You want to analyze a core sample containing oil, water and gas. Bulk volume of

Question

You want to analyze a core sample containing oil, water and gas. Bulk volume of sample was 95 Cm^3 and its initial weight was 216.7 gin. Sample was evacuated and gas space was saturated with water (pw = 1 g/cm^3) and now sample weight is 219.7 gin. The water in the sample was then removed and collected. Volume of water removed was 13.0 cm^3. The oil was extracted and the sample was dried and its dry weight was 199.5 gm. Calculate: 1. Porosity 2. Water saturation 3. Oil saturation assuming 35 degree API 4. Gas saturation S. Matrix density and lithology 6. If the area is 2000 acres and thickness is 350 ft, find OOIP and IGIP

Explanation / Answer

The calculations are shown for porosity below.

porosity = 13/199.5x100 = 13.68%

matrix density = 199.5/95 = 2.1g/cm3

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