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.
A hydraulic process whereby a column of drill pipe is rotated, with a rotary drilling bit attached to the bottom of the pipe.
Method of drilling in which the drill pipe is rotated to rotate a bit.
the method of drilling oil and gas wells in which the entire drill string is rotated from the surface to turn the drill bit, and cuttings are removed from the hole by a circulating fluid.
a system whereby a bit is forced against a rock face and mechanically rotated to penetrate the various formations.
A common hydraulic well-drilling method which uses a rotating drill pipe with a hard-tooled drill bit attached at the bottom.