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A 1500-ft long horizontal and non-fractured well with 6-in. radius is completed in a 55-acre

drainage area. The formation net pay is 75 ft thick with the net to gross ratio of 0.9 and has a

porosity of 6.5%. The formation permeability values are 2 md and 15 md in vertical and horizontal

directions, respectively with the relative permeability to oil of 0.82. The oil has a viscosity of 0.55

cp and the formation volume factor is 1.22 bbl/STB. Earlier test conducted at this well resulted in

the calculation of a skin value of 0.8. The correction factor for wellbore friction is 1.0.

● Determine the Productivity Index (PI) for this well.

Fig: 1