دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the employee directly in charge of a drilling or workover rig and crew. The drillers main duty is operation of the drilling and hoisting equipment, but this person is also responsible for downhole condition of the well, operation of downhole tools, and pipe measurements.

n: The employee of the drilling contractor who is in charge of the drilling rig and crew. His main duties are to operate the drilling equipment and direct rig-floor activities.