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).

  • Patent number: 11828171
    Abstract: 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: Grant
    Filed: March 12, 2021
    Date of Patent: November 28, 2023
    Assignee: 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: 20220290559
    Abstract: 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: Application
    Filed: March 12, 2021
    Publication date: September 15, 2022
    Inventors: Ivan Lim Chen Ning, Tamas Nemeth, David C. Bartel, Zhishuai Zhang, Yunhui Tan, Joseph P. Stefani, James P. DiSiena, Dimitri Bevc, Kelly Hughes
  • Patent number: 11150371
    Abstract: 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: Grant
    Filed: September 20, 2018
    Date of Patent: October 19, 2021
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Uwe K. Albertin, Joseph P. Stefani, Andrey H. Shabelansky, Mark A. Meadows
  • Patent number: 10386512
    Abstract: 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: Grant
    Filed: August 3, 2017
    Date of Patent: August 20, 2019
    Assignee: Chevron U.S.A. Inc.
    Inventors: Prasenjit Roy, Kabilan Krishnamurthy, Christopher H. Skelt, Joseph P. Stefani, Dileep K. Tiwary
  • Publication number: 20190086568
    Abstract: 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: Application
    Filed: September 20, 2018
    Publication date: March 21, 2019
    Applicant: Chevron U.S.A. Inc.
    Inventors: Uwe K. Albertin, Joseph P. Stefani, Andrey H. Shabelansky, