# HW11 - PGE 312 FALL 2003 Physical and Chemical Behavior of...

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PGE 312 - FALL 2003 Physical and Chemical Behavior of Petroleum Fluids Homework 11- Key 1/2 Produced oil at the bubble point To determine the amount of oil produced up to the bubble point, use the followin equation: This equation models the behavior of an oil reservoir without gas cap or water drive above the bubble point Reservoir Properties Initial Pressure 4000 psi-1 Connate water saturation 0.15 Pore-Volume Compressibility 5.00E-06 psi-1 Connate water compressibility 4.00E-06 psi-1 Boi 1.440 rb/STB Bob 1.474 rb/STB Rsi 768 scf/STB Bubble Point Pressure 2620 psi OOIP (Volumetric estimate) 5.00E+08 STB 15,974,268 STB Let's assess the influence of the compressibilities terms on the Material Balance equation. Let's Neglect this terms to get the following simplified version of the Material Balance equation 11,533,243 STB We get a difference of 27.80% less oil produced with the simplified version of the equation , therefore, above the bubble point pressure the compressibilities terms are important and cannot be neglected . Below the bubble point the compressiblites of fluid and rock are not that important. In your spare time, try to perform several calculations below

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## This note was uploaded on 01/28/2011 for the course PGE 312 taught by Professor Peters during the Spring '08 term at University of Texas.

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HW11 - PGE 312 FALL 2003 Physical and Chemical Behavior of...

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