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  Helium Porosimeter at Confining Pressure

  Normally, the porosity of the cores is measured without applying confining pressure on the samples. Although the confining pressure is not able to significantly affect the porosity value, it may lead to a huge deviation on the estimated value of the original oil in place. This device measures the porosity of the core samples while under confining pressure. This equipment can be used for grain density measurement at net confining stress. Moreover, Porosity is usually expressed as a percentage of the core plugs’ total volume.

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  Helium Porosimeter

  The Helium gas Porosimeter determines the sample’s (1 inch or 1.5-inch diameter) grain and pore volume via an isothermal helium expansion and works based on Boyle’s and Charles’ law. Porosity is usually expressed as a percentage of the core plug’s total volume. The device tolerates an injection pressure of up to 10 bar (higher pressure is available upon request). Each sample matrix cup is interchangeable and is provided with stainless steel billets for calibration.

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  Saturator and Gravimetric Porosimeter

  Several methods have been developed to measure the porosity and pore volume of a sample. One method is called the fluid renaturation method. In this method, a clean and dried sample is weighted, saturated with a liquid of known density in a desiccator, and then reweighed. The weight change divided by the density of the fluid result in the pore volume.

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