INTRODUCING: DLC™
A compatible drill pipe connection targeting: maximum asset performance, ease of service, and customer satisfaction
FEATURES
Dynamic Geometry
The DLC™ drill pipe connection features the patented VARI-Flank™ thread form technology. This technology is intelligently designed to optimize the stress relationship between the connection cross section and the thread flanks.
Not only does the VARI-Flank® thread technology provide enhancements that save time and money in the repair shop and on the rig, the DLC™ connection is compatible with Delta™ – the industry renown 4th Generation, high torque double-shouldered drill pipe connection.
Dynamic Durability
Thanks to the optimizations provided by VARI-Flank®, the DLC™ connection thread form has been enhanced to provide a smoother, more robust stabbing interface to absorb impact and more efficiently align connections during handling.
Rather than relying on additional in-house inspections to ‘weed-out’ unnecessary repairs, the DLC™ thread form instead provides an engineered solution to reduce thread damage at the source. This naturally results in greater operational reliability and longer connection life, ensuring your drill pipe assets perform at their best and are maximally utilized, even under challenging field conditions.
Dynamic Torque
The VARI-Flank® design works in tandem with the tool joint cross sectional design and geometry meaning DLC™ connection thread flanks are continuously variable over time and help to resist damage from over-torque events. As subtle changes occur in connection geometry when connections are subjected to extreme torque loads, the VARI-Flank™ design dynamically distributes compressive stress to lighter loaded thread flanks.
Whether being used with other DLC™ connections, or compatible connections, the dynamic VARI-Flank® action continuously reinforces and protects the metallurgical microstructure of the steel itself from the harmful effects of abrasion, galling, and cold welding, further increasing extreme torque resistance and delaying need for repair.
DEVELOPMENT
DLC™ 425 and Delta™ 425 Compatibility Testing
Testing
Compatibility testing is performed where combinations of DLC™ and Delta™ box and pin connections are cycled repeatedly at standard and enhanced makeup torques, and then subsequently broken-out and studied for damage.
In all approved designs, no damage may be induced on either connection family during testing to ensure the performance and behavior characteristics of the DLC™ connection meet all expectations.
DLC™ 425 and Delta™ 425 Pins; Post-Test Study
SPECIFICATIONS
In early stages of production
| Connection | Tool Joint OD | Tool Joint ID | Standard Makeup Torque | Enhanced Makeup Torque | Tensile Strength | Data Sheet |
|---|---|---|---|---|---|---|
| DLC™ 425 | 5.250″ | 3.000″ | 26,000 ft-lbs | 30,300 ft-lbs | 786,400 lbs | Download |
| DLC™ 544 | 6.625″ | 4.000″ | 50,300 ft-lbs | 58,700 ft-lbs | 1,211,500 lbs | Download |
Properties subject to change – please contact us for the latest specifications
CONTACT
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NOTICE OF NON-AFFILIATION AND DISCLAIMER
DLC™ drill pipe is not affiliated, associated, authorized, endorsed by, or in any way officially connected with Grant Prideco Inc., or any of its subsidiaries or its affiliates. All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.
LIMITATION OF WARRANTY
The information on this website is provided “as is” without any representations or warranties, express or implied. DLC™ drill pipe makes no representations or warranties in relation to the information on this website.