Patents Assigned to Chevron U.S.A. Inc.
-
Patent number: 11834606Abstract: Embodiments of treating fluid comprising hydrocarbons, water, and polymer being produced from a hydrocarbon-bearing formation are provided. One embodiment comprises adding a concentration of a viscosity reducer to the fluid to degrade the polymer present in the fluid and adding a concentration of a neutralizer to the fluid to neutralize the viscosity reducer in the fluid. The addition of the concentration of the viscosity reducer is in a sufficient quantity to allow for complete chemical degradation of the polymer prior to the addition of the concentration of the neutralizer in the fluid such that excess viscosity reducer is present in the fluid. The addition of the concentration of the neutralizer is sufficiently upstream of any surface fluid processing equipment to allow for complete neutralization of the excess viscosity reducer such that excess neutralizer is present in the fluid prior to the fluid reaching any of the surface fluid processing equipment.Type: GrantFiled: January 21, 2022Date of Patent: December 5, 2023Assignee: CHEVRON U.S.A. INC.Inventors: Sumitra Subrahmanyan, Gayani W. Pinnawala, Sophany Thach, Gregory A. Winslow, Dennis A. Alexis, Harold C. Linnemeyer, Timothy P. Theriot, Les Leszek Jackowski, Francesca Cibotti
-
Patent number: 11834609Abstract: Embodiments of the disclosure include compositions and methods that stabilize a injection fluid when exposed to reservoir conditions, reducing formation damage and increasing the amount of hydrocarbon recovered. Specifically, the formulation is a single-phase liquid surfactant package which comprises a surfactant and optionally one or more secondary surfactants. Also provided are methods of using the stabilized injection fluids in stimulation operations.Type: GrantFiled: July 31, 2018Date of Patent: December 5, 2023Assignee: CHEVRON U.S.A. INC.Inventors: Dustin L. Walker, Gayani W. Pinnawala, Nabijan Nizamidin, Varadarajan Dwarakanath, Guo-Qing Tang, Dustin J. Lowry, Tetsuo Art Inouye, Taimur Malik
-
Publication number: 20230381759Abstract: A novel synthetic crystalline molecular sieve material, designated boron SSZ-121 is provided. The boron SSZ-121 can be synthesized using 1,3-bis(1-adamantyl)imidazolium cations as a structure directing agent. The boron SSZ-121 may be used in organic compound conversion reactions and/or sorptive processes.Type: ApplicationFiled: May 30, 2023Publication date: November 30, 2023Applicant: Chevron U.S.A. Inc.Inventors: Stacey I. Zones, Cong-Yan Chen
-
Publication number: 20230381760Abstract: Provided is a novel synthetic crystalline borongermanosilicate molecular sieve material, designated boron SSZ-113. The boron SSZ-113 can be synthesized using 1,3 bis(2,3-dimethyl-1H-imidazolium) propane dications as a structure directing agent. The boron SSZ-113 may be used in organic compound conversion reactions and/or sorptive processes, and in particular, in reforming reactions.Type: ApplicationFiled: May 30, 2023Publication date: November 30, 2023Applicant: Chevron U.S.A. Inc.Inventors: Stacey I. Zones, Cong-Yan Chen
-
Publication number: 20230382744Abstract: A novel synthetic crystalline borongermanosilicate molecular sieve material, designated boron SSZ-117x, is provided. The boron SSZ-117x can be synthesized using N,N,N,3,5-pentamethyladamantan-1-ammonium cations as a structure directing agent. The synthesis employs a boron pathway to achieve the boron molecular sieve. The boron SSZ-117x may be used in organic compound conversion reactions, such as reforming, and/or sorptive processes.Type: ApplicationFiled: May 30, 2023Publication date: November 30, 2023Applicant: Chevron U.S.A. Inc.Inventors: Stacey I. Zones, Cong-Yan Chen
-
Publication number: 20230382748Abstract: A novel synthetic crystalline aluminogermanosilicate molecular sieve material, designated SSZ-117x, is provided which exhibits increased acidity. The SSZ-117x can be synthesized using N,N,N,3,5-pentamethyladamantan-1-ammonium cations as a structure directing agent. The synthesis employs a boron pathway to achieve increased acid sites. The SSZ-117x of increased acidity may be used in organic compound conversion reactions and/or sorptive processes.Type: ApplicationFiled: May 30, 2023Publication date: November 30, 2023Applicant: Chevron U.S.A. Inc.Inventor: Stacey I. Zones
-
Publication number: 20230382745Abstract: A novel synthetic crystalline molecular sieve material, designated SSZ-113 is provided which exhibits increased acidity. The SSZ-113 can be synthesized using 1,3-bis(2,3-dimethyl-1H-imidazolium)propane dications as a structure directing agent. The synthesis employs a boron pathway to achieve increased acid sites. The SSZ-113 of increased acidity may be used in organic compound conversion and/or sorptive processes.Type: ApplicationFiled: May 30, 2023Publication date: November 30, 2023Applicant: Chevron U.S.A. Inc.Inventor: Stacey I. Zones
