TP-FJ premium connections

The OD and ID are 100% Flush
Maximum Clearance
Designed for Medium or Heavy Wall Casing

Sizes5in~10-3/4in
1. Description
1.1 Thread Connection
Buttress threads form with a taper of 1:16 and a lead of 5TPI, which can be measured by API gauge. Threading on medium or heavy wall pipes. Pipe to pipe connection without couplings.
1.2 Metal-to-Metal Seal
Metal-to-metal seal surface can provide enough contact length and contact pressure. The metal-to-metal seal system offers excellent gas-tight sealing, even under the most severe combined loads. The seal integrity remains constant after repeated make-ups and break-outs. Optimized thread geometry minimizes the risk of galling, even when thread lubricants are poorly applied.
1.3 Torque Shoulder
A reverse angle torque shoulder provides accurate power-tight make-up, which also enhances metal-to-metal sealing.
1.4 Internal Profile
The OD and ID are 100% flush, which gives the maximum clearance.
1.5 Lower Stress Design
The lower stress design makes the connections reliable in Corrosive conditions.
2. TP-FJ Finite Element Analysis(FEA)
TP-FJ L80 5 1/2" x23#

Finite Element Analysis graphically illustrates the low-stress design which makes TP-G2 excellent choices for critical well applications.

Legend : 1——100%VME
2——95% VME
3——Recommend test load path

Legend :
T95 = tension 95% body yield, C33 = 33% compression
I95V = internal pressure equivalent to 95% VME
E100 = external pressure of 100% API collapse

3. Test Results：TP-G2 @ TGRC
TGRC=CNPC Tubular Good Research Center
TP110S 5-1/2in×23# (139.70×10.54 mm)
ISO 13679 IV
Bending=40°/100' (30.48 m)
Compression= 60%P.B.Y.S
VME=95%
Thermal Cycling@90%VME: 100 times