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Drilling Services
Drilling Services
 
Drilling Methods
Standard Wireline Sizes
 
 
 
 
 
 
Size
Core Diameter
Hole Diameter
 
(inches / millimeters)
 
AO-AQ-U
1.064 / 27.0
1.890 / 48.0
 
BQ-BQ-U
1.438 / 36.5
2.360 / 60.0
 
NQ-NQ-U
1.875 / 47.6
2.980 / 75.7
 
HQ
2.500 / 63.5
3.782 / 96.0
 
PQ
3.345 / 85.0
4.827 / 122.6
 
NQ-3
1.775 / 45.0
2.980 / 75.7
 
HQ-3
2.406 / 61.1
3.782 / 96.0
 
PQ-3
3.270 / 83.0
4.827 / 122.6
 
 
 
Thin Kerf Wireline Sizes
 
 
 
 
 
 
Size
Core Diameter
Hole Diameter
 
(inches / millimeters)
 
AQ-TK
1.20 / 30.5
1.890 / 48.0
 
BQ-TK
1.601 / 40.7
2.360 / 60.0
 
AGM
1.193 / 30.3
1.890 / 48.0
 
BGM
1.654 / 42.0
2.360 / 60.0
 
NGM
2.248 / 57.1
2.980 / 75.7