Casing 7″ / TPCO/ 35 ppf/ P110/ Conn: TP-CQD/R3/PSL3

 Casing Pipe 7″ / TPCO / Grade P110 / TP-CQD Connection / Range R3 / PSL3 / API 5CT / 35 ppf Nominal Weight

:Technical Specifications & In-Depth Engineering Description

This premium 7 inch OCTG casing, manufactured by TPCO (Tianjin Pipe Corporation) one of the world’s largest and most advanced seamless pipe producers is specifically engineered for demanding production and intermediate casing applications. Fully certified to API 5CT with Grade P110, PSL3 (Product Specification Level 3), TP-CQD premium connection, Range R3, and a Nominal Weight of 35 ppf, this pipe delivers exceptional mechanical performance and reliability

:Key Parameters

:Grade P110 – High Strength for Deep Wells

Grade P110 offers an excellent strength-to-weight ratio with minimum yield strength of 110,000 psi. The quenched & tempered martensitic microstructure ensures

High collapse and burst resistance

Superior tensile strength for deep well applications

Consistent mechanical properties along the entire pipe length

Note: For sour service (H₂S environments), alternative grades like P110S, C110, or C95 are recommended. Consult our technical team for application-specific requirements.

:PSL3 Quality Level – The Highest Standard for Critical Wells

PSL3 (Product Specification Level 3) imposes the most stringent requirements in API 5CT, making this casing suitable for the most demanding applications

Combined Loading

:TP-CQD Premium Connection – Engineered for Combined Loading

.The TP-CQD connection is TPCO’s proprietary premium thread design for severe service conditions

:Key features

Metal-to-Metal Seal: Optimized taper and interference for leak-tight performance up to 100% of pipe body internal pressure

High Torque Capacity: Designed for horizontal and deviated wells requiring pipe rotation during cementing or drilling

Torque Shoulder: Prevents back-off under vibration, pressure cycling, and thermal cycles

Optimized Flow Geometry: Reduced turbulence and pressure drop across connections

Tensile Efficiency: >90% to 100% of pipe body strength (depending on size and weight)

Fatigue Resistance: Suitable for wells with cyclic pressure and temperature loading

API Compatibility: Inspectable with API gauges (with adapters) or TPCO proprietary gauges

Operational Efficiency with Range R3: Using Range 3 (R3) joints reduces the number of connections per well by 25-30% compared to Range 2, resulting in:

Faster running times (15-25% rig cost savings)

Reduced leak paths (fewer connections = lower risk)

Enhanced structural integrity in deep wells (>3,500m / 11,500ft)

Better performance in long horizontal laterals

Reduced string weight due to elimination of some couplings