Patents by Inventor Mahmoud ELSAYED
Mahmoud ELSAYED has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11209366Abstract: A fluorescent nanocomposite which includes a thallium doped gadolinium chalcogenide having formula TlxGd1-xY, wherein x is 0.01 to 0.1, and Y is selected from the group consisting of S, Se, or Te, and a benzothiazolium salt bound to a surface of the thallium doped gadolinium chalcogenide. A method of detecting antimony ions in a fluid sample whereby the fluid sample is contacted with the fluorescent nanocomposite to form a mixture, and a fluorescence emission profile of the mixture is measured to determine a presence or absence of antimony ions in the fluid sample, wherein a reduction in intensity of a fluorescence emissions peak associated with the fluorescent nanocomposite indicates the presence of antimony ions in the fluid sample.Type: GrantFiled: August 23, 2021Date of Patent: December 28, 2021Assignee: King Abdulaziz UniversityInventors: Waleed Elsayed Mahmoud Elsayed, Ahmed Abdullah Salem Al-Ghamdi, Yusuf Abdulaziz Al-Turki
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Patent number: 11209365Abstract: A fluorescent nanocomposite which includes a thallium doped gadolinium chalcogenide having formula TlxGd1-xY, wherein x is 0.01 to 0.1, and Y is selected from the group consisting of S, Se, or Te, and a benzothiazolium salt bound to a surface of the thallium doped gadolinium chalcogenide. A method of detecting antimony ions in a fluid sample whereby the fluid sample is contacted with the fluorescent nanocomposite to form a mixture, and a fluorescence emission profile of the mixture is measured to determine a presence or absence of antimony ions in the fluid sample, wherein a reduction in intensity of a fluorescence emissions peak associated with the fluorescent nanocomposite indicates the presence of antimony ions in the fluid sample.Type: GrantFiled: August 20, 2021Date of Patent: December 28, 2021Assignee: King Abdulaziz UniversityInventors: Waleed Elsayed Mahmoud Elsayed, Ahmed Abdullah Salem Al-Ghamdi, Yusuf Abdulaziz Al-Turki
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Patent number: 11203529Abstract: Methods of forming graphene may include reacting a dispersed mixture, comprising fly ash, a charged heteroaromatic compound, particularly a pyridinium compound, such as a 1-(4-pyridyl)-pyridinium salt, and a solvent, particularly an alcohol, such as ethanol, with a polymeric oxidizing agent, preferably polymer-supported pyridinium chlorochromate, to form a second mixture; and contacting the second mixture at a temperature of 120 to 180° C. with a gas stream comprising at least 0.1 vol. % CH4 and at least 10 vol. % H2 to form graphene on the fly ash. Methods of managing waste may comprise using fly ash waste to produce graphene. Devices for implementing such methods may involve steel cylindrical reaction vessels including a cover through which a valve-stoppable pipe is fed, which reaction vessel is at least partially surrounded by a heating device, and suitable for handling solvent and fly ash, as well as for receiving gas inflow through the pipe.Type: GrantFiled: July 21, 2021Date of Patent: December 21, 2021Assignee: King Abdulaziz UniversityInventors: Waleed Elsayed Mahmoud Elsayed, Ahmed Abdullah Salem Al-Ghamdi, Yusuf Abdulaziz Al-Turki
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Publication number: 20210381974Abstract: A fluorescent nanocomposite which includes a thallium doped gadolinium chalcogenide having formula TlxGd1-xY, wherein x is 0.01 to 0.1, and Y is selected from the group consisting of S, Se, or Te, and a benzothiazolium salt bound to a surface of the thallium doped gadolinium chalcogenide. A method of detecting antimony ions in a fluid sample whereby the fluid sample is contacted with the fluorescent nanocomposite to form a mixture, and a fluorescence emission profile of the mixture is measured to determine a presence or absence of antimony ions in the fluid sample, wherein a reduction in intensity of a fluorescence emissions peak associated with the fluorescent nanocomposite indicates the presence of antimony ions in the fluid sample.Type: ApplicationFiled: August 23, 2021Publication date: December 9, 2021Applicant: King Abdulaziz UniversityInventors: Waleed Elsayed Mahmoud ELSAYED, Ahmed Abdullah Salem AL-GHAMDI, Yusuf Abdulaziz AL-TURKI
