Assignment 2 Solution

We assume wellbore storage afterflow is negligible

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Unformatted text preview: storage (afterflow) is negligible. Log-lin paper is provided at the end. Other test information: Viscosity: 1 cp Total compressibility: 2.2*10-5psi-1 Formation volume factor: 1.3 rb/stb Porosity: 0.25 Formation thickness: 20 ft Wellbore radius: 0.30 ft a) We compute , and plot wellbore pressure vs. . closed-in time (t+Δ t)/Δt t(hours) 1 5 10 15 20 25 close-in pressure Pw(psi) 41.0 1660 9.0 1809 5.0 1860 3.7 1887 3.0 1905 2.6 1917 ENGI 8691/9110 Assignment 2 Solution Spring 2012 Horner plot 2200 2100 2000 1900 Pw(psia) 1800 1700 1600 1500 1400 1300 1200 1100 1000 1.0 10.0 100.0 (t+Δt)/t...
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This note was uploaded on 02/07/2014 for the course ENG 8691 taught by Professor Drjohanssen during the Spring '12 term at Memorial University.

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