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is initially filled with water. Estimate the sample's pore-volume compressibility at 1000 and 2000-psi net overburden pressures. Pp (psi) 14.7 50 50 100 100 500 500 1000 Pob (psi) 500 750 1000 1500 2000 2500 3000 3500 Vwp (cm³) 0.222 0.328 0.361 0.452 0.470 0.481 0.487 0.494 Vwp is total water squeezed out of sample at each step. Solve using these equations if possible : ob, net Cp = Cf= Pob - 0.85 Pp 1 ΔΦ Φ ΔΡob,net 1 (lab-Pres) Plab (Plab-Pres) obinet obinet 1000 4000 0.506

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