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Unformatted text preview: 1 PGE 312  FALL 2005 Physical and Chemical Behavior of Petroleum Fluids I Test #3, 50 Minutes Solution Key Problem 1 ( 20 points ) A retrograde condensate gas reservoir has been discovered with the following properties: Initial reservoir pressure = 4500 psia Upper dew point pressure of reservoir gas = 2500 psia Reservoir temperature = 180 ºF Reservoir pay thickness = 500 ft Reservoir porosity = 35% Reservoir water saturation = 15% Gas Z factor at initial reservoir pressure = 0.873 Reservoir area = 9000 acres Calculate the initial gas in place in standard cubic feet. 43560 (1 ) w g Ah S G B φ = 0.02827 g ZT B P = 10 13 3 (43560)(9000)(500)(0.35)(1 0.15) 5.832 10 1.661 10 (0.02827)(0.873)(180 460) 3.510 10 4500 x G x scf x = = = + 2 Problem 2 (25 points) A twostage separator test has been performed in a lab PVT study for a black oil with the following results: Volume of oil at bubble point pressure and reservoir temperature = 201.156 cc Volume of separator liquid at 200 psig and 75 ºF = 150.833 cc Volume of stock tank oil at 0 psig and 75 ºF = 136.591cc Volume of stock tank oil at 0 psig and 60 ºF = 135.6411cc Volume of gas removed from separator = 0.51383 scf Volume of gas removed from stock tank...
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This note was uploaded on 11/23/2009 for the course PGE 312 taught by Professor Peters during the Spring '08 term at University of Texas.
 Spring '08
 Peters

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