Question: Permeability 1. Prove that permeability unit (Darcy) has the unit of Area (L?)? 2. What is the relation between the porosity and permeability? 3. Prove:

Permeability 1. Prove that permeability unit (Darcy) has the unit of Area (L?)? 2. What is the relation between the porosity and permeability? 3. Prove: KAPP Q. 2ul Pb Where Quis flow rate of gas measured at atmospheric pressure (Pb). 4. (a) Calculate the permeability of a core sample to a liquid using the following information: q0.0143 ce/sec, u =0.685 cp, L = 2.43 cm. A = 2.66 cm", AP- 144.7 cm distilled water (b) Calculate the permeability of the same core sample to air using the following information: 4 -7.184 cc/sec, -0.0184 cp. Pan-Po - 72.95 cm Hg, AP -73.4 cm Hg. 5. Using Table 4.1 below (from your course textbook), plot porosity versus permeability using excel. Using the plot, is there any correlation between porosity and permeability as a whole and as an individual field? Try to explain what the plot shows. TABLE 4.1 Porosity and permeability Data of Some Sandstone and Carbonate Formations in the World Field/Formation Type of Rock Porosity (%) Permeability (m) Prudhoe Bay, United States Sandstone 265 Ghawa (Ain Dar), Saudi Arabia Carbonate 19 617 Bombay High, India Curbonate 15-20 100-250 Ford Geraldine Unit, United States Sandstone 23 64 Ek Hills, United States Sandstone 27-15 100-2000 Pillai Field, Malaysia Sandstop 18-31 300-3000 Chicotepec, Mexico Sandstone 5-25 01900 Ekotuk, Norway Carbonate 3048 0.25 Upper and Lower Cretaceous, Denmark Carbonate 15.45 0,01-10 Daging (Lamadiun. China Sandstone 246-26.4 200-1300 Hai Messaoud, Algeria Sandstone 2.5 Ratio of vertical to horisontal permeability that 74

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