Test3Fall06 - 1 PGE 312 FALL 2006 Physical and Chemical...

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1 PGE 312 - FALL 2006 Physical and Chemical Behavior of Petroleum Fluids I Test #3, 50 Minutes Closed Book Note: It will be in your best interest to attempt all the questions. Please budget your time accordingly. Problem 1 (30 points) Your company has discovered a dry gas reservoir with the following characteristics: Reservoir temperature = 180 F ˚ Initial reservoir pressure = 8000 psia Z-factor at initial pressure = 1.26 After the reservoir has produced 200x10 6 scf of gas, the reservoir pressure was measured and found to be 5600 psia. The Z-factor at this pressure is 1.04. a. Determine the initial gas in place in standard cubic feet.
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2 b. Determine the hydrocarbon pore volume in reservoir cubic feet. c. It is planned to abandon the field when the reservoir pressure has declined to 800 psia because it will be uneconomical to continue to produce the reservoir at that pressure. The Z-factor at this abandonment pressure is 0.84. What is the expected gas recovery factor?
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3 Problem 2 (30 points)
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Test3Fall06 - 1 PGE 312 FALL 2006 Physical and Chemical...

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