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.