Drilling Equipment

Vaishno Drill Bit

Bit Maintenance

Carbide inserts should be ground when the buttons exhibits, flats equal to 1/3rd diameter of the insert.

As the wear of the carbide increases, the rate of penetration goes down. Bit performs best when the carbide insrts [buttons] are in their original shaprs. Worn bits have a direct effect on drilling productivity and drilling cost. Grinding can Certainly improve drilling results and reduce overall related costs by both extending bit life and providing optimum performance.

Carbide [buttons] are resistant to wear and abrasion, they do indeed develop signs of wear. The is most associated with drilling in hard and abrasive rock conditions. As this "flat" area becomes large the effective cutting action is reduced. if not corrected this situation can develop into large problems including carbide "breakage" or "shearing. Grinding at regular intervals assures of maximium bit performance.

Vaishno Jet Drill Hammers

General Care

Before Shutting down at the end of each shift, we recomment the following procedures:

1. Flush Hammer with air/water for a few minutes, then turn off water injection.
2. Flush Hammer with air/oil for a few minutes. This will coat the internal Hammer parts preventing corrosion/rust.
3. Never leave the tool in a wet/muddy hole. Pull back from bottom as far as necessary to prevent the Hammer sitting underwater.
4. It is also good practice to pour at leat half a litre of oil down the drill at start up of a new shift.
5. If the Hammer is removed from the drill rig for any reason. it is wise to pour a quantity of oil into it and block both ends. providing the flushing as outlined in steps one and two above have been carried out. If steps one and two have not been carried out the Hammer should be stripped. cleaned and oiled before being stored.

Special Features

• For use in hard rock application
• Valve less DTH Hammer design
• Reversible wear sleeve [Cylinder]
• Optimum rate of penetration
• Excellent under water characteristics
• Less number of moving parts
• Latest in design to suit wide range of hole sizes & pressure ratings

Vaishno Drill Rigs

VPL Series Hydraulic Powered Drill Rigs are specilly designed for cost effective drilling by using down the hole hammers & bits. Hydraulic System Powered by Carrier Engine is operated by fixed displacement pump which controls Top Head Drive speed & feed. Centralised control panel located close to the drilling position ensures easy operation. VPL latest technology Rigs are low in maintenance & high in productivity.

• Hydraulic Pump package driven by carrier engine at low constant RPM ensures longer life span of pumps. gear box and power take off system.
• Fast Feed & Rotation System ensures faster retrieving of drill tubes. Variable rotation and feed combination, helps drilling/retrieving in difficult strata conditions.
• Rotary cum D.T.H. models can be used with a Mud Pump and Rotary drilling accessories for mud drilling.
• System design incorporated is latest in technology and requires very less maintenance expenditure.
• Built to last long keeping customer and operator requirements in mind.
• Powerful water & foam Injection Pump, driven by high toque hydraulic motor, installed to work with high pressure compressed air
• Larger Centraliser table with front half swingout facility accomodates larger diameter casing pipes.
• Drill Module Constrution & Mounting made simple & easy for service maintenance and accessibility.