1
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 ...


2
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 (220 worldwide citation)

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


3
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 ...


4
Max D Kelley: Process for pyrolyzing hydrocarbonaceous solids to recover volatile hydrocarbons. Chevron Research Company, S R La Paglia, W K Turner, Q T Dickinson, October 1, 1985: US04544478 (104 worldwide citation)

Hydrocarbonaceous solids are pyrolyzed in a process employing a series of alternate pyrolysis zones and combustion zones preferably arranged along an incline. In particular, low grade hydrocarbonaceous solids are employed to supplement combustion in these alternating combustion zones.


5
Arthur J Dahlberg, John H Shinn, Joel W Rosenthal, Tim T Chu: Two-step hydroprocessing of heavy hydrocarbonaceous oils. Chevron Research Company, D A Newell, S R La Paglia, S H Roth, June 21, 1983: US04389301 (92 worldwide citation)

A heavy hydrocarbonaceous oil feed is hydrogenated in a two-stage process by contacting the oil with hydrogen in the presence of added dispersed hydrogenation catalyst, suspended in the oil, and porous solid contact particles. At least part of the normally liquid product from the first stage is hydr ...


6
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 ...


7
Jaime Lopez, Eugene A Pasek: Dispersed group VIB metal sulfide catalyst promoted with Group VIII metal. Chevron Research Company, S R La Paglia, Q Todd Dickinson, April 25, 1989: US04824821 (74 worldwide citation)

A process for the preparation of a dispersed Group VIB metal sulfide catalyst which is promoted with a Group VIII metal for use in hydrocarbon oil hydroprocessing comprising dissolving a Group VIB metal compound, such as molybdenum oxide or tungsten oxide, with ammonia to form a water soluble compou ...


8
Douglas L Ely, David A Heffner: Process for in situ biodegradation of hydrocarbon contaminated soil. Chevron Research Company, S R La Paglia, T G De Jonghe, P L McGarrigle Jr, August 23, 1988: US04765902 (73 worldwide citation)

The present invention is a process for in situ biodegradation of spilled hydrocarbons. The process involves drawing oxygen into a hydrocarbon contaminated zone. A borehole is drilled into the contaminated zone and gas is evacuated at high rates out of the borehole to thereby draw oxygen into the con ...


9
Clifford M Detz, Leslie A Field: Benzene synthesis. Chevron Research Company, D A Newell, S R La Paglia, W L Stumpf, August 31, 1982: US04347394 (71 worldwide citation)

A process for selectively producing benzene using intermediate pore size zeolites substantially free of acidity is disclosed.


10
Christopher W Kuehler, Arthur J Dahlberg: Two-stage, close-coupled thermal catalytic hydroconversion process. Chevron Research Company, S R La Paglia, W K Turner, Q T Dickinson, January 14, 1986: US04564439 (54 worldwide citation)

A process for the production of transportation fuels from heavy hydrocarbonaceous feedstock is provided comprising a two-stage, close-coupled process, wherein the first stage comprises a hydrothermal zone into which is introduced a mixture comprising the feedstock, dispersed demetalizing contact par ...