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MTM Rigs

MODEL JCR MTM-150meters MINI TRUCK MOUNTED DRILL RIG TECHNICAL SPECIFICATION.
DESCRIPTION
JCR MTM-500 DTHR combination Drill Rig mounted on Tata Truck 407 (4 X 4 wheel drive) with top head drive, hydraulics driven by tractor engine is capable of drilling 150mtrs.
CAPACITY
The rig is capable of drilling 175Mtrs dia bore by over burden drilling to a depth of 20 to 25 mtrs in soft/unconsolidated formation, and 125/115 mm bore to depth of 90 mtrs and 150 mm dia bore to a depth of 75 mtrs by DTH method in hard rock and abrasive formation.
DIRECT ROTARY DRILLING
350mm dia hole by mud rotary (Direct Rotary) method by reaming in alluvial /sandy, soft medium and collapsible formation upto 60-75 mtrs.Depth.
Note: Above drilling capacities are possible under favourable drilling conditions only.
MAST
The mast is made of heavy duty welded, construction reinforced with suitable cross members (plates) confirming to IS standard so that it is strong enough to with stand the high drilling loads.
The Mast is capable of handling 3 mtrs (10 feet) long drill pipe and 3 mtrs long casing pipe. The rig will be provided with level indicators for proper leveling. The mast is raised and lowered by means of suitable capacity hydraulic cylinders. The mast is equipped with sufficient arrangements during night drilling. The lifting of drill rods is provided hydraulically lifting arrangements.
TOP HEAD ROTARY HEAD
Hydraulically operated top drive rotary head having variable speed range of 0-100 rpm and capable of giving a torque of about 340 Kg/M. The rotary head is swing out and hydraulically operated sliding arrangements to enable easy handling.
MUD SWIVEL
A separate air/mud swivel is provided to prevent the accidental entry of air/mud in rotary head.
FEED SYSTEM
Heavy duty, strength, single hydraulic cylinder is provided to accommodate 3Mtrs (ID) long drill pipes and to handle 3Mtrs casing pipes. The pull back is of 6620 kg and the pull down capacity will be 4100 kg. The feed system incorporate having arrangement to control and limit weight on the drilling bit. Rapid and slow feed speed arrangement is provided with suitable regulating valve and pressure gauge. Pressure gauges is provided measure the down feed and hold back pressure of the system.

The pull back/up speed is
High Speed up
High Speed down
Slow feed rate up
Slow feed rate down
30Mtrs/ Min.
50Mtrs/Min.
5Mtrs/Min.
9Mtrs/Min.

HYDRAULIC SYSTEM
An efficiently designed hydraulic system is provided to operate rotation, feed, jacks mast raising cylinders, break out wrenches, water/foam injection pump. The system is operated with Tractor Engine. The system incorporates full release filtration, in tank return and suction filters and an efficient oil system to obtain long hydraulic system.
The hydraulic system includes hydraulic Oil Cooler suitable for 50 degree Centigrade ambient, high pressure hydraulic hoses, control valves, gauges etc. for efficient operations. A Hydraulic system of adequate capacity is to be provided at a conventional location and it is always remain under go to prevent entry of dust particles. Gear type pump is provided.
Function
Stage 1: Rotation 100rpm/front feed.
Stage 2: Slow Rotation
Stage 3: Slow Feed/Low speed Hoist
Stage 4: Derrick hoisting cylinder, Break out, wrench Jacks, Water injection pump, Hydraulic oil coolers, Winch.
STABILIZERS (JACKS)
Hydraulically operated leveling jacks 610mm (stroke) 4 numbers is provided with suitable leveling arrangement and double lock check valves (locking device) and is operated console for fast and accurate leveling.
BREAK OUT SYSTEM
Break out Wrench: Hydraulic break out wrench cylinder is provided with provision of opening drill pipe, hammer, button bits etc on the centraliser drill table using appropriate wrenches/tools. Stroke about 350mm Torque 200kg/M (approximately).
SWING OUT CENTRALOSER TABLE
The working table/centraliser is having a minimum table opening of 400mm. The centraliser table has to be set above the tractor chassis to prevent the drill cuttings falling back into the hole.
DUST CURTAIN
A rubberized curtain (dust curtain) is provided to protect the operators from falling of stone cuttings or splashing of water during drilling or blowing.
AUX WINCH
The mast is equipped with the hydraulically operated winch having jib boom for handling of drill pipes, hammers, and heavy tools. The rated capacity of the hydraulic hoist is 1000 kg with built in brakes and is provided with suitable sized cable of necessary length. The winch is operated simultaneously when drilling is carried out for handling drill pipes etc.
ROD CHANGING DEVICE (OPTIONAL)
A rod changing mechanism for fast makeup and brake out of drill string is provided.
AIR LINE LUBRICATOR
A inline oiler of adequate capacity and suitable for working pressure up to 250 PSI is provided for injecting oil in all compressed air stream complete with oil reservoir volume control is provided.
CONTROL PANEL
Centraliser control panel is located at a convenient place on the drill to enable the driller for efficient control of the operation. All levers, valves and gauges are conveniently grouped. The control for setting up of the rig is grouped in such a way to prevent accidental operation while drilling. A locable steel cover (control panel cover) is provided for the control panes to protect gauges and controls during transportation. Gauges will include rotation, pull down, hold back/air pressure and emergency shut down switch for the engine will be provided.
MUD PUMP
Diesel Engine driven 4” x 4” progressive cavity screw pump of capacity about 300-500LPM at 10Kg/sq.cm
LIGHTING SYSTEM
The electrical system of the rig is 12/24 V system powered by generator and batteries of the rig engine. The system is provide panel and instrument illuminating light and minimum three spot lights is directed towards the mast and rotation.
DRILLERS AND OPERATORS PLATFORM
A suitable folding working platform (full length) is provided for the operator and the helper.
DRILL PIPE RACK
Suitable arrangement is made to carry the drill rods on both the sides of the truck space available.
TOOLS BOX
A suitable tools box with necessary tools generally required for drilling is provided.
COMPRESSOR
Screw Compressor of 450cfm /150 PSI, for shallow depths, 650cfm/200PSI 152mm dia bore will drill to a depth of 150mtrs.
 
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