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• <br /> <br />• <br />The pore volume can be found by determining the grain volume of <br />each core. <br />The grain volume is found by measuring the density of the <br />solids in the core. <br />Density of the sandstone matrix is found using the Beckman <br />pycnometer (this uses air displacement to calculate grain <br />volume) tar reading = +.4 cm3 (zero instrument). <br />7.80 <br />G.V of core = 8.05 8.02 - .4 = 7.62 cm3 <br />8.20 <br />8.05 <br />G.V of crushed core = 8.04 8.04 - .4 = 7.64 cm3 <br />8.06 <br />Weigh[ of core 21.27 gm <br />Weight of crushed core 21.27 gm <br />21.27 gm <br />Thus, matrix = 2.78 gm/cm3 <br />7.64 cm3 <br />Grain Volume = <br />Weight of core <br />Weight of Core <br />matrix <br />2.78 gm/cm3 <br />6 <br />