Downhole Directional Drilling Tools: Melfred Borzall

March 2010 Vol. 65 No. 3

The Ogre stacked plate reamer performs in hard soil conditions including shale, sandstone, caliches and cobbles.

Each cutter takes off only ¼ inch more soil than the previous stage for smooth, efficient cutting action. The angled jets shoot water opposite the reamer, pushing loose material out of the bore direction. Combined with a slow taper and deep-spiraled fluting, the Ogre produces maximum mixing and pumping. Curved backup blades make push-backs a snap and hardfacing on all wear areas, including conical carbide blocks in front, make this a long lasting reamer. Made for large capacity rigs, the Ogre starts at 14 inches on a 3.5-inch shaft with larger sizes available. 800.558.7500, www.melfredborzall.com