Truck Mounted DTH cum Rotary Drilling Rigs (India)

Technical Specifications

General



KLR DTHR300 Model. Top drive DTH cum Rotary Combination Hydraulically Operated Truck Mounted Drilling Rig, Designed to handle DTH Drilling and Rotary drilling upto a maximum depth of 300 meters.



Capacity



DTH Drilling

Drilling hole Diameter

203 mm

8 Inches



Max. Overburden Drilling Diameter

254 mm

10 Inches



Max. Drilling Depth

300 Mtr

1000 feet



Drill Pipe size

114 mm

4.5 Inches



Drill Pipe wall thickness

8.9 mm

0.35 Inches



Length of the Drill Pipe

6.1 Mtr

20 feet









Note: Under favorable Drilling conditions.



Rotary Drilling

Drilling Diameter

311 mm

12 ¼ Inches



Max. Casing Pipes Capacity

203 mm

8.0 Inches



Max. Drilling Depth

300 m

1000 feet









Note: Under favorable Drilling conditions.



Mast



Box type Mast of Electrically welded construction, main members made out of heavy duty structural steel tubes, reinforced with suitable cross members.



Mast Length

8800 mm

29 Feet



Rotary Head Travel

7000 mm

23 Feet



Centraliser Opening

355 mm

14 Inches



Rod handling Capacity

6.1 m

20 Feet



Raising & Lowering

With Hydraulic Cylinder









Rotary Head



Heavy duty Hydraulically Driven Top Head Rotation Unit having infinitely variable speed (0 to 100 rpm) will be provided. This Unit travels on the Mast and is sturdy construction to absorb sudden shock loads generally encountered during Drilling Operations.



Max. Speed

100 rpm



Max. Torque

550 kgfm



Drive Motor model

Orbital Motor (0MV 400 or equivalent)



No. of Motors

2 Nos.









Feed System



Feed system is provided with adequate travel for handling drill pipes & Casing pipes upto 6 Mt. Long. The feed and hoist are actuated by a suitable hydraulic cylinder with wire rope and pulley arrangement. The feed system has the following capabilities.



Pull back/Up Capacity

14500 Kgf



Pull down Capacity

7500 Kgf



Pull Back/Up Speed

20 Mtr/mm



No. of Cylinders

1 No.



Reeving Ratio

1:3









The feed system will be incorporated with Hold back arrangement to control and limit weight on bit, rapid and slow feed arrangement to suit the variable ground conditions.



Hydraulic System



Max. Operating Pressure

220 kg/cm2



Hydraulic Tank Capacity

800 Lt



Filtration (Nom) Return Line

10 microns



Hydraulic Oil Cooler

120 GPM (Fin type Oil to Air)









Prime Mover



The entire rig unit including mud pump shall be mounted on the truck, power drawn from the deck engine with suitable PTO arrangement for the Hydraulic system.



Stabilizers (Jacks)



System consists of four hydraulic leveling jacks with Reverse flow restricted valves to ensure safe operation. Two numbers are at rear of the rig controlled by a single valve. and two separate valves for the Two jacks at the front of the rig. (Operator side)



Water Injection Pump



The drill rig will be provided with Hydraulically operated triplex plunger pump, for injecting water/foam with necessary piping and flow control valve.



Max. Flow

36 lpm



Max. Pressure

40 kg/cm2









Breakout Wrench



The Drill Rig is equipped with Hydraulically operated breakout wrench for breaking drill pipes. Cylinder bore diameter

80 mm

3.1 Inch



Stroke

300 mm

12 Inch









Mud Pump



Hydraulically driven Duplex, double acting reciprocating 6 x 6 model Mud pump is required for rotary drilling. This mud pump is suitable for handling clear water, drilling mud and bentonite solutions.



Bore

150 mm

6 Inches



Stroke

150 mm

6 Inches



Max. Flow

1021 lpm





Max. Pressure

20.74 kg/cm2



Single Rod Changer with One Ton Winch Assly (Optional)



Manually operated single rod changer will be provided for changing the drill pipes. Hydraulically operated auxiliary winch of capac