How Oil are Drilled? - Drilling Documentary - DOCS CHANNEL Drilling is a reducing procedure that utilizes a drill little bit to destroy or enlarge a gap of round cross-section in solid products. The drill bit is a rotary destroying device, typically multipoint. The little bit is pressed against the work surface and rotated at prices from hundreds to hundreds of transformations each minute. This compels the cutting side against the workpiece, cutting off chips (swarf) from the hole as it is pie