Hole making methods

Hole making methods

Drilling method

Hammering

Downhole hammer drilling
Top hole hammer drilling
Cable-tool drilling

Cutting
Tearing
Shearing

Air and mud rotary drilling
(including using downhole motor)
using blade, PDC, or roller blade bits
Core drilling using diamond, PDC, or
tungsten set bits
Push probing
Auger
Some types of cable-tool drilling

Crushing

Air and mud rotary drilling using
tungsten button bits
Raise boring

Grinding or abrading

Core drilling using diamond
impregnated bits

Eroding or sluicing

Jetting
Horizontal directional drilling using
jetting bits

Liquefaction

Sonic drilling
Vibracoring