Method for producing methane-containing gaseous mixtures
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United States of America Patent
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Feb 14, 1995
Grant Date -
N/A
app pub date -
Nov 3, 1993
filing date -
Nov 3, 1993
priority date (Note) -
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Abstract
A method is disclosed for increasing the production of methane from a solid carbonaceous subterranean formation having a standard initial production rate of a methane-containing gas of X standard cubic feet per unit time. The method comprises the steps of injecting an inert methane-desorbing gas into the formation; terminating injection of the methane-desorbing gas; and thereafter recovering greater than X standard cubic feet per unit time of a methane-containing gas from the formation. In some embodiments, a number of well systems exceeding the number of available inert gas production and injection units can be operated in accordance with the present invention to yield greater methane-containing gas production than would be obtained if the available injection systems were dedicated continuously to particular well systems.
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