This "Heavy Duty" type represents Dimatec's premium line of reaming shells.
They are intended for use primarily on wireline core barrel assemblies with drill hole sizes of up to 6 inches (152 mm) in diameter.
The Dimatec "Heavy Duty" reaming shell is manufactured with a full matrix body gauge ring that is cast onto the steel tool body for maximum bond strength and tool integrity. The reaming shell gauge ring features include:
- Spiral waterway canals that are wider than those on the "D-Series" type and as such reduce the potential for blockage by pebbles or other debris.
- A tapered leading edge for ease of movement down the drill hole.
- Placement directly adjacent to the male thread connection to reduce the possibility of abrasive wash-out between the shoulder of the drill bit body and the gauge ring of the reaming shell.