Patents by Inventor Joseph P. Stefani
Joseph P. Stefani 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: 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
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Publication number: 20220290559Abstract: 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: ApplicationFiled: March 12, 2021Publication date: September 15, 2022Inventors: Ivan Lim Chen Ning, Tamas Nemeth, David C. Bartel, Zhishuai Zhang, Yunhui Tan, Joseph P. Stefani, James P. DiSiena, Dimitri Bevc, Kelly Hughes
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Patent number: 11150371Abstract: A method is described for seismic imaging including determination of reservoir stresses. The method may include the use of elastic full waveform inversion (FWI), 3rd-order elasticity, and finite-difference strain calculations. The method may be executed by a computer system.Type: GrantFiled: September 20, 2018Date of Patent: October 19, 2021Assignee: CHEVRON U.S.A. INC.Inventors: Uwe K. Albertin, Joseph P. Stefani, Andrey H. Shabelansky, Mark A. Meadows
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Patent number: 10386512Abstract: A method is described for creating a petro-elastic model including receiving, at a computer processor, well log data; computing in situ rock properties; calculating dry frame moduli for a range of porosities based on a rock physics model such as a modified critical porosity model; performing fluid substitutions and computing elastic properties by statistical sampling for the range of porosities; creating a petro-elastic model in a seismic domain; and identifying and producing target hydrocarbon reservoirs based on the petro-elastic model. The method may be executed by a computer system.Type: GrantFiled: August 3, 2017Date of Patent: August 20, 2019Assignee: Chevron U.S.A. Inc.Inventors: Prasenjit Roy, Kabilan Krishnamurthy, Christopher H. Skelt, Joseph P. Stefani, Dileep K. Tiwary
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Publication number: 20190086568Abstract: A method is described for seismic imaging including determination of reservoir stresses. The method may include the use of elastic full waveform inversion (FWI), 3rd-order elasticity, and finite-difference strain calculations. The method may be executed by a computer system.Type: ApplicationFiled: September 20, 2018Publication date: March 21, 2019Applicant: Chevron U.S.A. Inc.Inventors: Uwe K. Albertin, Joseph P. Stefani, Andrey H. Shabelansky, Mark A. Meadows
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Publication number: 20180038974Abstract: A method is described for creating a petro-elastic model including receiving, at a computer processor, well log data; computing in situ rock properties; calculating dry frame moduli for a range of porosities based on a rock physics model such as a modified critical porosity model; performing fluid substitutions and computing elastic properties by statistical sampling for the range of porosities; creating a petro-elastic model in a seismic domain; and identifying and producing target hydrocarbon reservoirs based on the petro-elastic model. The method may be executed by a computer system.Type: ApplicationFiled: August 3, 2017Publication date: February 8, 2018Inventors: Prasenjit ROY, Kabilan KRISHNAMURTHY, Christopher H. SKELT, Joseph P. STEFANI, Dileep K. TIWARY
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Patent number: 8494778Abstract: A computer system and a computer-implemented method for evaluating a geophysical model using a grid of points representing locations in a subsurface geological region are disclosed. The method includes storing a geophysical model of the subsurface geological region in a computer readable memory and defining, for the geophysical model, the grid of points representing the locations in the subsurface geological region. The grid of points comprise a plurality of points extending in at least one direction. The plurality of points are variably spaced apart in the at least one direction. The method further includes evaluating, by the computer, the geophysical model using the grid of points.Type: GrantFiled: October 5, 2009Date of Patent: July 23, 2013Assignee: Chevron U.S.A. Inc.Inventor: Joseph P. Stefani
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Publication number: 20110082645Abstract: A computer system and a computer-implemented method for evaluating a geophysical model using a grid of points representing locations in a subsurface geological region are disclosed. The method includes storing a geophysical model of the subsurface geological region in a computer readable memory and defining, for the geophysical model, the grid of points representing the locations in the subsurface geological region. The grid of points comprise a plurality of points extending in at least one direction. The plurality of points are variably spaced apart in the at least one direction. The method further includes evaluating, by the computer, the geophysical model using the grid of points.Type: ApplicationFiled: October 5, 2009Publication date: April 7, 2011Inventor: Joseph P. Stefani
