TPCO Premiun thread casing

TP-JC Premium Connection

New Design Concept, First Zigzag Thread Structure
Joint Efficiency is 100% rated to Pipe Body Strength
Can Replace EU 
High ProductivityField Repair Friendly
Good Performancefor Middle and Low-pressure Gas Well

Sizes 2-3/8in~13-3/8in

1. Description 
1.1 Tensile Strength no Less than Pipe Body Yield Strength
The thread profile with 3° on the load flank, which meets mechanical locking condition, makes that fracture occurs under tension failure test, while jump-out occurs for API round thread. 
The thread critical section nearly equal to that of pipe body and enhances the joint strength.

1.2 Excellent Seal Ability—Gas Sealing Pressure Equal to 100% Internal Yield Stress 
Thread designed with small clearance—clearance between crest and root is 0.03mm, which minimizes the leakage path ( The clearance is 0.076mm for API round thread).
With optimizing thread parameters and appropriate make-up torque, the distribution of contact stress between pin and box surface is reasonable: high pressure between pin and box but stress concentration avoided, which improves the leakage resistance.

1.3 No Galling after Repeated Make-ups and Break-outs

2. Finit Element Analysis of TP-JC (Compared with API Round Thread) TP-JC 
 

API Round thread
 
FEA results
FEA results shows: no obvious stress concentration occurs between pin and box in TP-JC, but there’s higher contact stress between the contact surfaces; stress concentration occurs in API round thread. Therefore, the seal ability and galling resistance of TP-JC is better than API round thread.

TP-BM  Premium Connection
   

•  API BTC was used, mill end was screwed to the center of the coupling, field end was screwed to the mill end
•  Joint strength is the same as that of API BTC
•  Superior structural integrity under tension, high compression and high bending

 
Sizes  4-1/2in~13-3/8in

 1. Description 
1.1 Threaded Connection
API BTC thread form connection with a taper of 1:16, 5TPI, enables high connection strength.

1.3 Pin-pin Contact
Pin-pin contact connection form ensure accurate make-up stop. And provide higher over-torque resistant ability & better bending resistant ability. 

1.4 Internal Profile 
The streamlined internal profile minimizes turbulence and energy loss when high-velocity gas flows.

1.5 Coupling Design
A little bit shorter design than API BTC make sure Pin-pin contact connection. Because the coupling covers the vanishing threads, the connection tensile efficiency is maximized.

1.6 Lower Stress Design
The lower stress design makes the connections reliable in Corrosive conditions.

TP-JC Premium Connection

New Design Concept, First Zigzag Thread Structure
Joint Efficiency is 100% rated to Pipe Body Strength
Can Replace EU 
High ProductivityField Repair Friendly
Good Performancefor Middle and Low-pressure Gas Well

Sizes 2-3/8in~13-3/8in

1. Description 
1.1 Tensile Strength no Less than Pipe Body Yield Strength
The thread profile with 3° on the load flank, which meets mechanical locking condition, makes that fracture occurs under tension failure test, while jump-out occurs for API round thread. 
The thread critical section nearly equal to that of pipe body and enhances the joint strength.

1.2 Excellent Seal Ability—Gas Sealing Pressure Equal to 100% Internal Yield Stress 
Thread designed with small clearance—clearance between crest and root is 0.03mm, which minimizes the leakage path ( The clearance is 0.076mm for API round thread).
With optimizing thread parameters and appropriate make-up torque, the distribution of contact stress between pin and box surface is reasonable: high pressure between pin and box but stress concentration avoided, which improves the leakage resistance.

1.3 No Galling after Repeated Make-ups and Break-outs

2. Finit Element Analysis of TP-JC (Compared with API Round Thread) TP-JC 
 

API Round thread
 
FEA results
FEA results shows: no obvious stress concentration occurs between pin and box in TP-JC, but there’s higher contact stress between the contact surfaces; stress concentration occurs in API round thread. Therefore, the seal ability and galling resistance of TP-JC is better than API round thread.

More information Please contact with us.