A sample is cut from a preserved core of an oil reservoir. The sample is saturat

Question

A sample is cut from a preserved core of an oil reservoir. The sample is saturated with oil and water (no gas. The water and oil in the sample were extracted using a Dean-Stark apparatus, and there was no gas produced during the extraction process. If the rock matrix is only composed of quartz and calcite, calculate the volume fraction of quartz and calcite, using the following data:

Weight of sample before extraction of oil and water = 55.15 g

Weight of sample after extraction and drying = 51.05 g

Volume of water recovered during extraction = 1.50 cc

Density of oil extracted from core = 0.85 g/cc

Density of water extracted from core = 1.00 g/cc

Bulk volume of sample = 23.60 cc

Quartz density = 2.65 g/cc

Calcite Density = 2.71 g/cc

Explanation / Answer

answer- the rock matrix that cuts from the core sample from oil reservoir. This rock saple is consist of Quartz and calcite.

given- weight of sample before extaction of oil and water- 55.16g

weight of sample after extaction oil is - 51.05g

density of core = ,mass/ volume = 51.05/ 23.60= 2.16g/cc

volume of water recovered = 0.85g/cc

density of water extracted from the core= 1.00

bulk volume of sample= 23.60cc

density of quartz = 2.65g/cc

calcite density= 2.71g/cc

so the volume fraction of quartz = mass/density = 51.05/2.65 = 19.26cc

the volume fraction of calcite = mass/ density = 51.05/ 2.71 = 18.43 cc

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