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Patent number: 7679990Abstract: A method for obtaining seismic data is disclosed. A constellation of seismic energy sources is translated along a survey path. The seismic energy sources include a reference energy source and a satellite energy source. The reference energy source is activated and the satellite energy source is activated at a time delay relative to the activation of the reference energy source. This is repeated at each of the spaced apart activation locations along the survey path to generate a series of superposed wavefields. The time delay is varied between each of the spaced apart activation locations. Seismic data processing comprises sorting the traces into a common geometry domain and replicating the traces into multiple datasets associated with each particular energy source. Each trace is time adjusted in each replicated dataset in the common-geometry domain using the time delays associated with each particular source.Type: GrantFiled: December 6, 2004Date of Patent: March 16, 2010Assignee: Chevron U.S.A. Inc.Inventors: E. Frederic Herkenhoff, Joseph P. Stefani
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Patent number: 4903161Abstract: A voltage surge suppression circuit for a low voltage coaxial cable comprises a gas tube connected across the signal and shield conductors and an MOV connecting the shield conductor to a ground. In the case of a balance signal line comprising two conductors, a first gas tube connects one line to ground and a second gas tube is connected across both conductors. A third gas tube may connect the other conductor to ground in which case the second gas tube may be optional. The ground is preferably a ground associated with a power line voltage surge suppression means.Type: GrantFiled: January 19, 1988Date of Patent: February 20, 1990Assignee: General Electric CompanyInventors: Paul G. Huber, John J. Gizienski, Edward B. Miller, Joseph P. Stefani, Dewey L. Harris
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Patent number: 4739436Abstract: A voltage surge suppression circuit employs two series connected metal oxide varistors and a power interrupter to provide suppression of all modes of voltage surge while providing protection against failure of either metal oxide varistor. An indicator is provided to indicate the status of the circuit to the user.Type: GrantFiled: December 15, 1986Date of Patent: April 19, 1988Assignee: General Electric CompanyInventors: Joseph P. Stefani, Dewey L. Harris, Paul G. Huber
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Patent number: 4083448Abstract: A packaged article having a screw extending through the article is provided. The article packaged may be any article having a screw opening through it and having a screw for mounting the article into its normal place of use. In the package article of this invention the screw extends through the article and into a package to hold the article to the package. The package has a hole for receiving the screw and in this invention has also a threaded nut of polymer or pitch material bonded to the package. A method of forming a packaged article is also taught.Type: GrantFiled: June 27, 1975Date of Patent: April 11, 1978Assignee: General Electric CompanyInventors: Louis Zampini, Jr., Joseph P. Stefani
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Patent number: 4067169Abstract: A packaged article having a screw extending through the article is provided. The article packaged may be any article having a screw opening through it and having a screw for mounting the article into its normal place of use. In the package article of this invention the screw extends through the article and into a package to hold the article to the package. The package has a hole for receiving the screw and in this invention has also a threaded nut of polymer or pitch material bonded to the package. A method of forming a packaged article is also taught.Type: GrantFiled: March 17, 1977Date of Patent: January 10, 1978Assignee: General Electric CompanyInventors: Louis Zampini, Jr., Joseph P. Stefani
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Patent number: 3997820Abstract: A light dimmer product is provided having simpler construction and simpler assembly than prior art dimmers. Simplicity of construction is achieved by providing a printed circuit board and mounting all electrical leads from components to the board to permit a single soldering operation to solder all leads simultaneously. Simplicity of assembly is achieved by mounting portions other than current carrying portions to the mounting bracket of the dimmer product as a sub-assembly to be assembled to the housing. When assembled, the bracket support components by portions other than current carrying portions and the current carrying portions of these same components support the printed circuit board. The printed circuit board supports other components by their current carrying portions.Type: GrantFiled: December 11, 1974Date of Patent: December 14, 1976Assignee: General Electric CompanyInventor: Joseph P. Stefani
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Patent number: D257014Type: GrantFiled: October 16, 1978Date of Patent: September 23, 1980Assignee: General Electric CompanyInventors: Robert C. Cressman, Joseph P. Stefani