دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

sym: joule.

productivity index.

abbr: productivity index.

the productivity Index, usually measured in bbl/day/psi of drawdown.

n: see productivity index curve.

n: (PI) a well-test measurement indicative of the amount of oil or gas a well is capable of producing. It may be expressed as PI=q+(Ps-Pf) where.-- PI = productivity index (barrels/day or thousand cubic feet/day per pounds per square inch of pressure differential) q = rate of production (barrels/day or thousand cubic feet/day) Ps = static bottomhole pressure (pounds per square inch) P f = flowing bottomhole pressure (pounds per square inch).

a comparison of the productivity of a completion to the productivity of an ideal, undamaged open hole. Labeled PI or J.

n: (PI) the curve on a graph that results when the volume of a wells production is plotted against time. The curve is used to evaluate a wells perfonnance when it has single-phase flow.