1
Beard Thomas N: Method of producing hydrocarbons from an oil shale formation. Shell Oil Company, September 18, 1973: US3759574 (268 worldwide citation)

A method of producing hydrocarbons and optionally water-soluble minerals from a subterranean oil shale formation containing zone(s) of water-soluble minerals, by penetrating said formation with at least one borehole and leaching or dissolving the water-soluble minerals from the formation with a solv ...


2
Ueber Russell C, Van Meurs Peter, Brew Jerke R: Laterally expanding oil shale permeabilization. Shell Oil Company, September 18, 1973: US3759328 (249 worldwide citation)

An improved process of permeabilizing and recovering water soluble and/or heat sensitive minerals and hydrocarbons from an oil shale formation containing said minerals by forming a cavern and vertically expanding it by contacting the cavern roof with a hot aqueous fluid while also causing horizontal ...


3
Papadopoulos Michael N, Ueber Russell C: Method of producing oil from an oil shale formation containing nahcolite and dawsonite. Shell Oil Company, October 24, 1972: US3700280 (230 worldwide citation)

A new and improved method of recovering hydrocarbons and dawsonite decomposition products from a subterranean oil shale formation containing substantial amounts of nahcolite and dawsonite comprising penetrating said formation with at least one well borehole and forming a cavern therein. A hot fluid ...


4
Harold J Vinegar, Eric Pierre de Rouffignac, Kevin Albert Maher, Lanny Gene Schoeling, Scott Lee Wellington: Producing hydrocarbons and non-hydrocarbon containing materials when treating a hydrocarbon containing formation. Shell Oil Company, September 5, 2006: US07100994 (218 worldwide citation)

A method for treating a hydrocarbon containing formation is provided. In one embodiment, heat from one or more heaters may be provided to at least a portion of the formation. Heat may be allowed to transfer from the one or more heaters to at least a part of the formation. In certain embodiments, the ...


5
Harold J Vinegar, Eric Pierre de Rouffignac, Kevin Albert Maher, Lanny Gene Schoeling, Scott Lee Wellington: In situ thermal processing and solution mining of an oil shale formation. Shell Oil Company, February 14, 2006: US06997518 (217 worldwide citation)

An oil shale formation may be treated using an in situ thermal process. Heat may be provided to the treatment area. Fluids may be injected into the formation to remove a component within the formation. Hydrocarbons, H2, and/or other formation fluids may be produced from the formation. In some embodi ...


6
Beard Thomas N, Van Meurs Peter: Process for solution mining nahcolite. Shell Oil Company, December 18, 1973: US3779602 (211 worldwide citation)

The process of solution mining sodium bicarbonate (e.g., nahcolite) from a subsurface sodium bicarbonate containing, oil shale formation with water is improved by conducting leaching operations at a selected temperature greater than 250.degree.F and adjusting pressure to a particular preferred value ...


7
Closmann Philip J: Spreading-fluid recovery of subterranean oil. Shell Oil Company, Coryell H W, April 16, 1974: US3804169 (206 worldwide citation)

In a process for producing shale oil by circulating fluid through a cavity that contacts a subterranean oil shale, the cavity is extended laterally into both an injection well and a plurality of surrounding productions wells and the fluid is circulated at a rate causing the velocity within the cavit ...


8
Harold J Vinegar, George Leo Stegemeier: Solution mining and heating by oxidation for treating hydrocarbon containing formations. Shell Oil Company, June 23, 2009: US07549470 (196 worldwide citation)

A method for treating an oil shale formation comprising nahcolite includes providing a first fluid to a portion of the formation. A second fluid is produced from the portion. The second fluid includes at least some nahcolite dissolved in the first fluid. A controlled amount of oxidant is provided to ...


9
Harold J Vinegar: Solution mining dawsonite from hydrocarbon containing formations with a chelating agent. Shell Oil Company, July 7, 2009: US07556095 (183 worldwide citation)

A method for treating an oil shale formation comprising dawsonite includes providing heat from one or more heaters to the formation to heat the formation. Hydrocarbon fluids are produced from the formation. At least some dawsonite in the formation is decomposed with the provided heat. A chelating ag ...


10
William A Rehm, Donald W Dareing, Edward T Wood: Triple branch completion with separate drilling and completion templates. Thomas Zack, November 15, 1983: US04415205 (179 worldwide citation)

A method, and apparatus to practice the method, to complete multiple (triple) branch wells using separate drill and casing templates. Principally this invention finds its greatest utility in the in situ leach mining of deep lying ore bodies. Initially, a generally vertical main hole is drilled in th ...