WorldWide Drilling Resource

9 WorldWide Drilling Resource ® MAY 2016 Hot Off the Press page is proudly sponsored by Aries Industries, Inc. Vortex Backhead Improves Drilling Performance Numa , designer and manufacturer of down hole hammers and bits, released the Vortex Backhead design to improve drilling performance and hammer/bit life when drilling conditions require a significant amount of water injection. The Numa Vortex Backhead avoids a drop-off of drilling performance by ejecting water out the top of the back- head before it can go through the internal hammer mechanisms. Numa engineers accomplished this by creating a spinning process (vortex) in the backhead which leverages the density difference between water and air. Fluids entering the top of the hammer are spun, pushing heavy material (water) to the outside to be ejected out the top of the backhead, keeping the solid particulates from pass- ing through the components. Lighter material (air) stays to the inside and travels down the feed tube to power the hammer and clean the bottomof the hole. The amount of water ejected by the Vortex Backhead can be controlled by two jets, or chokes, found at the top of the backhead. It is available for Numa’s 12- inch hammer line. For a link to this Web site, visit: worldwidedrillingresource.com