HARVEST TOOL COMPANY LLC
UNDERREAMERS, DRILL BITS, AND PROJECTILE TOOLS
Jet Underreamer




 
Jet Underreamer
Closed Position
  
Jet Underreamer
Open Position
 

  

U.S. Pat. and Pats. Pend., Foreign Pats. Pend.

  • Patented "fluid through the blades" system unique to the industry.
  • Air, air mist, water or drilling mud circulation may be used.
  • Optional fluid expulsion out end of blades for larger diameter cavitation or clean out.
  • Drill and ream simultaneously if desired.
  • Various tipping materials available including long life tungsten carbide rollers, tungsten carbide disc cutters, pdc (polycrystalline diamond compact) disc cutters, hardfacing.
  • Circulation used more efficiently to open tool and jet kerf cut various rock formations.
  • More efficient rock removal with lower percentage of rock disintegration and straighter hole.
  • Reduced drill string torque. Easier on drill string.
  • Unplagued by cuttings which cause conventional underreamers to become stuck open. 
  • Easy open and close for cavity cleaning.
  • Available in short pilot nose or long pilot to allow leading bit to track previous hole.
  • Special alloy steel with high hardness and impact strength.
  • Widen wellbore between cavitated zones to alleviate sloughing production bottlenecks.
  • Horizontal well intersection applications.
  • Underbalanced drilling of horizontal well applications.
  • Downhole fluid separation and collection applications.
  • Various closed and open diameter combinations available.
 

 

 

  

Jet Underreamer (JU) Sizes with Short or Long Pilot:
 Tool  Closed Diameter  Open Diameter  Available Tipping
 JU  6 inch (152 mm)  24 inch (610 mm)  TC HF, TC or PDC Discs, TC Inserts, TC Rollers
 JU  6 inch (152 mm)  36 inch (914 mm)  TC HF, TC or PDC Discs, TC Inserts, TC Rollers
 JU  6 inch (152 mm)  48 inch (1219 mm)  TC HF, TC or PDC Discs, TC Inserts, TC Rollers
 JU  6 inch (152 mm)  72 inch (1829 mm)  TC HF, TC or PDC Discs, TC Inserts, TC Rollers
 JU  6 inch (152 mm)  96 inch (2438 mm)  TC HF, TC or PDC Discs, TC Inserts, TC Rollers
 JU  9.5 inch (241 mm)  24 inch (610 mm)  TC HF, TC or PDC Discs, TC Inserts, TC Rollers
 JU  9.5 inch (241 mm)  36 inch (914 mm)  TC HF, TC or PDC Discs, TC Inserts, TC Rollers
 JU  9.5 inch (241 mm)  48 inch (1219 mm)  TC HF, TC or PDC Discs, TC Inserts, TC Rollers
 JU  9.5 inch (241 mm)  72 inch (1829 mm)  TC HF, TC or PDC Discs, TC Inserts, TC Rollers
 JU  9.5 inch (241 mm)  96 inch (2438 mm)  TC HF, TC or PDC Discs, TC Inserts, TC Rollers
 JU  12 inch (304 mm)  24 inch (610 mm)  TC HF, TC or PDC Discs, TC Inserts, TC Rollers
 JU  12 inch (304 mm)  36 inch (914 mm)  TC HF, TC or PDC Discs, TC Inserts, TC Rollers
 JU  12 inch (304 mm)  48 inch (1219 mm)  TC HF, TC or PDC Discs, TC Inserts, TC Rollers
 JU  12 inch (304 mm)  72 inch (1829 mm)  TC HF, TC or PDC Discs, TC Inserts, TC Rollers
 JU  12 inch (304 mm)  96 inch (2438 mm)  TC HF, TC or PDC Discs, TC Inserts, TC Rollers
Please contact us for additional or custom sizes.  

E-Mail

HARVEST TOOL COMPANY LLC
6801 North Peterson Road, Sedalia, CO 80135, U.S.A.
phone: (303) 470 9202
facsimile: (303) 470 3821
www.harvesttool.com
www.underreamer.com