Patents Assigned to Chevron U.S.A.
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Patent number: 9084991Abstract: An acid catalyst effective for a conversion of a hydrocarbon, comprising: greater than 15 wt % halide-containing conjunct polymer, and a Lewis acid; wherein less than 0.1 wt % solid precipitates from the catalyst when it is held for three hours or longer at 25° C. or below.Type: GrantFiled: October 26, 2012Date of Patent: July 21, 2015Assignee: Chevron U.S.A.Inventors: Sven Ivar Hommeltoft, Howard Steven Lacheen, Saleh Ali Elomari
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Publication number: 20140130581Abstract: Disclosed herein is a method for determining the effectiveness of one or more asphaltene dispersant additives for inhibiting or preventing asphaltene precipitation in a hydrocarbon-containing material subjected to elevated temperature and pressure conditions.Type: ApplicationFiled: November 13, 2012Publication date: May 15, 2014Applicant: Chevron U.S.A.Inventors: Cesar Ovalles, Estrella Rodgel
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Patent number: 8435400Abstract: Systems and methods for hydroprocessing heavy oil feedstock is disclosed. The process employs a plurality of contacting zones and at least a separation zone to convert at least a portion of the heavy oil feedstock to lower boiling hydrocarbons, forming upgraded products. In one embodiment, water and/or steam being injected into at least a contacting zone. The contacting zones operate under hydrocracking conditions, employing at least a slurry catalyst. In one embodiment, at least a portion of the non-volatile fractions recovered from at least one of the separation zones is recycled back to at least a contacting zone (“recycled mode”). In one embodiment, the number of separation zones is less than the number of contacting zones in the system. In the separation zones, upgraded products are removed overhead and optionally treated in an in-line hydrotreater; and the bottom stream is optionally further treated in a fractionator.Type: GrantFiled: May 9, 2011Date of Patent: May 7, 2013Assignee: Chevron U.S.A.Inventors: Bo Kou, Shuwu Yang, Bruce Reynolds, Julie Chabot
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Publication number: 20130055757Abstract: The present disclosure is directed to a method and system for preventing carry-over of C2+ hydrocarbon mist from an NGL recovery column in an LNG plant. A wash loop of recirculating liquid hydrocarbon is provided at the upper portion of the NGL column. A sidestream of liquid hydrocarbons collected within the column is removed from the column and pumped to sufficient height to be returned to the column at a temperature substantially equivalent to the temperature of liquid with the upper portion of the column. In one embodiment, liquid hydrocarbons of a desired composition can be loaded and reloaded to a working medium holding drum in fluid communication with the top of the column. The working medium can be selected to be sufficiently heavy not to be lost from the column and to have a suitable freezing point to avoid freezing within the column.Type: ApplicationFiled: September 6, 2011Publication date: March 7, 2013Applicant: Chevron U.S.A.Inventors: Stanley H. Huang, Kalapi D. Sheth
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Patent number: 8389433Abstract: A hydroprocessing bulk catalyst is provided. A process to prepare hydroprocessing bulk catalysts is also provided. The hydroprocessing catalyst has the formula (Rp)i(Mt)a(Lu)b(Sv)d(Cw)e(Hx)f(Oy)g(Nz)h, wherein M is at least at least a “d” block element metal; L is also at least a “d” block element metal, but different from M; t, u, v, w, x, y, z representing the total charge for each of the components (M, L, S, C, H, O and N, respectively); R is optional and in one embodiment, R is a lanthanoid element metal; 0<=i<=1; pi+ta+ub+vd+we+xf+yg+zh=0; 0<b; 0<b/a=<5; 0.5(a+b)<=d<=5(a+b); 0<e<=11(a+b); 0<f<=7(a+b); 0<g<=5(a+b); 0<h<=2(a+b). The catalyst has an X-ray powder diffraction pattern with at least three diffractions peak located at 2-? angles of greater than 25°.Type: GrantFiled: November 24, 2009Date of Patent: March 5, 2013Assignee: Chevron U.S.A.Inventors: Oleg Mironov, Alexander E. Kuperman, Jinyi Han
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Publication number: 20130029893Abstract: Provided is a process for preparing a turbine oil formulation comprised of a base oil selected from the group consisting of Group II, III and IV base oils and mixtures thereof, and an ester component comprised of at least one diester or triester species having ester links on adjacent carbons. The formulation exhibits less than 6 mg of sludge/100 ml of turbine oil and is imminently suitable for use as a turbine oil.Type: ApplicationFiled: July 27, 2011Publication date: January 31, 2013Applicant: Chevron U.S.A.Inventors: Mark E. Okazaki, Nicole A. Ketterer
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Publication number: 20130029891Abstract: Provided is a turbine oil formulation comprised of a base oil selected from the group consisting of Group II, III and IV base oils and mixtures thereof, and an ester component comprised of at least one diester or triester species having ester links on adjacent carbons. The formulation exhibits less than 6 mg of sludge/100 ml of turbine oil, and is imminently suitable for use as a turbine oil.Type: ApplicationFiled: July 27, 2011Publication date: January 31, 2013Applicant: Chevron U.S.A.Inventors: Mark E. Okazaki, Nicole A. Ketterer
