Definitions for "Rotary drilling"
Keywords:  drill, hydraulic, rotate, pipe, bit
A method of well-drilling that employs a rotating bit and drilling mud to cut through rock formations.
Making a hole in the earth by rotating an entire drill string into the earth; the tip of the drill string may be any kind of drilling bit.
a drilling method in which a hole is drilled by a rotating bit to which a downward force is applied. The bit is fastened to and rotated by the drill stem, which also provides a passageway through which the drilling fluid is circulated. Additional joints of drill pipe are added as drilling progresses.