1
Donald J Anderson, Charles F Kirkvold, Peter Pisio: Method of recovering viscous petroleum from tar sand. Chevron Research Company, R L Freeland Jr, Edward J Keeling, November 30, 1976: US03994340 (275 worldwide citation)

Recovery of viscous petroleum such as from tar sands is assisted using a substantially vertical passage from the earth's surface which penetrates the tar sand and has extending therefrom a lateral hole containing a flow path isolated from the tar sand for circulating a hot fluid to and from the vert ...


2
Clark J Egan: Method of power generation via coal gasification and liquid hydrocarbon synthesis. Chevron Research Company, G F Magdeburger, R H Davies, J J De Young, October 19, 1976: US03986349 (258 worldwide citation)

Disclosed is an integrated process for the generation of power, particularly electrical power, from a solid carbonaceous material. A solid carbonaceous material is gasified to produce a combustible synthesis gas. A first portion of this synthesis gas is contacted with Fischer-Tropsch and hydrogenati ...


3
Donald J Anderson, Charles F Kirkvold, Peter Pisio, John R Lishman: Recovering viscous petroleum from thick tar sand. Chevron Research Company, R L Freeland Jr, Edward J Keeling, November 30, 1976: US03994341 (255 worldwide citation)

Recovery of viscous petroleum such as from thick tar sands is assisted using a closed-loop flow path from the earth's surface through a substantial portion of the formation for conducting hot fluid to reduce the viscosity of the petroleum in the formation to develop a potential passage in the format ...


4
Stephen J Miller: Process for stabilizing lube base stocks derived from bright stock. Chevron Research Company, W K Turner, G D Haynes, V J Cavalieri, December 9, 1986: US04627908 (246 worldwide citation)

A process for stabilizing a lubricating oil base stock derived from a nitro-aromatic-containing hydrocracked bright stock, comprising a two-step stabilizing process utilizing hydrodenitrification followed by mild hydrofinishing.


5
Peter Pisio, Charles F Kirkvold: System for recovering viscous petroleum from thick tar sand. Chevron Research Company, E J Keeling, R L Freeland Jr, April 26, 1977: US04019575 (245 worldwide citation)

Recovery of viscous petroleum such as from thick tar sands is assisted using a closed-loop flow path formed in a well by concentric casing and tubular members extending from the earth's surface through a substantial portion of the formation for conducting hot fluid to reduce the viscosity of the pet ...


6
Harold Beuther, Charles L Kibby, Thaddeus P Kobylinski, Richard B Pannell: Conversion of synthesis gas to diesel fuel and gasoline. Chevron Research Company, Roylance Abrams Berdo & Goodman, August 12, 1986: US04605680 (239 worldwide citation)

Synthesis gas is converted to diesel fuel and a high octane gasoline in two stages. In the first stage the synthesis gas is converted to straight chain paraffins mainly boiling in the diesel fuel boiling range utilizing a catalyst consisting essentially of cobalt, preferably promoted with a Group II ...


7
Bruce W Davis: In situ chemical stimulation of diatomite formations. Chevron Research Company, S R La Paglia, E J Keeling, V A Norviel, May 9, 1989: US04828031 (230 worldwide citation)

An improved method of recovering oil from diatomite is described. A solvent is injected into the diatomite followed by an aqueous surface active solution. The aqueous surface active solution contains a diatomite/oil water wettability improving agent and an oil/water surface tension lowering agent. T ...


8
Stacey I Zones, D I Holtermann, R A Innes, T A Pecoraro, D S Santilli, J N Ziemer: Zeolite SSZ-25. Chevron Research Company, S R La Paglia, T G DeJonghe, V J Cavalieri, May 2, 1989: US04826667 (219 worldwide citation)

A crystalline zeolite SSZ-25 is prepared using an adamantane quaternary ammonium ion as a template.


9
Luther T Porter: Advancing heated annulus steam drive. Chevron Research Company, G W Wasson, L S Gruber, Edward J Keeling, July 17, 1984: US04460044 (209 worldwide citation)

A method is disclosed for producing viscous petroleum from subsurface deposits. The method employs a vertical well and a horizontal well through the petroleum deposit. A combination of injection procedures through the horizontal and vertical well heat the viscous petroleum in the annulus around the ...


10
Theodore R Blevins: Arrangement of wells for producing subsurface viscous petroleum. Chevron Research Company, J A Buchanan Jr, R L Freeland Jr, G W Wasson, December 1, 1981: US04303126 (202 worldwide citation)

A method is disclosed for recovering viscous crudes from petroleum-containing formation, such as tar sand deposits, which are too deep to mine economically but not deep enough, or geologically not structured properly, to successfully hydraulically fracture for well to well production. The method con ...