rotary drill
Revolving hole maker
A rotary drill is a drilling tool that cuts by spinning rather than hammering.
The term covers everything from handheld power drills to massive oil rigs that bore into the earth.
In petroleum extraction, rotary drilling replaced the older cable-tool method and remains the standard technique: The rotary drill reached the oil deposit at three thousand feet.
- bitSmall amount or portion
- boreTiresome individual or drill
- rigEquipment arrangement or vehicle
- petroleumNatural underground hydrocarbon liquid
- oil wellPetroleum extraction site
black gold · wellhead · chuck · torque · spinning · mud · derrick · casing · downhole · oilfield · spiral · carbide · twist · horsepower · penetrate · shaft · geology · roughneck
rotary drillpercussion drill
Tool combining rotation with impact
hammer drill · impact drill · pile driver · jackhammer · chisel
rotary, drill, rotate, rotation, rotational, rotating, rotator, rotunda, rota