Patents Assigned to Chevron U.S.A. Inc.
  • Methods for pressure protection using a gas
    Patent number: 11401460
    Abstract: Disclosed are compositions and methods for the pressure protection of existing wells during infill drilling operations. The methods can include injecting a gas into the existing wellbore in fluid communication with an unconventional subterranean formation prior to and/or during fracturing of the new wellbore in fluid communication with the unconventional subterranean formation.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: August 2, 2022
    Assignee: Chevron U.S.A. Inc.
    Inventors: Samiha Said Elsayed Morsy, Nabijan Nizamidin, Mohsen S. Tagavifar
  • Method for preventing or reducing low speed pre-ignition in direct injected spark-ignited engines with cobalt-containing lubricant
    Patent number: 11401482
    Abstract: Disclosed is a method for preventing or reducing low speed pre-ignition in an engine lubricated with a formulated oil. The formulated oil has a composition comprising at least one oil soluble or oil dispersible cobalt-containing compound.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: August 2, 2022
    Assignees: CHEVRON ORONITE COMPANY LLC, CHEVRON U.S.A. INC.
    Inventors: Ian G. Elliott, Richard E. Cherpeck, Amir Gamal Maria, Theresa Liang Gunawan
  • MODELLING OF A FLUID TREATMENT SYSTEM
    Publication number: 20220236700
    Abstract: Embodiments of modelling a fluid treatment system are provided herein. One embodiment comprises obtaining synthetic data for a fluid treatment system from a data store. The fluid treatment system comprises a membrane and the fluid treatment system is configured to receive a stream of fluid for treatment. The embodiment further comprises training a performance indicator model using the synthetic data to predict a performance indicator for the fluid treatment system. The performance indicator comprises a permeate sulfate performance indicator and the performance indicator model predicts a sulfate content value in a permeate stream.
    Type: Application
    Filed: January 28, 2022
    Publication date: July 28, 2022
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Cheng CHEN, Lauren A. FLORES, Martin Antonio MORLES
  • Modelling Of A Fluid Treatment System
    Publication number: 20220236699
    Abstract: Embodiments of modelling a fluid treatment system are provided herein. One embodiment comprises obtaining synthetic data for a fluid treatment system from a data store. The fluid treatment system comprises a membrane and the fluid treatment system is configured to receive a stream of fluid for treatment. The embodiment comprises training a machine learning pressure prediction model using the synthetic data to predict a pressure for the membrane of the fluid treatment system. The trained pressure prediction model is combinable with an operator training simulator (OTS) model to update the OTS model to improve accuracy of simulation pressure output from the OTS model.
    Type: Application
    Filed: January 28, 2022
    Publication date: July 28, 2022
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Martin Antonio MORLES, Lauren A. FLORES, Cheng CHEN
  • SUBSURFACE STRAIN ESTIMATION USING FIBER OPTIC MEASUREMENT
    Publication number: 20220236445
    Abstract: Strain and time-strain measurement in a well enables derivation of a constant that links the two. Knowledge of the constant along with time-strain measurement at another well enables estimation of strain at the other well.
    Type: Application
    Filed: January 28, 2021
    Publication date: July 28, 2022
    Applicant: CHEVRON U.S.A. INC.
    Inventor: Kevin John Davies
  • Comparison of wells using a dissimilarity matrix
    Patent number: 11397279
    Abstract: Well information may define subsurface configuration of different wells. Marker information defining marker positions within the wells may be obtained. A dissimilarity matrix for the wells may generated, with the element values of the dissimilarity matrix determined based on comparison of corresponding subsurface configuration of the wells. A gated dissimilarity matrix may be generated from the dissimilarity matrix based on the marker positions within the wells. The elements values of the gated dissimilarity matrix corresponding to one set of marker positions and not corresponding to the other set of marker positions may be changed. Correlation between the wells may be determined based on the gated dissimilarity matrix such that correlation exists between a marker position in one well and a marker position in another well.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: July 26, 2022
    Assignee: Chevron U.S.A. Inc.
    Inventors: Brett M. Hern, Tao Sun, Brian J. Willis, Fabien J. Laugier, Ashley D. Harris
  • Process providing improved base oil yield
    Patent number: 11396631
    Abstract: A process for preparing a base oil from a waxy hydrocarbon feedstock is provided. The process comprises passing the hydrocarbon feedstock to a distillation column prior to dewaxing in order to recover a heavy wax cut. The heavy wax is then hydrocracked to lower boiling compounds which can be better isomerized to a base oil with an acceptable cloud point. The base oil yield is also increased.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: July 26, 2022
    Assignee: Chevron U.S.A. Inc.
