In drilling operations, many contractors focus only on equipment cost. However, experienced drilling companies understand one important principle:
Slow drilling is the most expensive drilling.
Drilling speed, also known as penetration rate, has a direct impact on project profitability.
Increasing drilling speed even slightly can significantly reduce total project costs.
To understand the overall strategy of controlling drilling expenses, you can also read:
How to Reduce Drilling Cost →
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1. Drilling Speed Determines Cost per Meter
Most drilling contracts are calculated based on cost per meter drilled.
If drilling speed increases:
- labor costs decrease
- fuel consumption per meter decreases
- equipment operating time decreases
For example:
Drilling speed 8 meters/hour
Total project time increases significantly.
Drilling speed 14 meters/hour
The project can be completed much faster.
This difference can reduce overall drilling costs by 15–30%.
2. Air Pressure and Airflow
For DTH drilling, compressed air is the main power source driving the hammer.
Higher pressure and sufficient airflow allow the hammer to operate more efficiently.
If the compressor cannot provide enough air volume, drilling speed will drop significantly.
3. DTH Hammer and Bit Design
The hammer and drill bit directly affect rock-breaking efficiency.
Modern DTH tools are designed to:
improve impact energy
reduce energy loss
increase drilling stability
Proper tool selection can greatly improve penetration rate.
4. Rig Stability and Hydraulic System
A stable drilling rig provides better energy transfer to the drill string.
Advanced hydraulic systems help maintain consistent feed force and rotation speed, improving drilling efficiency.
5. Operator Experience
Even with advanced equipment, operator skill still matters.
Experienced operators know how to adjust:
- feed pressure
- rotation speed
- air pressure
These adjustments can significantly improve drilling performance.
Drilling speed is one of the most important factors affecting drilling costs.
By improving penetration rate through better equipment, optimized air compressor systems, and experienced operators, contractors can reduce project costs and increase profitability.
To understand how drilling equipment selection affects overall project cost, you can also read:
