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# Answer to Question #260298 in Chemical Engineering for Leke

Question #260298

A well flowing 40%water(viscosity=0.5cP, and FVF=1) and 60% oil(viscosity=4cP and FVF=1.5 from 30-ft thick reservoir. Core analysis indicate the permeability to be 305md. Estimate the productivity index of this well. Assume relative permeability to 0.25 for oil 0.15 for water.

1
2021-11-05T02:24:02-0400

The productivity index is a measure of the well potential or ability to produce and is a commonly measured well property.

A labor productivity index can be calculated by dividing an index of output by an index of hours worked. When more than one index is included in a calculation, all the indexes must have the same base period.

"P.I = 100 \u00d7 \\dfrac{\\textsf{present productivity}}{\\textsf{base productivity}}"

"= 100 \u00d70.15\/0.25 = 60"

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