| http://www.w3.org/ns/prov#value | - At the beginning of the fuel gas production step thru any line of wells, if the coke temperature in the stratum is lower than desired for efiicient water-gas reaction, the injection of air alone or in high ratio to steam such as 8 to 1 or even higher may be utilized for a short period, or as long as necessary, to reestablish a desired stratum temperature.
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