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IMDEXModel DeviDrill™ -Steerable Wireline Core Barrel

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The DeviDrill is an innovative, directional core barrel based on the wireline core-drilling technology used in exploration drilling. It drills the hole in a curve while at the same time collecting a 3m/10ft core sample, leading to the application name, Directional Core Drilling (DCD). The DeviDrill fits directly to the standard drill string and is fully compatible with the N-size wireline system. There is no need for additional water pumps, drill strings, or survey instruments, with Devico's integrated survey instruments providing onboard orientation and directional measurement.

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  • Total weight : 57kg / 125lbs
  • Total length : 4.5m / 14.5ft
  • Bit diameter : NWL
  • Reamer diameter : NWL
  • Tool body diameter : 72mm / 2.83"
  • Hole diameter : 75.7mm / 3"
  • Core diameter : 31.5mm / 1.24"
  • Core length : 3m / 10ft
  • Instrument barrel length : 20cm / 8"
  • Instrument barrel diameter : 51mm / 2.01"
  • Pumping/latching unit : Longyear NQ™?
  • Landing ring : Longyear NQ™?
  • Landing indication : Yes
  • Core block indication : Yes
  • Pull out by-pass valve : Yes
  • Uses of additives : Optional
  • Typical dogleg severity (DLS) : 5-9°, 30m / 5-9°, 100ft
  • Operating flow : 30-50l/min / 8-13gal/min
  • Operating pressure : 20bar + circulation pressure
  • Feeding force (max) : 4500kg / 9900lbs
  • RPM : 300-1200