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Publication number: 20210381973Abstract: A fluorescent nanocomposite which includes a thallium doped gadolinium chalcogenide having formula TlxGd1-xY, wherein x is 0.01 to 0.1, and Y is selected from the group consisting of S, Se, or Te, and a benzothiazolium salt bound to a surface of the thallium doped gadolinium chalcogenide. A method of detecting antimony ions in a fluid sample whereby the fluid sample is contacted with the fluorescent nanocomposite to form a mixture, and a fluorescence emission profile of the mixture is measured to determine a presence or absence of antimony ions in the fluid sample, wherein a reduction in intensity of a fluorescence emissions peak associated with the fluorescent nanocomposite indicates the presence of antimony ions in the fluid sample.Type: ApplicationFiled: August 20, 2021Publication date: December 9, 2021Applicant: King Abdulaziz UniversityInventors: Waleed Elsayed Mahmoud ELSAYED, Ahmed Abdullah Salem AL-GHAMDI, Yusuf Abdulaziz AL-TURKI
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Publication number: 20210372954Abstract: A method for predicting formation permeability by measuring diffusional tortuosity in several directions by pulse gradient NMR. The method comprises evaluating an anisotropic diffusion coefficient by pulsed gradient NMR, determining diffusional tortuosity from the restricted diffusion data, supplementing the NMR results with resistivity and sonic logging data, measuring anisotropic tortuosity and porosity by resistivity and sonic data and combining all components in a single fitting model. The 11-coefficient model is trained to recognize the true values of permeability by comparing the real oil permeabilities measured in a library of oil-carrying rock cores with the NMR, resistivity and sonic correlates. The fitting coefficients are extracted by minimizing the discrepancy between the laboratory measured permeabilities and the predicted values combining all rapid logging information components with the agreement-maximizing weights.Type: ApplicationFiled: August 16, 2021Publication date: December 2, 2021Applicant: King Fahd University of Petroleum and MineralsInventors: Mahmoud ELSAYED, Ammar EL-HUSSEINY, Mohamed MAHMOUD, Karem AL-GARADI
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Publication number: 20210372956Abstract: A method for predicting formation permeability by measuring diffusional tortuosity in several directions by pulse gradient NMR. The method comprises evaluating an anisotropic diffusion coefficient by pulsed gradient NMR, determining diffusional tortuosity from the restricted diffusion data, supplementing the NMR results with resistivity and sonic logging data, measuring anisotropic tortuosity and porosity by resistivity and sonic data and combining all components in a single fitting model. The 11-coefficient model is trained to recognize the true values of permeability by comparing the real oil permeabilities measured in a library of oil-carrying rock cores with the NMR, resistivity and sonic correlates. The fitting coefficients are extracted by minimizing the discrepancy between the laboratory measured permeabilities and the predicted values combining all rapid logging information components with the agreement-maximizing weights.Type: ApplicationFiled: August 16, 2021Publication date: December 2, 2021Applicant: King Fahd University of Petroleum and MineralsInventors: Mahmoud ELSAYED, Ammar EL-HUSSEINY, Mohamed MAHMOUD, Karem AL-GARADI
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Publication number: 20210372955Abstract: A method for predicting formation permeability by measuring diffusional tortuosity in several directions by pulse gradient NMR. The method comprises evaluating an anisotropic diffusion coefficient by pulsed gradient NMR, determining diffusional tortuosity from the restricted diffusion data, supplementing the NMR results with resistivity and sonic logging data, measuring anisotropic tortuosity and porosity by resistivity and sonic data and combining all components in a single fitting model. The 11-coefficient model is trained to recognize the true values of permeability by comparing the real oil permeabilities measured in a library of oil-carrying rock cores with the NMR, resistivity and sonic correlates. The fitting coefficients are extracted by minimizing the discrepancy between the laboratory measured permeabilities and the predicted values combining all rapid logging information components with the agreement-maximizing weights.Type: ApplicationFiled: August 16, 2021Publication date: December 2, 2021Applicant: King Fahd University of Petroleum and MineralsInventors: Mahmoud ELSAYED, Ammar EL-HUSSEINY, Mohamed MAHMOUD, Karem AL-GARADI
