The volumetric method of reservoir is a very simple and yet elegant mathematical tool that gives a fairly accurate idea about the volume of hydrocarbons in the reservoir. Its accuracy depends upon a correct estimation of certain physical properties of the reservoir viz. Porosity , Reservoir thickness .

Where , V is the volume of the hydrocarbon in reservoir

A is the area over which the reservoir is spread

h is the thickness of the reservoir

phi is the reservoir porosity

Swc is the connate water saturation

Bo is the formation volume factor

In the simplest mathematical terms , the volume is determined as

Where , V is the volume of the hydrocarbon in reservoir

A is the area over which the reservoir is spread

h is the thickness of the reservoir

phi is the reservoir porosity

Swc is the connate water saturation

Bo is the formation volume factor

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Petroleum reservoir engineering|Petroleum training