Wells – Processes – With indicating – testing – measuring or locating
Patent
1981-06-23
1984-02-14
Suchfield, George A.
Wells
Processes
With indicating, testing, measuring or locating
166261, 166292, E21B 43247, E21B 4700
Patent
active
044310552
ABSTRACT:
Depleted zones or channels in in situ retorts that bypass unretorted zones can be plugged selectively by contacting the depleted zones in the in situ oil shale retort with an aqueous liquid, substantially free of a formation plugging amount of a solute, to increase the resistance of the depleted zone or channel to the passage of retorting gases.
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Magidson William H.
McClain William T.
Standard Oil Company (Indiana)
Suchfield George A.
Tolpin Thomas W.
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