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Patent number: 11180372Abstract: Methods of forming graphene may include reacting a dispersed mixture, comprising fly ash, a charged heteroaromatic compound, particularly a pyridinium compound, such as a 1-(4-pyridyl)-pyridinium salt, and a solvent, particularly an alcohol, such as ethanol, with a polymeric oxidizing agent, preferably polymer-supported pyridinium chlorochromate, to form a second mixture; and contacting the second mixture at a temperature of 120 to 180° C. with a gas stream comprising at least 0.1 vol. % CH4 and at least 10 vol. % H2 to form graphene on the fly ash. Methods of managing waste may comprise using fly ash waste to produce graphene. Devices for implementing such methods may involve steel cylindrical reaction vessels including a cover through which a valve-stoppable pipe is fed, which reaction vessel is at least partially surrounded by a heating device, and suitable for handling solvent and fly ash, as well as for receiving gas inflow through the pipe.Type: GrantFiled: June 28, 2021Date of Patent: November 23, 2021Assignee: King Abdulaziz UniversityInventors: Waleed Elsayed Mahmoud Elsayed, Ahmed Abdullah Salem Al-Ghamdi, Yusuf Abdulaziz Al-Turki
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Publication number: 20210347641Abstract: Methods of forming graphene may include reacting a dispersed mixture, comprising fly ash, a charged heteroaromatic compound, particularly a pyridinium compound, such as a 1-(4-pyridyl)-pyridinium salt, and a solvent, particularly an alcohol, such as ethanol, with a polymeric oxidizing agent, preferably polymer-supported pyridinium chlorochromate, to form a second mixture; and contacting the second mixture at a temperature of 120 to 180° C. with a gas stream comprising at least 0.1 vol. % CH4 and at least 10 vol. % H2 to form graphene on the fly ash. Methods of managing waste may comprise using fly ash waste to produce graphene. Devices for implementing such methods may involve steel cylindrical reaction vessels including a cover through which a valve-stoppable pipe is fed, which reaction vessel is at least partially surrounded by a heating device, and suitable for handling solvent and fly ash, as well as for receiving gas inflow through the pipe.Type: ApplicationFiled: July 21, 2021Publication date: November 11, 2021Applicant: King Abdulaziz UniversityInventors: Waleed Elsayed Mahmoud ELSAYED, Ahmed Abdullah Salem Al-Ghamdi, Yusuf Abdulaziz Al-Turki
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Publication number: 20210341388Abstract: A fluorescent nanocomposite which includes a thallium doped gadolinium chalcogenide having formula TlxGd1-xY, wherein x is 0.01 to 0.1, and Y is selected from the group consisting of S, Se, or Te, and a benzothiazolium salt bound to a surface of the thallium doped gadolinium chalcogenide. A method of detecting antimony ions in a fluid sample whereby the fluid sample is contacted with the fluorescent nanocomposite to form a mixture, and a fluorescence emission profile of the mixture is measured to determine a presence or absence of antimony ions in the fluid sample, wherein a reduction in intensity of a fluorescence emissions peak associated with the fluorescent nanocomposite indicates the presence of antimony ions in the fluid sample.Type: ApplicationFiled: July 16, 2021Publication date: November 4, 2021Applicant: King Abdulaziz UniversityInventors: Waleed Elsayed Mahmoud ELSAYED, Ahmed Abdullah Salem Al-Ghamdi, Yusuf Abdulaziz Al-Turki
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Publication number: 20210323828Abstract: Methods of forming graphene may include reacting a dispersed mixture, comprising fly ash, a charged heteroaromatic compound, particularly a pyridinium compound, such as a 1-(4-pyridyl)-pyridinium salt, and a solvent, particularly an alcohol, such as ethanol, with a polymeric oxidizing agent, preferably polymer-supported pyridinium chlorochromate, to form a second mixture; and contacting the second mixture at a temperature of 120 to 180° C. with a gas stream comprising at least 0.1 vol. % CH4 and at least 10 vol. % H2 to form graphene on the fly ash. Methods of managing waste may comprise using fly ash waste to produce graphene. Devices for implementing such methods may involve steel cylindrical reaction vessels including a cover through which a valve-stoppable pipe is fed, which reaction vessel is at least partially surrounded by a heating device, and suitable for handling solvent and fly ash, as well as for receiving gas inflow through the pipe.Type: ApplicationFiled: June 28, 2021Publication date: October 21, 2021Applicant: King Abdulaziz UniversityInventors: Waleed Elsayed Mahmoud ELSAYED, Ahmed Abdullah Salem AL-GHAMDI, Yusuf Abdulaziz AL-TURKI
