Patents Represented by Attorney S. R. LaPaglia
  • Patent number: 4764718
    Abstract: The present invention is comprised of a non-intrusive microwave sensor system for measuring fluid saturation or multiple fluids contained within a flowline or a fluid saturated porous medium. Here, the microwave oil saturation scanner (MOSS) comprises a transmit portion and a measurement portion. The transmit portion generates two signals for different purposes. The first signal is used as a reference signal upon which the sample signal is eventually compared. The second signal is transmitted through the sample which causes a phase angle shift and signal attenuation. The two signals are then compared in the measurement portion where the phase angle shift and the signal attenuation is related to the concentration of oil and water in the sample mixture.
    Type: Grant
    Filed: April 23, 1986
    Date of Patent: August 16, 1988
    Assignee: Chevron Research Company
    Inventors: David E. Revus, Russell E. Boyer
  • Patent number: 4762565
    Abstract: A paving composition comprising about 80 to 97% by weight of an open-graded aggregate and about 3 to 20% asphalt, said composition being formed by successively mixing two asphalt-containing emulsions A and B with said aggregate wherein:emulsion A comprises about 40 to 75% by weight of a soft asphalt having a viscosity in the range of 50 to 1000 centistokes at 210.degree. F. and 0.25 to 5% by weight of a emulsifier, and water as a continuous phase of said emulsion to make up 100% by weight; andemulsion B comprises about 40 to 75% by weight of a hard asphalt having a penetration 5 to 25 dmm at 77.degree. F. and 0.25 to 5% by weight of a emulsifier, and water as a continuous phase of said emulsion to make up 100% by weight.
    Type: Grant
    Filed: October 31, 1986
    Date of Patent: August 9, 1988
    Assignee: Chevron Research Company
    Inventor: Peter E. Graf
  • Patent number: 4755082
    Abstract: The Removable Bottom Founded Structure (RBFS) is an offshore platform for petroleum drilling and producing operations intended for deployment in waters with severe weather and iceberg conditions. It is a two-part structure comprising (1) a platform which is made up of a deck structure, multiple columns and braces; and (2) a reinforced concrete subbase that rests on the sea floor and upon which the platform is founded. The structure is normally held down by gravity for standard platform operations, but during the deballasting procedure due to an iceberg emergency a hold-down system is employed to keep the platform on the subbase until full deballasting is achieved. The system that is used to hold the platform down onto the subbase is located where the platform meets the subbase. It operates on the principle of hydrostatics. On the underside of the columns there are multiple chambers which may be evacuated by pumping and which are vented to the outside atmosphere.
    Type: Grant
    Filed: May 1, 1987
    Date of Patent: July 5, 1988
    Assignee: Chevron Research Company
    Inventors: Robert H. Beskow, Patrick J. Dunn, Warren S. Fine
  • Patent number: 4755312
    Abstract: Disclosed are additives which are useful as dispersants in marine crankcase oils and hydraulic oils, lubricating oils. In particular, disclosed are nitrogen-containing lubricating oil dispersants having at least one primary or secondary amino group which have been modified by treatment with a cyclic carbonate.
    Type: Grant
    Filed: September 19, 1986
    Date of Patent: July 5, 1988
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg
  • Patent number: 4753666
    Abstract: 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 substantially all of the CO.sub.2, ethane, and propane are produced as an overhead vapor. The presence of ethane and propane in the overhead vapors overcomes the effect of nitrogen and methane on minimum miscibility pressure in the reservoir, and the problems created by CO.sub.2 freezing and the CO.sub.2 /ethane azeotrope are avoided, furthermore, a readily marketable liquid product is produced.
    Type: Grant
    Filed: July 24, 1986
    Date of Patent: June 28, 1988
    Assignee: Chevron Research Company
    Inventors: Gerald R. Pastor, Janet F. Peters, Wayne K. Larsen, Al C. Iakovakis
  • Patent number: 4751688
    Abstract: The present invention is a downhole seismic source capable of generating seismic forces in excess of 1000 newtons. The source produces seismic waves for seismic applications, particularly cross borehole measurements and vertical seismic profiling. Coupled with motion sensing devices, the present invention also performs as a seismic logging tool. The source is comprised of an outer housing, a means for clamping the source securely to the wellbore, and a linear electromagnetic actuator which utilizes permanent magnetic material having remanent magnetic field exceeding about 0.9 T such as rare earth permanent magnetics. The source has a diameter of about 12.5 cm to fit within a typical wellbore and the acuator has a length of about 1 meter.
