1
William E Showalter: Geopreater heating method and apparatus. Union Oil Company of California, Gregory F Wirzbicki, William O Jacobson, June 30, 1992: US05126037 (264 worldwide citation)

A separate heat source, such an a skin effect heater, is added to a subterranean heat exchanger and oxygen combustion device for upgrading viscous crude oil feeds. An insulated wire is integrated with combustion oxygen supply piping to form the skin effect heater operating in conjunction with the he ...


2
William E Showalter: Process for recovery of mineral values from underground formations. Union Oil Company of California, Richard C Hartman, Dean Sandford, Daniel R Farrell, August 8, 1978: US04105253 (27 worldwide citation)

Carbon dioxide is admixed with water to form a carbonic acid solution for use as a leaching solution for extraction of uranium by solution mining. An oxidizing agent is also present in the solution.


3
William E Showalter, Elihu Goldish, Ronald J Lukasiewicz: Oil tracing method. Union Oil Company of California, Howard Lambert, G Wirzbicki, D Sandford, July 5, 1988: US04755469 (24 worldwide citation)

A method for tagging an oil so that subsequently it may be identified as to source by incorporating into the oil as a tracer material an oil-soluble or oil-dispersible Group VIB, Group VIIB or lanthanum series rare earth metal salt of a fatty acid. The so-tagged oil may be utilized in any desired ma ...


4
William E Showalter: Oil recovery method and apparatus. Union Oil Company of California, Gregory F Wirzbicki, Clark E De Larvin, August 20, 1991: US05040605 (11 worldwide citation)

A method and apparatus are provided for the recovery of a heavy oil, contained in an outcropping formation, without any significant adverse environmental impact. Broadly, the invention comprises indirectly heating an oil containing formation to reduce the viscosity of the oil therein and concurrentl ...


5
William E Showalter: Steam injection piping. Union Oil Company of California, Gregory F Wirzbicki, William O Jacobson, June 25, 1991: US05025862 (5 worldwide citation)

A steam injection pipe system within a cased wellbore is processed to reduce the emissivity of an outwardly facing surface. The pipe system is combined with: (1) a cleaning device or process for maintaining the low emissivity surface; and (2) a mixed fluid non-condensable gas supply to exclude steam ...


6
William E Showalter: Pressure-responsive valve mechanism. Union Oil Company of California, Richard C Hartman, Dean Sandford, John E Vanderburgh, December 7, 1976: US03995780 (5 worldwide citation)

A pressure-responsive valve mechanism for discharging a slurry of reduced fluid content from the bottom of a solids-liquid separator. The valve mechanism includes (1) an inlet duct for receiving the slurry, (2) an outlet duct which extends below the inlet duct and which is free to move in an axial d ...


7
William E Showalter: Solution mining process. Union Oil Company of California, Dean Sandford, Daniel R Farrell, November 9, 1982: US04358158 (4 worldwide citation)

Process for the solution mining of minerals from a subterranean formation in which a dilute carbonic acid leaching solution is injected through a first well into the formation and a pregnant liquor containing the dissolved minerals is recovered from a second well. Subsequently the direction of flow ...


8
William E Showalter: Solution mining process. Union Oil Company of California, Dean Sandford, Daniel R Farrell, November 9, 1982: US04358157 (3 worldwide citation)

Process for the solution mining of minerals from a subterranean formation using a dilute aqueous carbonic acid leaching solution and intermittent injection of an oxidizing agent.


9
William E Showalter: Solution mining process. Union Oil Company of California, Dean Sandford, Daniel R Farrell, May 6, 1986: US04586752

A solution mining process for recovering mineral values from a subterranean mineral-bearing formation, which includes (1) a first injection-and-production phase during which a leaching solution is injected into the formation and a pregnant liquor is simultaneously recovered from the formation, (2) a ...


10


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