    Inventors: Jay Parekh, Jifei Jia, Guan-Dao Lei, Kenny Peinado, Yihua Zhang, Shanying Lee
  • Systems and methods for generating permeability scaling functions to estimate permeability
    Patent number: 11391864
    Abstract: Systems and methods for generating permeability scaling function for different features of interest are disclosed. Exemplary implementations may: obtain subsurface data sets; generate permeability scaling functions for individual features of interest; store the permeability scaling functions; and generate upscaled subsurface distributions using the permeability scaling functions.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: July 19, 2022
    Assignee: Chevron U.S.A. Inc.
    Inventors: Mark Skalinski, Rafael Salazar-Tio, Robert Mallan
  • Delaminated layered zeolite precursors and method of preparing same without sonication
    Patent number: 11389788
    Abstract: Provided is a scalable delamination of a SSZ-70 framework zeolite, without the need for sonication, which has been previously made difficult by the charged nature of the imidazolium structure-directing agents that are required for zeolite synthesis. The method comprises contacting a B-SSZ-70 zeolite precursor with a zinc source such as zinc nitrate and a fluoride source.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: July 19, 2022
    Assignees: Chevron U.S.A. Inc., The Regents of the University of California
    Inventors: Alexander Katz, Alexander Okrut, Martina Aigner, Xiaoying Ouyang, Stacey Ian Zones
  • Methods for pressure protection using a foamed pressure protection composition
    Patent number: 11384284
    Abstract: Disclosed are compositions and methods for the pressure protection of existing wells during infill drilling operations. The methods can include injecting a foamed pressure protection composition into the existing wellbore in fluid communication with an unconventional subterranean formation prior to and/or during fracturing of the new wellbore in fluid communication with the unconventional subterranean formation.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: July 12, 2022
    Assignee: Chevron U.S.A. Inc.
    Inventors: Ruth Ellen Hahn, Taimur Malik, Samiha Said Elsayed Morsy, Nabijan Nizamidin, Mohsen S. Tagavifar
  • Use of a borate-acid buffer in oil and gas operations
    Patent number: 11377586
    Abstract: Provided herein are compositions comprising borate-acid buffers, as well as methods of using these compositions in oil and gas operations, including enhanced oil recovery (EOR) operations, fracturing operations, stimulation operations, etc.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: July 5, 2022
    Assignee: Chevron U.S.A. Inc.
    Inventors: Nabijan Nizamidin, Gayani W. Pinnawala, Guo-Qing Tang, Varadarajan Dwarakanath, Gregory A. Winslow, Jordan Taylor Isbell, Taimur Malik
  • PROCESS PROVIDING IMPROVED BASE OIL YIELD
    Publication number: 20220204875
    Abstract: A process for preparing a base oil from a waxy hydrocarbon feedstock is provided. The process comprises passing the hydrocarbon feedstock to a distillation column prior to dewaxing in order to recover a heavy wax cut. The heavy wax is then hydrocracked to lower boiling compounds which can be better isomerized to a base oil with an acceptable cloud point. The base oil yield is also increased.
    Type: Application
    Filed: December 30, 2020
    Publication date: June 30, 2022
    Applicant: Chevron U.S.A. Inc.
    Inventors: Jay Parekh, Jifei Jia, Guan-Dao Lei, Kenny Peinado, Yihua Zhang, Shanying Lee
  • PROCESS TO MAKE FINISHED BASE OILS AND WHITE OILS FROM DEWAXED BULK BASE OILS
    Publication number: 20220204874
    Abstract: Provided in one embodiment is an improved and more flexible process for preparing a finished base oil or a white oil product comprising passing a dewaxed base oil product to a distillation column and separating the dewaxed base oil product into fuel and base oil product streams. The base oil product streams are tested to determine if they meet desired specifications. Base oil product streams that meet the desired minimum base oil specifications are passed to a hydrofinishing reactor to prepare a white oil product, or passed to direct sale.
    Type: Application
    Filed: December 30, 2020
    Publication date: June 30, 2022
    Applicant: Chevron U.S.A. Inc.
    Inventors: Kenny Peinado, Jay Parekh, Jifei Jia, Yihua Zhang, Guan-Dao Lei, Guang Zhang
  • PROCESS HAVING IMPROVED BASE OIL YIELD
    Publication number: 20220204876
    Abstract: Provided is a process for preparing base oil from a waxy hydrocarbon feedstock by contacting the hydrocarbon feedstock in a hydroisomerization zone under hydroisomerization conditions. The reaction is in the presence of hydrogen and an inert gas, with the total pressure in the hydroisomerization zone being at least 400 psig. A product from the hydroisomerization zone is collected and separated into base oil products and fuel products. The inert gas can comprise any suitable inert gas, but is generally nitrogen, methane or argon. Nitrogen is used in one embodiment.
    Type: Application
    Filed: December 30, 2020
    Publication date: June 30, 2022
    Applicant: Chevron U.S.A. Inc.