    Type: Grant
    Filed: January 30, 1987
    Date of Patent: June 14, 1988
    Assignee: Chevron Research Company
    Inventor: Bjorn N. P. Paulsson
  • Patent number: 4750988
    Abstract: Hydrocarbons containing vanadium are converted to lower boiling fractions employing a zeolitic cracking catalyst containing a significant concentration of a calcium-containing additive as a vanadium passivating agent.
    Type: Grant
    Filed: May 19, 1987
    Date of Patent: June 14, 1988
    Assignee: Chevron Research Company
    Inventors: Bruce R. Mitchell, Roger F. Vogel
  • Patent number: 4747965
    Abstract: Disclosed are additives which are useful as dispersants in lubricating oils, gasolines, marine crankcase oils and hydraulic oils. In particular, disclosed are multiply adducted alkenyl or alkyl succinimides which contain carbamate functionalities.
    Type: Grant
    Filed: August 15, 1986
    Date of Patent: May 31, 1988
    Assignee: Chevron Research Company
    Inventors: Robert H. Wollenberg, Frank Plavac
  • Patent number: 4747932
    Abstract: A process for dewaxing and stabilizing a hydrocracked bright stock, comprising hydrodenitrification, catalytic dewaxing, and mild hydrofinishing.
    Type: Grant
    Filed: April 10, 1986
    Date of Patent: May 31, 1988
    Assignee: Chevron Research Company
    Inventor: Stephen J. Miller
  • Patent number: 4747850
    Abstract: Disclosed are additives which are useful as dispersants in lubricating oils, gasolines, marine crankcase oils and hydraulic oils. In particular, disclosed are multiply adducted alkenyl or alkyl succinimides which contain carbamate functionalities.
    Type: Grant
    Filed: September 11, 1987
    Date of Patent: May 31, 1988
    Assignee: Chevron Research Company
    Inventors: Robert H. Wollenberg, Frank Plavac
  • Patent number: 4746760
    Abstract: Process for functionalizing saturated hydrocarbons comprising:(a) reacting said saturated hydrocarbons of the formula:R.sub.1 Hwherein H represents a hydrogen atom; and R.sub.1 represents a saturated hydrocarbon radical, with a metal complex of the formula:CpRh[P(R.sub.2).sub.3 ]H.sub.2whereinCp represents a cyclopentadienyl or alkylcyclopentadienyl radical;Rh represents a rhodium atom;P represents a phosphorus atom;R.sub.2 represents a hydrocarbon radical;H represents a hydrogen atom,in the presence of ultraviolet radiation to form a hydridoalkyl complex of the formula:CpRh[P(R.sub.2).sub.3 ](R.sub.1)H(b) reacting said hydridoalkyl complex with an organic halogenating agent such as a tetrahalomethane or a haloform of the formulas:CX'X''X'''X'''' or CHX'X''X'''wherein X', X'', X'", X"" represent halogens selected from bromine, iodine or chlorine atom, at a temperature in the range of about -60.degree. to -17.degree. C. to form the corresponding haloalkyl complex of step (a) having the formula:CpRhPMe.sub.
    Type: Grant
    Filed: February 21, 1985
    Date of Patent: May 24, 1988
    Assignee: Chevron Research Company
    Inventors: Robert G. Bergman, Andrew H. Janowicz, Roy A. Periana
  • Patent number: 4746447
    Abstract: Disclosed are additives which are useful as dispersants in marine crankcase oils and hydraulic oils, lubricating oils. In particular, disclosed are hydrocarbyl-substituted polyamines having at least one primary or secondary amino group which have been modified by treatment with a cyclic carbonate.
    Type: Grant
    Filed: January 10, 1986
    Date of Patent: May 24, 1988
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg
  • Patent number: 4743391
    Abstract: A method for oxidatively degrading an olefinic polymer in the absence of molecular oxygen and utilizing an oxidant mixture of a peroxide and hydroperoxide is disclosed. Lubricating oils containing the products of the oxidation process as well as the products post-reacted with funtional group-containing compounds show improved viscosity index and dispersancy properties.
