Rotary Cum Percussion Drills Rigs
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COMBINATION RIGS.
Rotary-cum-percussion is the combination method of
percussion and rotary drill. It is not practicable to
put one drill for one operation and get another drill
for second operation. Combination drill is used so that
any drilling operations can be done depending upon the
condition of the site. These drills are used generally
for alluvial formation comprising boulder rocks.
RATED CAPACITY :
165 mm dia. Holes upto 300 mtrs. by DTH method in hard
rock and 203/215 mm dia. Holes upto 300 mtrs by mud
rotary method in alluvial soil. 406/445 mm dia. Hole
upto 60 mtrs. by mud Rotary method through reaming
operation.
PULL DOWN :
Through hydraulic cylinder and wire rope. Pull down
force variable upto 16,300 Kgs. Micro-Feed’ and
Hold-back arrangement.
PULL UP (HOISTING) :
Variable up to 13,400 Kgs. High speed hoisting provided.
ROTATION HEAD
Top drive hydraulic motor driven through gear train
immersed in oil bath providing infinitely variable
speeds of 0-100 RPM.
AIR COMPRESSOR
21 mt. 3/min at 17 kg./cm2 (750 CFM ,250 PSIG), Rotary
screw type, driven by its own separate diesel engine
MUD PUMP
‘PRECISION’ make model S-150 duplex double acting
reciprocating mud pump having `6” stroke and fitted with
5.1/2” liner capable of delivering 900 LPM and a maximum
pressure of 18 Kg/cm2
MOUNTING
6 x 4 drive Ashok Leyland `HIPPO’ Truck Chassis.
POWER UNIT
Rig including mud pump driven by truck engine
through power take off. Compressor driven by independent
diesel engine.
MAST
Heavy duty structural steel construction electrically
welded capable of handling 6.1 mtrs. (20’) long drill
rods. Mast raised and lowered by hydraulic cylinder.
HYDRAULIC SYSTEM
Comprising of hydraulic pumps, control valves,
reservoir, etc. Total oil displacement around 350 LPM at
a pressure of 180 – 210 Kg/cm2
LEVELING JACKS
4 Nos. Hydraulic leveling jacks with safety check
valves provided.
AIR LINE LUBRICATOR
13.5 Ltrs. Capacity provided.
WATER/FOAM INJECTION SYSTEM
Reciprocating water injection pump provided.
AUXILIARY WINCH/ & JIB BOOM
3000 Kgs. Capacity hydraulic motor driven Auxiliary
winch provided. A hydraulically adjustable jib boom
swiveling over 450 mounted on the top of the mast.
ROD CHANGER
Hydraulically operated automatic indexing carousel
for carrying 7 Nos. rods of 4.1/2” OD x 20’ length
provided.
ROD RACK
Rod Rack arrangement provided along the side of the
mast to carry 8 Nos. drill rods.
SHOCK ABSORBER SYSTEM
Shock absorber sub provided along with the rotation
head to prevent damage due to shock loads.
DRILL ROD (RECOMMENDED )
114 mm OD x 6.1 mtrs. (4.1/2” OD x 20’) external
flush type drill rods with tool joints as per API
standards.
OPTIONAL
Mounting on two truck concept.
Choice of Compressors
Casing hammer attachment or ODEX system for simultaneous
casing lowering. |
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