Example Problems
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Published:2017
"Example Problems", Low-Energy Processes for Unconventional Oil Recovery, Mohammad Reza Fassihi, Anthony R Kovscek
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Problem B-1—Analysis of Combustion-Tube Run (from H. J. Ramey Jr.*).
The steady burning phase of a combustion-tube run indicates results shown below. Initial pack conditions are also given. Calculate the following given that porosity = 35%; So = 65%; Sw = 30%; kair = 3 darcies; velocity of burning front = 3.5 in./hr; produced-gas rate = 4 scf/hr; pack diameter = 3 in.; and produced-gas composition is O2 = 1.1%, CO2 = 12.59%, CO = 4.1%, and N2 = 82.3%.
Solution B-1
Problem B-2—Forecast of Field Results (from H. J. Ramey Jr.*).
You are assigned the task of forecasting the results of a combustion operation in a 10-acre pilot area consisting of an isolated inverted-five-spot pattern. Formation conditions are the same as given in Problem B-1, and you may assume that combustion-tube results in Problem B-1 are appropriate. Other conditions are:
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