Brochure DRILCO Premium Tubulars
DRILCO premium tubulars manufactured in accordance with API, NS-1, or customer guidelines.
Rotary substitutes (subs) have two primary applications. They can be used to cross over from one connection size to another, or as the disposable component used to extend the connection life of a more expensive drillstem member. Rotary subs are available with box × pin, box × box, or pin × pin connections.
The following DRILCO rotary subs are available:
DRILCO offers a complete line of bit subs. They are made from materials that are heat-treated to drill collar specifications. Size availability ranges from 3 1/8- to 11-in OD and 36- to 48-in length.
A lift sub enables the safe, efficient handling of straight OD tubulars—such as drill collars, shock tools, jars, directional equipment, and other tools—by using the drillpipe elevators.
Top drive subs serve as the sacrificial element between the drillstring and the top drive, reducing repair and maintenance costs. These tools are manufactured from selected bars of alloy steel, heat-treated to provide the strength and toughness required to carry the entire weight of the drillstring. They exceed API specifications for drillpipe tool joint mechanical properties.