QUICK DICTIONARY :
RPM: Rotation of the bit (Round Per Minute)
WOB: Weight On Bit (kN)
ROP: Rate Of Penetration (cm)
FLOW: Water flow (Liter Per Minute)
RPC: The ratio of RPM/ROP (Revolution Per Centimeter)
WOB: Weight On Bit (kN)
ROP: Rate Of Penetration (cm)
FLOW: Water flow (Liter Per Minute)
RPC: The ratio of RPM/ROP (Revolution Per Centimeter)
All values bellow are indicative and we are doing our best to produce versatile tools that give the best meters output at cheapest running cost. A professional diamond driller will adjust all these parameters matching the drilling condition.
GLOBAL OPERATING PARAMETERS
ROTATION
Rotation speed should be adjusted considering. RPM too high with low ROP can cause polishing of the bit. RPM too low may result in faster wear of the bit
WATER FLOW
Fluid flow very imporatant different functons
ROP
The rate of penetration is the key parameter during drilling. It results from the right combination of WOB and RPM for a rock type and condition.
Well ‐maintained ROP ensures :
# best cost per meter
# best bit life
# smooth operation
# sharp bit
# best cost per meter
# best bit life
# smooth operation
# sharp bit
WOB
The weight on bit depends on rock and bit type, RPM, ROP and water. Try to maintain a constant ROP by increasing or reducing the WOB. Always adjust the hold back pressure while adding rods
# best cost per meter
# best bit life
# smooth operation
# sharp bit
# best cost per meter
# best bit life
# smooth operation
# sharp bit
RPC
Revolution Per Centimeter is an indicator coming from the division RPM / ROP. Example of an NWL bit turning @1200 rpm
and run @15 cm/min RPC = 1200 / 15 = 80 Maintain the RPC within 50 < RPC < 100
SHARPENING TECHNIQUES
# Add WOB until torque rises, once ROP increases, reduce WOB to maintain desired ROP.
# Reduce RPM by half, wait until torque and ROP rise. Reduce speed to noormal operation.
# Reduce the water
# Reduce RPM by half, wait until torque and ROP rise. Reduce speed to noormal operation.
# Reduce the water