Liner Family

Hard reamers 58 to 65 HRC, 1/100 rising, right-hand cutting, straight groove.

The Drillstar X-Reamer is a unique underreamer, capable of extended reach underreaming through reduced clearances. Introduced in 2005, it proved itself as a reliable and efficient solution for enlarging the borehole beyond bit diameter. Combining a flip-arms expansion mechanism with unique stabilization features, the X-reamer is capable of enlarging over 100% of the pilot hole size, making it the tool of choice for gravel pack installation, window reaming, plugging or gas storage applications. Each body can be fitted with any size of arms within its opening range. Extra arms can be manufactured and delivered worldwide on short notice. Custom bodies can also be manufactured to accommodate different hole IDs. The X-reamer cutting arms shape is designed to maximize stabilization and reduce the effect of lateral impacts on PDC cutters by presenting a large, passive gauge structure. They feature two rows of premium PDC cutters, for improved ROP and downhole time. Hardfaced stabilizing

Based on the same design as the innovative Z-Reamer, the Drillstar S-Reamer is a hydro-mechanically activated underreamer with significant advantages over other modern underreamers. Like the Z-reamer, the S-Reamer provides 'one bit size up' reaming (or about 50% of pilot size) in even the smaller hole sizes (6 in. and below). The S-Reamer features reaming blades with a dense front and back-reaming cutting structure, as well as a long gauge length. This provides optimal lateral stability to minimize vibrations, improving cutter life and ROP. The S-reamer is a sturdy tool, tested to perform In harsh drilling environments while remaining simple enough to be maintained in the field with few spare parts and hand tools, reducing turnaround time between runs and improving reliability.