DR 1500

ROTARY DRILLS They are meant for drilling in alluvial and semi-consolidated formations and for virgin areas in connection with exploration program, by using drilling mud fluid.

 

   
RATED CAPACITY
 
8” [203mm] holes upto 1500 Ft [457Mts] directly using 2.7/8” [73mm] OD Drill Pipes.
8” [203mm] – 10” [254mm] holes upto 1500 Ft [457mts] directly using 3.1/2” [88.9mm] OD Drill pipes.
Larger size holes for various depths by reaming.
 
CASING LOAD
 
26400 lbs [12000 Kgs.] by using Single sheave Traveling Block
4400 lbs  [20000 Kgs.] by using Double sheave Traveling Block.
 
MAST
 
Heavy Duty Tubular Steel Construction Electric welded
42 Ft [12.8 mts] high above Ground Level during drilling
70000 lbs [31818 Kgs] Gross Load capacity
5 Sheaves + 1 catline sheave
Raised and lowered by two hydraulic cylinders with safety check valves.
 
DRILL HEAD
 
Rotary Type as integral unit with Draw works and Hydraulic pull down.  
Opening – 3” [76.2 mm] / 3.1/2” [88.9 mm] /4.1/2” [114.3 mm)
Hydraulic Retraction – 21” [533.4mm]
Disc, Type Friction Clutch.  
 
CAT HEAD
 
Shaft mounted provided on the right side of the drill head.
 
PULL DOWN
 
16,000 lbs [7272 Kgs] pull down through twin hydraulic cylinders having 30” [762mm] stroke.
 
DRAW WORKS
 
Hoisting and sand reel drum having bare drum single line pull of 15000 lbs [6818 Kgs] each.
Barrel dia x length each drum – 7” [178mm] x 10.3/8” [263.5mm]
High leverage Mechanical type Brakes, Single/Double on drums
Chain Driven with multiple Disc Friction clutch.
 
MUD PUMP
 
`PRECISION’ Model ‘S-200’ 8” [203mm] x 6” [152mm] or `S –150’ 6” (152mm) x 5 1/2 (139.7mm) positive displacement Duplex Double action Mud pump with interchangeable liners as per operational requirements having wider choice of discharge/pressure. ‘V’ Belts/Chain Drive
 
HYDRAULIC SYSTEM
 

21 US GPM [80 LPM] 1000 PSI [70Kg/cm2] – Fixed displacement vane type pump.

 
MOUNTING & PRIME MOVER
 

Truck / Trailer

Powered by Truck Engine and/or suitable independent Engine(s)
 
TRANSMISSION
 
5 Forward and 1 Reverses
 
KELLY
 

3.3/8” [85.7mm] OD x 28 ft [8.53 mts] long 3 fluted round Kelly.

 
LIGHTING
 

Truck Battery/Dynamo /Alternator

 
LEVELING JACKS
 

4 Nos. Mechanical or Hydraulic

 
CONTROL
 

Conveniently located for ease of operation.

 
OPTIONAL
 

Longer Mast

Choice of Mud Pumps
Choice of Hydraulic pumps
41/8” (104.77mm) OD Kelly
Hydraulic Breakout System
Air clutches
Diesel generating set for lighting
DTH attachments for drilling by DTH method
Casing drum
Hydraulic leveling jacks
Chain pull down having stroke length of 20 feet.