1
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 ...


2
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 ...


3
John F McGuire, J Steven Hurt, Ronald L Wilkerson: Automotive diagnostic system. Chevron Research Company, D A Newell, E J Keeling, September 13, 1983: US04404639 (169 worldwide citation)

A method and apparatus are disclosed for facilitating the diagnosis and servicing of automotive vehicles wherein a communicating network computer interfaces between a plurality of service agencies and a vehicle data base plus a record storage system. The service agencies have diagnostic test equipme ...


4
Limin Hsueh: Hasdrive with multiple offset producers. Chevron Research Company, S R La Paglia, E J Keeling, E A Schaal, September 29, 1987: US04696345 (168 worldwide citation)

The present invention is an improvement on the method of recovering viscous petroleum from a petroleum-containing formation by providing a steam injection well from the earth's surface through the formation, extending at least one lateral hole from the vicinity of the steam injection well through at ...


5
Lewis M Fraas: Multilayer photovoltaic cell. Chevron Research Company, D A Newell, E J Keeling, A Stephen Zavell, June 1, 1982: US04332974 (83 worldwide citation)

A new high efficiency, multijunction photovoltaic solar cell for use with a concentrating lens. This cell comprises an elemental single crystal substrate without an internal light sensitive junction, upon which are two or more successive homogenous layers of semiconductor material, each layer contai ...


6
Gerald R Pastor, Janet F Peters, Wayne K Larsen, Al C Iakovakis: Distillative processing of CO.sub.2 and hydrocarbons for enhanced oil recovery. Chevron Research Company, S R LaPaglia, E J Keeling, V A Norviel, June 28, 1988: US04753666 (80 worldwide citation)

A method of treating CO.sub.2 rich gas for injection into a petroleum reservoir is described. CO.sub.2 rich gas containing methane, nitrogen, ethane, propane, butanes, and heavier components is distilled such that substantially all of the heavier components are produced as a bottoms product and subs ...


7
Kerby S Aslesen, John R Bocek, Dennis R Canfield, Ke Tien Liu: Method and apparatus for testing the outflow from hydrocarbon wells on site. Chevron Research Company, S R La Paglia, E J Keeling, V Norviel, September 27, 1988: US04773257 (79 worldwide citation)

A portable instrument for testing at the wellhead continuously, or a stationary instrument for use at a production battery, the outflow of crude hydrocarbons from the well or wells. The invention utilizes a simple relationship of density and thermal coefficients of expansion of the oil and the water ...


8
Robert E Thompson, Gordon Gould, Charles I Soodak: Armored cable containing a hermetically sealed tube incorporating an optical fiber. Chevron Research Company, S R LaPaglia, E J Keeling, A Stephen Zavell, June 11, 1985: US04522464 (73 worldwide citation)

An armored cable containing a hermetically sealed tube incorporating an optical fiber is described. The armored optical cable exhibits minimal inelastic elongation in response to tension at elevated temperatures and is capable of withstanding harsh ambient conditions.


9
Lee F Donaghey: Resistive hydrocarbon leak detector. Chevron Research Company, S R LaPaglia, E J Keeling, E A Schaal, December 30, 1986: US04631952 (72 worldwide citation)

An apparatus and method for sensing organic liquids, vapors and gases which includes a resistivity sensor means comprising an intimate admixture of conductive particles and a material capable of swelling the presence of the liquid, gas or vapor to be detected and an electrical contact thereto.


10
Gordon Gould, Charles I Soodak, Robert E Thompson: Hermetically sealed optical fiber. Chevron Research Company, S R LaPaglia, E J Keeling, A Stephen Zavell, March 12, 1985: US04504112 (56 worldwide citation)

A hermetically sealed optical fiber tube and process of fabrication. The hermetically sealed tube is fabricated from rolled wires into shaped sectors such that when the sections are joined a cylindrical tube is formed having a sufficient inside diameter to accept one or a plurality of buffered optic ...