6" to 12" borehole to a depth of 1200 feet (363 mtr.) with DTH.
Prime Mover
Truck mounted Rig with power from truck engine.
Work Method
Rotation with direct circulation, nucleus destruction with bleeding
by air, water, foam by DTH, rotary using drag bit/rock roller bit in over burders.
Mast
Box type structure
Max. Capacity
44000 Lbs (20 tons.)
Height
27 feet (8 mtr.)
Rod handling capacity
20 feet (6.1 mtr.)
Hydraulic System
Max operating pressure 3200 PSI (225 kgs./cm2)
Hydraulic Oil Cooler
95 GPM fin type cooler fan drive through hydraulic motor
Pull up and Full Down
By means of Hydraulic cylinder and wire rope Reeving Ratio 1:3
Max. Pull up force
25400 lbs (11545 kgs)
Max. Pull up speed
198ft/min (60 mtr./min.)
Max. Pull down force
19050 lbs (8650 kgs.)
Max. Pull down speed
356 ft/min. (107 mtr./min)
Rotary Head
Rotary head powered by one hydraulic motor
Max. Torque
40575 inch-lbs (465kg - mtr.)
Max. Speed
0 to 150 RPM
Jacks
Four hydraulic jacks, front two are box type
Water Injection Pump
Triplex reciprocating pump of 50 LPM 1000 PSI powered by hydraulic motor
Break out Wrench
To open the drill joints hydraulic break out wrench of 350mm stroke will be provided.
Rod Handling Arrangement
Remote solenoid controlled hydraulic operated rod handling arrangement directly
to and from the rod rack fitted on either side of the platform Rod rack can hold
total of 45 Nos. of 6 mt drill pipes 4.1/2" OD which can be raised and lowered with
Hydraulic cylinder, X-Y-Z axis movement of the rod is done with hydraulic cylinder
and motor control. The rod is carried from either rack at one time and then moved
into position under the rotary head for easy coupling and decoupling. Thus reducing
burden on labour.