    Type: Grant
    Filed: March 28, 1983
    Date of Patent: May 10, 1988
    Assignee: Chevron Research Company
    Inventors: Chester D. Gordon, Gian L. Fagan
  • Patent number: 4737478
    Abstract: This invention relates to the preparation of small spheroidal solid agglomerates. More particularly, the process produces strong solid spheroidal agglomerates containing alumina or a mixture of alumina and at least one other inorganic material, which process comprises:(a) mixing at high speed a portion of alumina or a mixture of alumina and at least one other inorganic material in the form of hydrophilic micron-sized particles in a water-immiscible liquid thereby forming a dispersion;(b) gradually adding to the dispersion an aqueous acidic phase while continuing the high-speed mixing until substantially spherical micro-agglomerates form within the water-immiscible liquid;(c) subjecting the micro-agglomerates to agitation in a vessel having a hydrophobic inner surface at a speed low enough to achieve substantially uniformly sized spheroidal agglomerates;(d) drying the agglomerates to produce hardened spheroidal uniformly sized agglomerates; and(e) optionally further separating the agglomerates by size.
    Type: Grant
    Filed: July 2, 1986
    Date of Patent: April 12, 1988
    Assignee: Chevron Research Company
    Inventor: Andrew Rainis
  • Patent number: 4736316
    Abstract: In accordance with the present invention, a constraint dependent control method and system for a large scale refinery, chemical process or the like, is provided that allows on-line optimization of one and preferably two plant inputs without need for optimal set points, through iterative generation of a constraint dependent control code normalized to present time t for "driving" the optimized plant inputs rapidly toward optimization but without destabilizing the plant. The generation of such control code includes evaluation of certain key components associated with elements of an optimizing and stabilizing control vector (OSC) from which the code is derived.
    Type: Grant
    Filed: August 6, 1986
    Date of Patent: April 5, 1988
    Assignee: Chevron Research Company
    Inventor: P. Henrik Wallman
  • Patent number: 4734537
    Abstract: Disclosed is a catalytic process for the production of higher molecular weight hydrocarbons from lower molecular weight hydrocarbons. More particularly, disclosed is a catalytic process for the conversion of methane to C.sub.2 + hydrocarbons, particularly hydrocarbons rich in ethylene or benzene, or both. The process utilizes a metal-containing catalyst, high reaction temperature of greater than 1000.degree. C., and a high gas hourly space velocity of greater than 3200 hr.sup.-1.
    Type: Grant
    Filed: June 27, 1986
    Date of Patent: March 29, 1988
    Assignee: Chevron Research Company
    Inventors: Louis Devries, P. R. Ryason
  • Patent number: 4731498
    Abstract: In a continuous catalytic process for the production of higher molecular weight hydrocarbons from lower molecular weight hydrocarbons in which a lower molecular weight hydrocarbon containing reaction gas is contacted in a reaction zone with a higher molecular weight hydrocarbon synthesis catalyst under C.sub.2 + hydrocarbon synthesis conditions, the improvement comprising increasing the production of higher molecular weight hydrocarbons by the addition of an effective amount of aluminum metal vapor to the reaction gas, said synthesis conditions including a temperature greater than 1000.degree. C. and a gas hourly space velocity of greater than 3200 hr.sup.-1.
    Type: Grant
    Filed: June 27, 1986
    Date of Patent: March 15, 1988
    Assignee: Chevron Research Company
    Inventors: Louis Devries, P. R. Ryason
  • Patent number: 4729848
    Abstract: Metal salts of alkyl catechol esters of dithiophosphoric acid suitable as additives in oil compositions are disclosed. Oil compositions containing the salts of such esters show improved extreme pressure/anti-wear and anti-oxidant properties.
    Type: Grant
    Filed: September 8, 1986
    Date of Patent: March 8, 1988
    Assignee: Chevron Research Company
    Inventors: Elaine S. Yamaguchi, Thomas V. Liston
  • Patent number: 4729842
    Abstract: Disclosed are additives which are useful as dispersants in marine crankcase oils and hydraulic oils, lubricating oils. In particular, disclosed are nitrogen-containing lubricating oil dispersants having at least one primary or secondary amino group which have been modified by treatment with a cyclic carbonate.
    Type: Grant
    Filed: February 28, 1986
    Date of Patent: March 8, 1988
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg
  • Patent number: 4728451
    Abstract: Lubricating oil compositions containing additives for dispersancy and detergency are provided. The additives are poly(oxyalkylene) aminohydrocarbyloxyhydrocarbyl carbamates, also referred to as polyether aminoether carbamates.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: March 1, 1988
    Assignee: Chevron Research Company
    Inventor: Frank Plavac