We operate 2 Foremost Dual Rotary drill rigs. We have a DR24 and a DR24 HD. These rigs are specially designed to handle unstable drilling formations at large diameters. The rigs have a two independent rotation drives, one for conventional drilling tools and the other to rotate casings. The unique casing drive allows the drill to set temporary casing of up to 24” diameter through collapsing or cavernous formations where conventional open-hole drilling is extremely difficult or even impossible.

specification DR24 DR24 HD
Top DriveStandardStandard
  • Stroke
  • Hoist Speed Up
  • Hoist Capacity Pullback
  • Pulldown
  • Torque (stall)
  • Rotation Speed
  • 26 ft (7.92 m)
  • 77ft/min (23.47 m/min)
  • 58,000 lbs (26300kg)
  • 20,000 lbs (9,000 kg)
  • 116,000 in-lbs (13100Nm)
  • 0 - 116 rpm
  • 26 ft (7.92 m)
  • 54ft/min (16.46 m/min)
  • 84,000 lbs (38000kg)
  • 25,900 lbs (11,800 kg)
  • Lower Drive
  • Stroke
  • Hoist Capacity Pullback
  •   Pulldown
  • Torque (stall)
  • Rotation Speed
  • Maximum Casing diameter
  • 12 ft (3.66m)
  • 72,000 lbs (33,000kg)
  • 33,000 lbs (15,000 kg)
  • 1,000,000 in-lbs (112,000Nm)
  • 0 - 6 rpm
  • 24" 609.6 mm
  • 12 ft (3.66m)
  • 117,000 lbs (53,000kg)
  • 42,000 lbs (19,000 kg)
  • 2,500,000 in-lbs (280,000Nm)
  • 0 - 6 rpm
  • 24" 609.6 mm
  • Compressor
  • Airflow
  • Pressure
  • Engine Power
  • 900 - 1,150 cfm (25.5 - 32.6 m3/min)
  • 350 psi (24.1 bar)
  • 475 - 600 hp(354 -447 kw)
  • 900 - 1,150 cfm (25.5 - 32.6 m3/min)
  • 350 psi (24.1 bar)
  • 475 - 600 hp(354 -447 kw)
  • Dimension
  • Length
  • Height
  • Width
  • Weight
  • 38 ft 9 in (11.81 m)
  • 13ft 9in (4.11m)
  • 8 ft (2.44m)
  • 56,000 - 72,000 lbs (25,400 -32,650 kg)
  • 38 ft 9 in (11.81 m)
  • 13ft 6in (4.11m)
  • 8 ft (2.44m)
  • 56,000 - 72,000 lbs (25,400 -32,650 kg)
  • Jib Boom Winch
  • Wire Rope Length
  • Wire Rope Diameter
  • Line Pull on Bare Drum
  • Line Speed on Full Drum
  • 140 ft (42.67m)
  • 1/2 (12.70mm)
  • 6,000 lbs (2,720 kg)
  • 100 ft/min (30m/min)
  • 140 ft (42.67m)
  • 1/2 (12.70mm)
  • 6,000 lbs (2,720 kg)
  • 100 ft/min (30m/min)
  • Water and Foam Injection
  • Capacity
  • Pressure
  • 12 - 20 gpm (45 - 75 l/min) 20 gpm (75 l/min)
  • 600 psi (41.4 bar)
  • 12 - 20 gpm (45 - 75 l/min) 20 gpm (75 l/min)
  • 600 psi (41.4 bar)
  • Waterwell Drilling.
  • General Building Foundation Constuction.
  • Hydraulic elevator Shift Drilling.
  • Dock/Wharf Construction.
  • Bridge Support.
  • Land Reclaimation Projects.
  • Dam construction and Rehabilitation.
  • Tie Back Holes.
  • Underground Mine Utility Shaft and Mine Abandonment.
  • Mine and Construction Site De-Watering.
  • Environmental Sampling.
  • Monitoring Wells.
  • Hollow Stem Augar Drilling.
  • Carthodic Protection.
  • Oil Field Rat Hole Drilling.
  • Benefits of Dual Rotary Drilling READ MORE

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