volumetric method calculations - Applied Res...

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Applied Res. Engineering (PE-453), Fall -2007. Dr. S. El-Usta Reservoir Pore-Volume Calculations: 1- Iso-Pach (net-pay thickness) Method: The net pay thickness map of the reservoir is prepared by placing the value of net pay thickness for each well on the location map. Then drawing the contours on the map. Calculate the areas in (feet 2 ) enclosed by each contour using a graph paper, or the proper software. Calculate V b (ft 3 ) using Pyramid rule, or Trapezoidal rule. Calculate average porosity of the reservoir and the average initial water saturation of the reservoir. Calculate the volume of the Oil Initial In Place using the following equation: oi wi b B 5.615 ) S (1 φ V OIIP(STB) Where Boi = formation volume factor at initial reservoir pressure(Pi.)
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Applied Res. Engineering (PE-453), Fall -2007. Dr. S. El-Usta 2- The Hydrocarbon Pore Volume (HPV), Method: Calculate the net pay thickness, the average porosity, the average water
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