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US 4,378,131 AGranted
Method for restoring molybdenum to base line level in leached formation
AssigneeMobil Oil Corporation
InventorE. Thomas Strom
Life of this patent
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Abstract
A method is disclosed for restoring to environmentally acceptable levels the soluble molybdenum values in a subterranean formation which has been subjected to in situ oxidative leaching by passing through the leached formation an aqueous restoration fluid containing ferrous ion.
Claims4
A method for restoring to environmentally acceptable levels the soluble molybdenum values in a subterranean formation that has been subjected to oxidative in situ leaching which comprises
- passing through said formation an aqueous restoration fluid containing from about 25 to about 400 mg per liter ferrous ion
- whereby the formation of undesirable insoluble ferrous oxide, ferrous hydroxide, or both is suppressed.
Dependencies are inferred from the claim text.