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                      Harvest Tool Company LLC

                      Underreamers, Drill Bits, Section Mills, Casing Cutters, Hole Openers, Projectile Tools

                      Jet Cavity Underreamer

                      • Patented "fluid through the blades" system that is unique to the industry.
                      • Air, air mist, water or drilling mud may be used for circulation.
                      • Optional fluid expulsion out end of blades for large diameter cavitation or clean out.
                      • Drill and ream simultaneously if desired.
                      • Various tipping materials available including:
                        • Tungsten carbide rollers
                        • Tungsten carbide 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 productive reservoir pressure.
                      • More efficient rock removal with lower percentage of rock disintegration and straighter hole.
                      • Reduced drill string torque which is easier on the drill string.
                      • Unplagued by cuttings which cause conventional underreamers to become stuck open.
                      • Easy open and close for cavity cleaning.
                      • Coal bed methane 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 or 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 Tool Company has over 18 years of record underreams and hole enlarements.
                      • Harvest Tool Company has completed hundreds of wells to 6 foot (1,829 mm) diameter or greater below 7 inch (178 mm) casing.

                      Main Office

                      1949 Independence Street

                      Lakewood Colorado 80215

                      USA

                      Phone: 303-470-9202

                      E-mail: info@www.xccsw.com.cn

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