1
Robert S Burton III, Chang Yul Cha, Richard D Ridley: Apparatus for obtaining uniform gas flow through an in situ oil shale retort. Occidental Petroleum Corporation, Christie Parker & Hale, March 2, 1976: US03941421 (169 worldwide citation)

An in situ oil shale retort in which a cavity filled with broken particles of oil shale is formed within the subsurface oil shale formation and air is forced down through the cavity to sustain combustion of the top layer of oil shale particles. The products of combustion are withdrawn through a plur ...


2
Gordon B French, William J Bartel, Richard D Ridley, Chang Yul Cha, Robert S Burton III: System for fuel and products of oil shale retort. Occidental Petroleum Corporation, Christie Parker & Hale, March 29, 1977: US04014575 (124 worldwide citation)

An underground room in substantially undisturbed shale is filled with fragmented oil shale particles for in situ retorting. A comprehensive system is provided for feeding air to the top of the retort and recovering oil and flue gas from the bottom of the retort. The oil is separated from admixed wat ...


3
William J Bartel, Robert S Burton III: Method for igniting the top surface of oil shale in an in situ retort. Occidental Petroleum Corporation, Christie Parker & Hale, June 7, 1977: US04027917 (23 worldwide citation)

An in situ oil shale retort is ignited by directing a combustible inlet gas mixture into an ignition zone extending across the top of the in situ retort and igniting the combustible mixture to create a combustion zone in the in situ retort. The ignition zone has a sufficient volume of interconnected ...


4
Robert S Burton III: Method of breaking shale oil-water emulsion. Occidental Oil Shale, Christie Parker & Hale, August 29, 1978: US04109718 (15 worldwide citation)

A technique is described for breaking the very strong emulsion of shale oil and water produced by an in situ oil shale retorting process so that separate shale oil and water phases can be recovered. The emulsion is broken by heating it to a temperature of at least about 120.degree. F. and holding at ...


5
Chang Yul Cha, Richard D Ridley, Robert S Burton III: Method and apparatus for retorting oil shale at subatmospheric pressure. Occidental Oil Shale, Christie Parker & Hale, February 28, 1978: US04076312 (13 worldwide citation)

In a process for retorting oil shale in an situ oil shale retort having a tunnel adjacent the retort, off gas is produced. Leakage of the off gas into the tunnel is prevented by withdrawing off gas from the retort at a rate sufficient to reduce the pressure in the retort adjacent the tunnel to a pre ...


6
William J Bartel, Robert S Burton III: Multi-stage method of operating an in situ oil shale retort. Occidental Oil Shale, Christie Parker & Hale, February 7, 1978: US04072350 (13 worldwide citation)

A method of processing oil shale in which an in situ oil shale retort comprising an elongated cavity containing a fragmented permeable mass of formation particles containing oil shale is formed in a subterranean formation containing oil shale to recover liquid and gaseous products. Access to the cav ...


7
William J Bartel, Chang Y Cha, Robert S Burton III: Method for establishing a combustion zone in an in situ oil shale retort. Occidental Oil Shale, Christie Parker & Hale, April 3, 1979: US04147389 (12 worldwide citation)

A method for retorting oil shale in an in situ oil shale retort includes the steps of excavating a void in a subterranean formation containing oil shale and placing combustible material in the void adjacent an ignition situs. Formation is then explosively expanded toward the void to form a retort co ...


8
Richard D Ridley, Robert S Burton III: Determining the locus of a processing zone in an in situ oil shale retort by pressure monitoring. Occidental Oil Shale, Christie Parker & Hale, October 17, 1978: US04120354 (12 worldwide citation)

The locus of a processing zone advancing through a fragmented permeable mass of particles in an in situ oil shale retort in a subterranean formation containing oil shale is determined by monitoring pressure in the retort. Monitoring can be effected by placing a pressure transducer in a well extendin ...


9
Vahan Avetisian, Constantin Bugescu, Robert S Burton III, Craig J Castagnoli, Suk Bae Cha, Kenneth S Lee, Allen M Robin: Method and reactor for producing tire oil. Texaco, George J Darsa, Harold J Delhommer, June 13, 1995: US05423950 (11 worldwide citation)

The reactor forms a chamber which contains the reaction process. There are accesses to the chamber for receiving shredded tires and oil. There are egresses from the chamber for discharging the tire oil and for discharging unreacted elements. Apparatus is located within the chamber which separates th ...


10
Robert S Burton III: Burner for igniting oil shale retort. Occidental Petroleum Corporation, Christie Parker & Hale, November 9, 1976: US03990835 (11 worldwide citation)

A technique is described for igniting the oil shale rubble pile in an in situ oil shale retort. A gas-air burner is lowered through a hole to a plenum over the oil shale to be ignited. An excess of air is passed through the hole and around the burner so that it is kept cool as the flame from it impi ...