دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n pi: the basis for payment on drilling contracts when footage rates are suspended (as when the drilling rig is used in taking extra cores. logging. or other activities that delay actual drilling) or when the contract daywork rates. In effect, daywork rates pay the drilling contractor by the hour rather than by the foot.

n: See day rate charge.