Solution mining
Patent 4753485 Issued on June 28, 1988. Estimated Expiration Date: 
July 18, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 18, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2404341 2754098 3386508 Method of interconnecting wells for solution mining Recovery of bitumen from tar sands In-situ leach mining method using branched single well for input and output Uranium leeching process and insitu mining Single well-multiple cavity solution mining of an inclined structure Patent #: 4425003 InventorAssigneeApplicationNo. 06/887124 filed on 07/18/1986US Classes:299/5, Dissolving or chemical reaction175/61Boring curved or redirected boresExaminersPrimary: Novosad, Stephen J.Assistant: Bagnell, David Attorney, Agent or FirmInternational ClassesE21B 7/04 (20060101)E21B 7/06 (20060101) E21B 4/02 (20060101) E21B 43/30 (20060101) E21B 43/00 (20060101) E21B 4/00 (20060101) AbstractA method for enhanced mineral recovery from a subsurface earth formation is disclosed. An outer loop borehole is formed from a vertical shaft. A leaching fluid is injected from the surface to the outer loop borehole to leach away minerals in proximity with the loop. | |
