National Oilwell Varco Completion Drill Pipe

Description New design challenges for deepwater, extended reach and other critical completion operations have limited conventional use of industry-standard workstrings and prompted development of a new completion pipe capable of addressing demands for high torsional strength, gas-tight seals and a streamlined connection profile. In response, a specialized tubular with metal-to-metal pressure seal connections has been developed as a new completion pipe option. High-performance TurboTorque-M™ (TT-M™) and eXtreme™ Torque-M™ (XT-M™) metal-to-metal seal connections provide the robust configuration of a rotary-shouldered connection with the pressure integrity of a premium connection. The completion pipe’s streamlined configuration provides an oversized inside diameter throughout the connection and tube to maximize hydraulic efficiency and provide for unobstructed tool passage through the completion string. Maximizing tool joint inside diameter and shifting tube upsets to the exterior are options for minimizing flow restrictions. The dimensional flexibility of the TT-M™ and XT-M™ durable, welded high-performance tool joints provides advantages not seen in typical API tool joints or threaded upset tubing connection configurations. The new completion pipe provides superior leak resistance in high-pressure applications while maintaining torsional capacities comparable to double shouldered rotary connections. The seal integrity of the connection has been successfully pressure tested after 100 make-up and break-out cycles. • eXtreme™ Torque-M™ connections are rated to withstand up to 15,000 psi internal and 10,000 psi external gas pressures • TurboTorque-M™ connections are rated to withstand up to 20,000 psi internal and 10,000 psi external gas pressures Customized completion pipe offers a viable option for multiple operations such as drill stem tests (DST), drilling out cement, displacing mud with completion fluid, conveying perforating guns and performing a frac job.