delivers substantially higher torque capacity than standard API designs because it engages two load-bearing shoulders instead of one, creating a stiffer, more stable torsional path. By distributing torque across both the primary and secondary shoulders, the connection reduces thread shear, limits deformation, and maintains structural integrity under heavy cyclic loading—conditions where API threads begin to lose stiffness. This dual-shoulder geometry also improves make-up stability.
Performance
Higher Torque and Greater Stability
For operators, TSDS means fewer torque-related slowdowns, more confidence in the string as drilling conditions intensify, and a stronger version of the API connection they already know and trust.
- World Record in the Marcellus Play
- US Land Record for Longest Lateral
- US Land Record for Longest MD Well
- US Land Record for Longest 1-Run
- Expand Energy / Major Operator 24-Hour Footage Record
- Longest Run Drilled in the Utica
- Louisiana Record for Longest 1-Run
All of these bullet points would link to articles within the website.