TTFJ

The Tejas Tubular TTFJ* features a rugged straight to taper connection design. This is a double lead connection– for every revolution the connection makes up on two threads for faster make-up. The straight section is designed for deep stabbing, while the tapered section provides negative load flank threads, capable of providing sealing to 100% internal pressure while preventing jump-out. The primary metal-to-metal radial seal and the secondary axial metal seal, tested with combined loads of tension and compression to 95% Von Mises ellipse (VME), providing 100% internal pressure with gas, at ambient and elevated temperature to 365°F.

SPECIFICATIONS

WHY TTFJ?

APPLICATIONS

  • Slim hole well design
  • Drilling/production liner
  • Scab liner – repairs

FEATURES

  • Straight-to-taper thread design
  • Unique metal-to-metal seal design
  • Integral connection
  • Flush ID and OD to pipe body
  • Negative load flank thread
  •        

BENEFITS

  • Gas tight
  • Longer metal-to-metal seal contact
  • Design prevents jump-outs
  • No coupling required
  • 100% efficiency under internal pressure
  • Deep stabbing for faster make-up
  • Reduced erosion corrosion due to flush ID
  • Eliminates galling risk
  •      

FINITE ELEMENT ANALYSIS (FEA)

A finite element analysis (FEA) of the TTFJ connection was conducted by an independent third party engineering firm to confirm the connection’s design performance.   

TORQUE-TO-YIELD

Torque-to-yield testing was performed to verify the torsional limits of all TTFJ connections.

Brochure