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Patent number: 11143592Abstract: A fluorescent nanocomposite which includes a thallium doped gadolinium chalcogenide having formula TlxGd1-xY, wherein x is 0.01 to 0.1, and Y is selected from the group consisting of S, Se, or Te, and a benzothiazolium salt bound to a surface of the thallium doped gadolinium chalcogenide. A method of detecting antimony ions in a fluid sample whereby the fluid sample is contacted with the fluorescent nanocomposite to form a mixture, and a fluorescence emission profile of the mixture is measured to determine a presence or absence of antimony ions in the fluid sample, wherein a reduction in intensity of a fluorescence emissions peak associated with the fluorescent nanocomposite indicates the presence of antimony ions in the fluid sample.Type: GrantFiled: August 23, 2019Date of Patent: October 12, 2021Assignee: King Abdulaziz UniversityInventors: Waleed Elsayed Mahmoud Elsayed, Ahmed Abdullah Salem Al-Ghamdi, Yusuf Abdulaziz Al-Turki
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Patent number: 11143607Abstract: A method for predicting formation permeability by measuring diffusional tortuosity in several directions by pulse gradient NMR. The method comprises evaluating an anisotropic diffusion coefficient by pulsed gradient NMR, determining diffusional tortuosity from the restricted diffusion data, supplementing the NMR results with resistivity and sonic logging data, measuring anisotropic tortuosity and porosity by resistivity and sonic data and combining all components in a single fitting model. The 11-coefficient model is trained to recognize the true values of permeability by comparing the real oil permeabilities measured in a library of oil-carrying rock cores with the NMR, resistivity and sonic correlates. The fitting coefficients are extracted by minimizing the discrepancy between the laboratory measured permeabilities and the predicted values combining all rapid logging information components with the agreement-maximizing weights.Type: GrantFiled: March 13, 2020Date of Patent: October 12, 2021Assignee: King Fahd University of Petroleum and MineralsInventors: Mahmoud Elsayed, Ammar El-Husseiny, Mohamed Mahmoud, Karem Al-Garadi
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Patent number: 11131186Abstract: A method for rapid wettability evaluation during exploratory drilling of a hydrocarbon. The method include pre-saturation of the sample by a brine, measuring the bulk brine's T2 NMR relaxation parameter, expelling the brine by oil in the sample, measuring the oil's bulk and pore T2 NMR relaxation parameter, measuring the brine's non-reducible content and T2 NMR relaxation parameter of water in the presence of dominant oil content, expelling the oil by the brine and measuring the T2 NMR relaxation parameter of the irreducible oil content in the dominant brine. The measurements are combined in the index: I=[(T2WB?T2WIOIRR)/T2WB]?[(T2OB?T2OIWIRR)/T2OB], where WB is water bulk, OB is oil bulk, WIOIRR—injected pore water at the irreducible oil content, OIWIRR—injected pore oil at the irreducible water content.Type: GrantFiled: March 4, 2020Date of Patent: September 28, 2021Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Karem Al-Garadi, Ammar El-Husseiny, Mohamed Mahmoud, Mahmoud Elsayed
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Publication number: 20210285902Abstract: A method for predicting formation permeability by measuring diffusional tortuosity in several directions by pulse gradient NMR. The method comprises evaluating an anisotropic diffusion coefficient by pulsed gradient NMR, determining diffusional tortuosity from the restricted diffusion data, supplementing the NMR results with resistivity and sonic logging data, measuring anisotropic tortuosity and porosity by resistivity and sonic data and combining all components in a single fitting model. The 11-coefficient model is trained to recognize the true values of permeability by comparing the real oil permeabilities measured in a library of oil-carrying rock cores with the NMR, resistivity and sonic correlates. The fitting coefficients are extracted by minimizing the discrepancy between the laboratory measured permeabilities and the predicted values combining all rapid logging information components with the agreement-maximizing weights.Type: ApplicationFiled: March 13, 2020Publication date: September 16, 2021Applicant: King Fahd University of Petroleum and MineralsInventors: Mahmoud ELSAYED, Ammar EL-HUSSEINY, Mohamed MAHMOUD, Karem AL-GARADI