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Publication number: 20130001128Abstract: A method is provided for converting synthesis gas to liquid hydrocarbon mixtures useful as distillate fuel and/or lube base oil. The synthesis gas is contacted with a synthesis gas conversion catalyst comprising a Fischer-Tropsch synthesis component in an upstream catalyst bed thereby producing an intermediate hydrocarbon mixture containing olefins and C21+ normal paraffins. The intermediate hydrocarbon mixture is subsequently contacted with a hydroisomerization catalyst and an olefin saturation catalyst, thereby resulting in a product containing no greater than about 25 wt % olefins and containing no greater than about 5 wt % C21+ normal paraffins. The hydroisomerization and olefin saturation catalysts may be in separate beds or mixed in a single bed downstream of the synthesis gas conversion catalyst.Type: ApplicationFiled: June 29, 2011Publication date: January 3, 2013Applicant: Chevron U.S.A.Inventors: Charles L. Kibby, Robert J. Saxton, Kandaswamy Jothimurugesan, Tapan K. Das
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Publication number: 20120279222Abstract: Systems and methods are disclosed for storing energy and generating power and/or heat within a subsea environment. The systems and methods utilize stored compressed air within an air storage chamber to drive an engine/generator system in order to generate power. The engine may or may not utilize combustion. Alternatively, the systems and methods utilize stored compressed air to supply air to a combustor to generate heat. The heat generated can be used for variety of purposes, including to generate steam and to heat heavy oil.Type: ApplicationFiled: May 5, 2011Publication date: November 8, 2012Applicant: Chevron U.S.A.Inventors: Harrison W. Sigworth, JR., Trevor N. Demayo, Yaofan Yi
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Publication number: 20120171094Abstract: An aqueous ionic absorbent solution is disclosed containing (a) about 15 wt. % to about 80 wt. % of one or more diluents, based on the total weight of the aqueous ionic absorbent solution; and (b) an ionic absorbent containing a cation and an anion comprising an amine moiety.Type: ApplicationFiled: December 30, 2010Publication date: July 5, 2012Applicants: University of South Alabama, Chevron U.S.A.Inventors: Daniel Chinn, Russell Evan Cooper, Zunqing He, James H. Davis, JR., Kevin N. West, Hye Kyung Timken, Michael S. Driver
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Publication number: 20120167766Abstract: A process and system for separating CO2 from a flue gas stream is disclosed. The process involves (a) contacting a flue gas stream containing water vapor and CO2 with an ionic absorbent under absorption conditions to absorb at least a portion of the CO2 from the flue gas stream and form a CO2-absorbent complex; wherein the ionic absorbent comprises a cation and an anion comprising an amine moiety; and (b) recovering a gaseous product having a reduced CO2 content.Type: ApplicationFiled: December 30, 2010Publication date: July 5, 2012Applicants: University of South Alabama, Chevron U.S.A.Inventors: Daniel Chinn, Russell Evan Cooper, Zunqing He, James H. Davis, JR., Kevin N. West, Hye Kyung Timken, Michael S. Driver
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Publication number: 20110318263Abstract: The present invention is directed to a new crystalline molecular sieve designated SSZ-81, which is synthesized using a structure directing agent selected from 1,5-bis(1-azonia-bicyclo[2.2.2]octane)pentane dications, 1,5-bis(1,4-diazabicyclo[2.2.2]octane)pentane dications, and mixtures thereof.Type: ApplicationFiled: June 16, 2011Publication date: December 29, 2011Applicant: Chevron U.S.A.Inventors: Stacey I. Zones, Anna Jackowski
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Patent number: 7956002Abstract: An ionic liquid catalyst, which has been regenerated by contacting a used ionic liquid catalyst with at least one regeneration metal in a regeneration zone in the presence of added hydrogen under regeneration conditions for a time sufficient to increase the activity of the ionic liquid catalyst. Also, an ionic liquid catalyst which has been regenerated by contacting a used ionic liquid catalyst with at least one regeneration metal in a regeneration zone in the presence of added hydrogen under regeneration conditions in the presence of an inert hydrocarbon in which conjunct polymers are soluble for a time sufficient to increase the activity of the ionic liquid catalyst.Type: GrantFiled: April 13, 2010Date of Patent: June 7, 2011Assignee: Chevron U.S.A.Inventors: Saleh Elomari, Thomas V. Harris
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Publication number: 20100152073Abstract: A lubricating oil composition having a sulfur content of up to about 0.4 wt. % and a sulfated ash content of up to about 0.5 wt. % as determined by ASTM D874 is disclosed which comprises (a) a major amount of an oil of lubricating viscosity; (b) at least one oil-soluble or dispersed oil-stable boron-containing compound having no more than about 600 ppm of boron, based upon the total mass of the composition; and (c) at least one oil-soluble or dispersed oil-stable molybdenum-containing compound having no more than about 800 ppm of molybdenum, based upon the total mass of the composition; wherein the lubricating oil composition has a ratio of sulfur to molybdenum of about 5:1 to about 500:1.Type: ApplicationFiled: December 17, 2008Publication date: June 17, 2010Applicants: Chevron Oronite Company LLC, Chevron U.S.A.Inventors: Kenneth D. Nelson, Alexander B. Boffa, William M. Kleiser, Stephen D. Stults, James A. McGeehan, Wim Van Dam, Richard E. Cherpeck
