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Using the grain volume calculated for each core, the porosity <br />is found by; <br />P.V B.V - G.V <br />~ _ _ <br />B.V B.V <br />(See core cutting work sheet). <br />Porosity from the Hg and Beckman pycnometer. <br />Hg pycnometer - used Hg displacement to determine the B.V of a <br />3 <br />core - measures cm . <br />Beckman pycnometer - uses air displacement to determine <br />absolute or effective grain volume. <br />The B.V and G.V is measured for each core and ~ is calculated. <br />B.V Hg Pycno. - G.V Beckman <br />• ~ B.V Hg Pycno. <br />(See porosity work sheet). <br />Cores are next saturated with water using a vacuum pump system. <br />Approximately 22 inches of Hg Head is placed on vacuum over the <br />cores for one hour. H2O is allowed to trickle over the cores <br />after the pump is shut off. This sucks the air from the pores <br />and allows H2O to enter. Four cores are saturated with H2O. <br />Similar process is followed for saturating cores with Kerosene. <br />Two cores are saturated with Kerosene. <br />\J <br />7 <br />