# HW3s - PGE 424 Home Work 3 Due March 6 1 Attached is the...

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PGE 424 Home Work 3 Due: March 6 1. Attached is the mercury capillary pressure data in the spreadsheet HW3. The cos for mercury/air is 372 dyne/cm. Calculate the cumulative pore throat size distribution, assuming a bundle of tubes model. Answer: Pc = 2 cos /r . Therefore r = 2 cos /Pc. In the spreadsheet, calculate a radius for each capillary pressure value using cos =372 dyne/cm. Radius (micron) = (2x372x10000)/ (Pc in psi x 68947.5 dyne/cm2/psi) The saturation given in the spreadsheet is Snw. Sw = 1-Snw. Cumulative pore size distribution, Cv = Sw = fraction of pores smaller than radius r. Plot r vs. Cv, as shown below. Hg Porosimetry 0.000 0.100 0.200 0.300 0.400 0.500 0.600 0.700 0.800 0.900 1.000 0.01 0.1 1 10 Throat Radius (micron) Cumulative Fraction Cum. Frac.

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2. Consider an oil reservoir of the porous medium studied in the last problem. The cos for oil/water is 24 dyne/cm. Assume the rock to be water-wet. Find the initial oil saturation in the reservoir at 5m, 10 m, 20 m, 30 m, 40 m, and 50 m above the water/oil contact. Oil density is 0.7 gm/ml and water density is 0.9
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HW3s - PGE 424 Home Work 3 Due March 6 1 Attached is the...

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