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Publication number: 20100152074Abstract: A lubricating oil composition having a sulfur content of up to about 0.4 wt. % and a sulfated ash content of up to about 0.5 wt. % as determined by ASTM D874 is disclosed which comprises (a) a major amount of an oil of lubricating viscosity; (b) at least one oil-soluble or dispersed oil-stable boron-containing compound having no more than about 400 ppm of boron; and (c) at least one oil-soluble or dispersed oil-stable molybdenum-containing compound having at least about 1100 ppm of molybdenum, based upon the total mass of the composition; wherein the lubricating oil composition has a ratio of sulfur to molybdenum of less than or equal to about 4:1.Type: ApplicationFiled: December 17, 2008Publication date: June 17, 2010Applicants: Chevron Oronite Company LLC, Chevron U.S.A.Inventors: Kenneth D. Nelson, Alexander B. Boffa, William M. Kleiser, Stephen D. Stults, James A. McGeehan, Wim Van Dam, Richard E. Cherpeck
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Publication number: 20100152072Abstract: A lubricating oil composition having a sulfur content of up to about 0.4 wt. % and a sulfated ash content of up to about 0.5 wt. % as determined by ASTM D874 is disclosed which comprises (a) a major amount of an oil of lubricating viscosity; (b) at least one oil-soluble or dispersed oil-stable boron-containing compound having greater than 400 ppm of boron, based upon the total mass of the composition; and (c) at least one oil-soluble or dispersed oil-stable molybdenum-containing compound having at least about 1100 ppm of molybdenum, based upon the total mass of the composition; wherein the lubricating oil composition has a ratio of sulfur to molybdenum of less than or equal to about 4:1.Type: ApplicationFiled: December 17, 2008Publication date: June 17, 2010Applicants: Chevron Oronite Company LLC, Chevron U.S.A.Inventors: Kenneth D. Nelson, Alexander B. Boffa, William M. Kleiser, Stephen D. Stults, James A. McGeehan, Wim Van Dam, Richard E. Cherpeck
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Patent number: 7660674Abstract: The present invention determines seismic data quality for a plurality of locations within a seismic survey for a geologic or geophysical region of interest. The present invention additionally includes generating correlation coefficients which relate to the seismic data quality so that the seismic data quality can be incorporated into geostatistical analyses associated with decisions that are based in part on the seismic survey.Type: GrantFiled: August 2, 2007Date of Patent: February 9, 2010Assignee: Chevron U.S.A.Inventors: James R. Magill, John K. Washbourne
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Patent number: 7432402Abstract: The present invention relates to new crystalline molecular sieve SSZ-74 prepared using a hexamethylene-1,6-bis-(N-methyl N-pyrrolidinium) dication as a structure-directing agent, and processes employing SSZ-74 in a catalyst.Type: GrantFiled: December 21, 2006Date of Patent: October 7, 2008Assignee: Chevron U.S.A.Inventors: Stacey I. Zones, Allen W. Burton, Jr.
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Patent number: 7231974Abstract: A simple and inexpensive device with no moving arts for removing from a well non-aqueous liquids, such as gasoline or crude oil, that accumulate on top of the water table in the well comprises a buoyant elongated member, such as a plastic tube sealed at both ends, and a hydrophobic sorbtive material preferably attached to the outside of the tube. The buoyant device is lowered into the well where it floats either in the non-aqueous liquids or in the water such that the sorbtive material is in contact with and absorbs the non-aqueous liquids from the surface of the water. The buoyant device is then removed from the well, the spent sorbtive material replaced with fresh sorbtive material and the device again lowered into the well for further removal of non-aqueous liquids.Type: GrantFiled: April 8, 2005Date of Patent: June 19, 2007Assignee: Chevron U.S.A.Inventor: G. Scott Thorsell
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Patent number: 7021378Abstract: A method for retaining a treatment chemical in a subterranean formation containing hydrocarbons is disclosed. The method includes first preparing an emulsion. The emulsion contains an oil continuous phase and first and second aqueous phases. The first aqueous phase includes a treatment chemical, such as a scale inhibitor. The second aqueous phase comprises a retention enhancing chemical which is to be reacted with the treatment chemical in the subterranean formation. Preferably, the first and second aqueous phases remain generally separately dispersed and stable within the oil continuous phase prior to being introduced into the subterranean formation. The emulsion is then placed down a well bore and into the subterranean formation.Type: GrantFiled: December 31, 2003Date of Patent: April 4, 2006Assignee: Chevron U.S.A.Inventor: Gabriel Prukop