-
Publication number: 20230382746Abstract: A novel synthetic crystalline aluminogermanosilicate molecular sieve material, designated SSZ-121 is provided which exhibits increased acidity. The SSZ-121 can be synthesized using 1,3-bis(1-adamantyl)imidazolium cations as a structure directing agent. The synthesis employs a boron pathway to achieve increased acid sites. The SSZ-121 of increased acidity may be used in organic compound conversion reactions and/or sorptive processes.Type: ApplicationFiled: May 30, 2023Publication date: November 30, 2023Applicant: Chevron U.S.A. Inc.Inventor: Stacey I. Zones
-
Patent number: 11828152Abstract: The present disclosure provides methods and systems for hydrofracturing processes utilizing native drilling cuttings to enhance wellbore permeability. The native drilling cuttings are obtained during drilling operations and may be used in hydrofracturing applications without further grinding or processing. The native drilling cuttings can be combined into a slurry and injected into a well for the hydrofracturing application. In some cases, the native drilling cuttings are dried before combining them with the slurry.Type: GrantFiled: April 15, 2021Date of Patent: November 28, 2023Assignee: CHEVRON U.S.A. INC.Inventors: Robert Neil Trotter, Caleb Kimbrell Carroll, Harold Gordon Riordan, Leonardo F. Chaves Leal, Matthew David Sonnier, Jonathon Donald Fisher, Harry Martin Fernau, John Thomas Lattal, Amos Sunghyun Kim
-
Patent number: 11826721Abstract: Metal nanoparticle-deposited, nitrogen-doped carbon adsorbents are disclosed, along with methods of removing sulfur compounds from a hydrocarbon feed stream using these adsorbents.Type: GrantFiled: November 23, 2021Date of Patent: November 28, 2023Assignees: CHEVRON U.S.A. INC., TRIAD NATIONAL SECURITY, LLCInventors: Bi-Zeng Zhan, Zunqing He, Hoon Taek Chung, Piotr Zelenay
-
Patent number: 11828171Abstract: A method is described for predicting and preventing wellbore interactions at wells that are near the injection well. The method includes receiving fiber optics data; performing object detection by detecting object-like events in the fiber optic data; and sending instructions to a hydraulic fracturing system based on the object detection. The method is executed by a computer system.Type: GrantFiled: March 12, 2021Date of Patent: November 28, 2023Assignee: Chevron U.S.A. Inc.Inventors: Ivan Lim Chen Ning, Tamas Nemeth, David C. Bartel, Zhishuai Zhang, Yunhui Tan, Joseph P. Stefani, James P. DiSiena, Dimitri Bevc, Kelly Hughes
-
Publication number: 20230373883Abstract: A process for producing renewable distillate-range hydrocarbons is provided. The process includes dehydrating a renewable C2-C6 alcohol feedstock to produce an olefin, oligomerizing the olefin the presence of a halometallate ionic liquid catalyst to produce an oligomer product and hydrogenating the oligomer product or fractions thereof to produce saturated distillate-range hydrocarbons.Type: ApplicationFiled: March 2, 2023Publication date: November 23, 2023Applicant: Chevron U.S.A. Inc.Inventors: Bong Kyu CHANG, Hye-Kyung Cho TIMKEN, Michelle K. Young
-
Publication number: 20230372912Abstract: Provided is a method of preparing a delaminated Al-SSZ-70 zeolite. The method combines direct hydrothermal synthesis with CTA+ cations and an imidazolium OSDA. A post-synthetic high shear mixing treatment is also preferred. In one embodiment, an Al-SSZ-70 zeolite seed is used, preferably with a Si/Al ratio of at least 50.Type: ApplicationFiled: May 23, 2023Publication date: November 23, 2023Applicants: Chevron U.S.A. Inc., The Regents of the University of CaliforniaInventors: Alexander KATZ, Abraham MARTINEZ, Le XU, Stacey I. ZONES
-
Patent number: 11822030Abstract: A method is described for seismic depth uncertainty analysis including receiving wavelet basis functions and cutoff thresholds and randomly perturbing wavelet coefficients in reduced wavelet space based on the wavelet basis functions and the cutoff thresholds to generate a plurality of random wavelet fields; receiving a reference model in a depth domain; transforming the plurality of random wavelet fields to the depth domain and combining them with the reference model to form candidate models; performing a hierarchical Bayesian modeling with Markov Chain Monte Carlo (MCMC) sampling methods using the candidate models as input to generate a plurality of realizations; and computing statistics of the plurality of realizations to estimate depth uncertainty. The method may be executed by a computer system.Type: GrantFiled: March 14, 2022Date of Patent: November 21, 2023Assignee: Chevron U.S.A. Inc.Inventors: Jinsong Chen, Huafeng Liu, Andrey Hanan Shabelansky, Cory James Hoelting, Min Yang, Ying Tan, Maisha Lara Amaru