    Inventors: Kenny Peinado, Jifei Jia, Guan-Dao Lei, Jay Parekh, Yihua Zhang
  • HYDROCRACKING OPERATION WITH REDUCED ACCUMULATION OF HEAVY POLYNUCLEAR AROMATICS
    Publication number: 20220204873
    Abstract: Provided is a hydrocracking process with a recycle loop for converting a petroleum feed to lower boiling products, which process comprises reacting a stream over a non-zeolite noble metal catalyst at a temperature of about 650° F. (343° C.) or less in a reactor positioned in the recycle loop of the hydrocracking reactor.
    Type: Application
    Filed: December 30, 2020
    Publication date: June 30, 2022
    Applicant: Chevron U.S.A. Inc.
    Inventors: Ling Jiao, Bi-Zeng Zhan, Don Bushee, Theodorus Ludovicus Michael Maesen, Hye-Kyung Timken, Richard Dutta, Jay Parekh
  • Systems and methods for estimating refined reservoir productivity values as a function of position in a subsurface volume of interest
    Patent number: 11371336
    Abstract: Systems and methods are disclosed for estimating reservoir productivity values that maximize reservoir productivity of a refined well design corresponding to a reservoir productivity parameter. A computer-implemented method may use a computer system that includes non-transient electronic storage, a graphical user interface, and one or more physical computer processors. The computer-implemented method may include: obtaining multiple limited production parameter values, obtaining multiple refined well designs, obtaining a productivity algorithm that predicts a reservoir productivity based on a production parameter and a well design, and generating multiple refined reservoir productivity values as a function of position in the subsurface volume of interest by applying the multiple refined well designs and the multiple limited production parameter values to the productivity algorithm.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: June 28, 2022
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Shane James Prochnow, Liliia Reddy, Yuanbo Lin, Petros Papazis
  • Systems and methods for associating one or more standard numerical ages to one or more attributes of geological data from disparate locations
    Patent number: 11372131
    Abstract: Systems and methods are disclosed for associating a standard numerical age to an attribute of geological data from disparate locations. Exemplary implementations may include generating a standardized geological age dataset by standardizing geological data to a global reference age based on a dimension of the geological data, a local geotemporal marker, and a dimension to age function; and storing the standardized geological age dataset.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: June 28, 2022
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Elizabeth Anna Edwards Johnson, Cheryl Peyser, Anthony Gary, Lawrence Andrew Febo, Chaoshun Hu
  • Motors including tessellating semi-Halbach stators
    Patent number: 11368060
    Abstract: A device including a plurality of motors is disclosed. The device includes a body comprising a plurality of magnet arrays. Each magnet array comprises a plurality of magnets which define a polygon and the plurality of magnets are arranged in a semi-Halbach configuration. The polygons of the plurality of magnet arrays form a tessellating pattern in which the magnet arrays each share at least one magnet with another one of the magnet arrays. Each magnet is configured to be rotatable relative to the body, or in the case of coils as magnets, the input of each coil can be manipulated to replicate the same or similar effect. The device further comprises a plurality of rotors, wherein each magnet array is configured to receive a rotor rotatable relative to the body.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: June 21, 2022
    Assignee: Chevron U.S.A. Inc.
    Inventors: Scott Jeffrey Seltzer, Boqin Sun
  • Circular economy for plastic waste to polypropylene via oil refinery with filtering and metal oxide treatment of pyrolysis oil
    Patent number: 11359147
    Abstract: Provided in one embodiment is a continuous process for converting waste plastic comprising polyethylene and/or polypropylene into recycle for polypropylene polymerization. The process comprises selecting waste plastics containing polyethylene, polypropylene, or a mixture thereof, and passing the waste plastics through a pyrolysis reactor to thermally crack at least a portion of the polyolefin waste and produce a pyrolyzed effluent. The pyrolyzed effluent is separated into offgas, a pyrolysis oil comprising a naphtha, diesel and heavy fractions, and char. The pyrolysis oil, or at least a fraction, is passed to a filtration/metal oxide treatment, with the treated product passed to a refinery FCC unit. A liquid petroleum gas C3 olefin/paraffin mixture fraction is recovered from the FCC unit, as well as a C4 olefin/paraffin mixture fraction.
    Type: Grant
    Filed: April 22, 2021
    Date of Patent: June 14, 2022
    Assignee: Chevron U.S.A. Inc.
    Inventor: Hye-Kyung Timken
  • System and method for full waveform inversion of seismic data with reduced computational cost
    Patent number: 11360230
    Abstract: A method is described for seismic inversion including receiving a processed seismic image and an enhanced seismic image representative of a subsurface volume of interest; forward modeling the processed seismic image and the enhanced seismic image to generate a first modeled dataset and a second modeled dataset; differencing the first modeled dataset and the second modeled dataset to create a residual dataset; filtering the first modeled dataset to generate an approximation of illumination; preconditioning the residual dataset with the approximation of illumination to generate an adjoint source; back projecting the adjoint source to determine a model update; and applying the model update to an earth model of the subsurface volume of interest.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: June 14, 2022
    Assignee: Chevron U.S.A. Inc.
    Inventors: Siwei Li, Guojian Shan, Yue Wang