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Patent number: 11111149Abstract: Methods of forming graphene may include reacting a dispersed mixture, comprising fly ash, a charged heteroaromatic compound, particularly a pyridinium compound, such as a 1-(4-pyridyl)-pyridinium salt, and a solvent, particularly an alcohol, such as ethanol, with a polymeric oxidizing agent, preferably polymer-supported pyridinium chlorochromate, to form a second mixture; and contacting the second mixture at a temperature of 120 to 180° C. with a gas stream comprising at least 0.1 vol. % CH4 and at least 10 vol. % H2 to form graphene on the fly ash. Methods of managing waste may comprise using fly ash waste to produce graphene. Devices for implementing such methods may involve steel cylindrical reaction vessels including a cover through which a valve-stoppable pipe is fed, which reaction vessel is at least partially surrounded by a heating device, and suitable for handling solvent and fly ash, as well as for receiving gas inflow through the pipe.Type: GrantFiled: April 26, 2021Date of Patent: September 7, 2021Assignee: King Abdulaziz UniversityInventors: Waleed Elsayed Mahmoud Elsayed, Ahmed Abdullah Salem Al-Ghamdi, Yusuf Abdulaziz Al-Turki
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Patent number: 11113281Abstract: New methods to represent variables as parts of the classical truth table lead to complete evaluation methods that generate a compiled, efficient version of logical expressions. The new methods are suitable for use in, e.g., relational database applications in which both, efficient query times as well as logical completeness and consistency are required in the context of general constraint treatments. Input/output operations remain linear in the length of the input character strings regardless of the complexity of the logical theory. A new processing method of formulas is described as the basis for the efficiency increase. In order to find a specific truth-value, pattern trees are used representing the extension of the logical theory.Type: GrantFiled: October 14, 2016Date of Patent: September 7, 2021Inventor: Elnaserledinellah Mahmoud Elsayed Abdelwahab
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Publication number: 20210246029Abstract: Methods of forming graphene may include reacting a dispersed mixture, comprising fly ash, a charged heteroaromatic compound, particularly a pyridinium compound, such as a 1-(4-pyridyl)-pyridinium salt, and a solvent, particularly an alcohol, such as ethanol, with a polymeric oxidizing agent, preferably polymer-supported pyridinium chlorochromate, to form a second mixture; and contacting the second mixture at a temperature of 120 to 180° C. with a gas stream comprising at least 0.1 vol. % CH4 and at least 10 vol. % H2 to form graphene on the fly ash. Methods of managing waste may comprise using fly ash waste to produce graphene. Devices for implementing such methods may involve steel cylindrical reaction vessels including a cover through which a valve-stoppable pipe is fed, which reaction vessel is at least partially surrounded by a heating device, and suitable for handling solvent and fly ash, as well as for receiving gas inflow through the pipe.Type: ApplicationFiled: April 26, 2021Publication date: August 12, 2021Applicant: King Abdulaziz UniversityInventors: Waleed Elsayed Mahmoud ELSAYED, Ahmed Abdullah Salem AL-GHAMDI, Yusuf Abdulaziz AL-TURKI
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Publication number: 20210238998Abstract: A method for assessing an optimal acid injection rate in the process of hydrocarbon formation stimulation. The method comprises evaluating an anisotropic diffusion coefficient by pulsed gradient NMR, introduction of a semi-empirical correction based on comparison of the downhole conditions with the library of laboratory experiments where such corrections were measured, extrapolation of the library data to the real downhole conditions. The improved values of the diffusion coefficients are applied in determining wormhole regime conditions that are optimal in terms of acid consumption per a unit of stimulated yield of the hydrocarbon.Type: ApplicationFiled: February 3, 2020Publication date: August 5, 2021Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Mahmoud ELSAYED, Mohamed MAHMOUD, Ammar EL-HUSSEINY, Muhammad Shahzad KAMAL, Karem AL-GARADI