-
Patent number: 11807610Abstract: A process for removing heavy polycyclic aromatic contaminants from a hydrocarbon stream using a quinolinium ionic liquid is described. The process includes contacting the hydrocarbon stream comprising the contaminant with a hydrocarbon-immiscible quinolinium ionic liquid to produce a mixture comprising the hydrocarbon and a hydrocarbon-immiscible quinolinium ionic liquid comprising at least a portion of the removed contaminant; and separating the mixture to produce a hydrocarbon effluent having a reduced level of the contaminant and a hydrocarbon-immiscible quinolinium ionic liquid effluent comprising the hydrocarbon-immiscible quinolinium ionic liquid comprising at least the portion of the removed contaminant.Type: GrantFiled: February 8, 2022Date of Patent: November 7, 2023Assignee: CHEVRON U.S.A. INC.Inventors: Saleh Ali Elomari, Huping Luo, Timi Pravin Singa
-
Publication number: 20230347324Abstract: Bulk catalysts comprised of nickel, molybdenum, tungsten and titanium and methods for synthesizing bulk catalysts are provided. The catalysts are useful for hydroprocessing, particularly hydrodesulfurization and hydrodenitrogenation, of hydrocarbon feedstocks.Type: ApplicationFiled: June 29, 2023Publication date: November 2, 2023Applicant: Chevron U.S.A. Inc.Inventors: Xiaoying OUYANG, Viorel DUMA, Alexander KUPERMAN, Ibrahim UCKUNG, Theodorus Ludovicus Michael MAESEN, Axel BRAIT, Charles WILSON
-
Publication number: 20230348798Abstract: An improved process and catalyst system for making a base oil product and for improving base oil cloud point and pour point characteristics, while also providing good product yields. The process and catalyst system generally involves the use of a layered catalyst system comprising an SSZ-91 catalyst and an SSZ-32X catalyst arranged to sequentially contact a hydrocarbon feedstock with both catalysts and thereby provide dewaxed base oil products.Type: ApplicationFiled: August 30, 2021Publication date: November 2, 2023Applicant: CHEVRON U.S.A. INC.Inventors: Subhasis BHATTACHARYA, Yihua ZHANG, Guan-Dao LEI, Ajit R. PRADHAN
-
Publication number: 20230348289Abstract: A process of making a silica-alumina composition having improved properties is provided. The process includes (a) mixing an aqueous solution of a silicon compound and an aqueous solution of an aluminum compound and an acid, while maintaining a pH of the mixed solution in a range of 1 to 3, and obtaining an acidified silica-alumina sol; (b) adding an aqueous solution of a base precipitating agent to the acidified silica-alumina sol to a final pH in a range of 5 to 8, and co-precipitating a silica-alumina slurry, wherein the base precipitating agent is selected from ammonium carbonate, ammonium bicarbonate, and any combination thereof; (c) optionally, hydrothermally aging the silica-alumina slurry to form a hydrothermally aged silica-alumina slurry; and (d) recovering a precipitate solid from the silica-alumina slurry or the hydrothermally aged silica-alumina slurry, wherein the precipitate solid comprises the silica-alumina composition.Type: ApplicationFiled: June 29, 2023Publication date: November 2, 2023Applicant: Chevron U.S.A. Inc.Inventors: Kandaswamy JOTHIMURUGESAN, Hye-Kyung TIMKEN
-
Publication number: 20230348342Abstract: Provided is a continuous process for converting waste plastic into recycle for polyethylene polymerization. The process comprises selecting waste plastics containing polyethylene and/or polypropylene and preparing a blend of petroleum and the selected plastic. The amount of plastic in the blend comprises no more than 20 wt. % of the blend. The blend is passed to a refinery hydrocracking unit. A liquid petroleum gas C3-C4 olefin/paraffin mixture, and optionally naphtha, is recovered from the hydrocracking unit and passed to a steam cracker to make ethylene. A heavy fraction can also be recovered from the hydrocracking unit and passed to an isomerization dewaxing unit to prepare base oil.Type: ApplicationFiled: March 30, 2023Publication date: November 2, 2023Applicant: Chevron U.S.A. Inc.Inventor: Hye-Kyung C. TIMKEN
-
Patent number: 11802236Abstract: Disclosed are compositions and methods for the pressure protection of existing wells during infill drilling operations.Type: GrantFiled: July 11, 2022Date of Patent: October 31, 2023Assignee: CHEVRON U.S.A. INC.Inventors: Ruth Ellen Hahn, Taimur Malik, Samiha Said Elsayed Morsy, Nabijan Nizamidin, Mohsen S. Tagavifar