دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the weight of the drill stem that is suspended from the hook.

n: The total force pulling down on the hook. This total force includes the weight of the drillstring in air, the drill collars and any ancillary equipment, reduced by any force that tends to reduce that weight. Some forces that might reduce the weight includ

the actual weight of a pipe string measured at the surface;affected by buoyancy, friction and other factors in the wellbore.