HARVEST TOOL COMPANY LLC
UNDERREAMERS, DRILL BITS, SECTION MILLS, CASING CUTTERS, HOLE OPENERS AND PROJECTILE TOOLS
Cavity Jet Underreamer




 
Cavity Jet Underreamer
Closed Position
  
Cavity 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 clean hole.
  • Increase recoverable reserves by having a lower final producable reservoir pressure.
  • 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.
  • Coal bed methane completions and harder rock completions.
  • Widen wellbore between cavitated zones to alleviate sloughing production bottlenecks.
  • Horizontal well intersection applications.
  • Underbalanced drilling of horizontal well applications.
  • Enlarged holes for downhole fluid separation and collection.
  • 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.
  • Various closed and open diameter combinations available.
  • Harvest has over 12 years of record underreams and hole enlargement.
  • Harvest has completed hundreds of wells to 6 foot (1829 mm) diameter or greater below 7 inch (178 mm) casing.
 

 

 

  

Cavity Jet Underreamer sizes with short or long pilot. Numerous sizes available. Please contact us as to closed diameter to open diameter combinations.

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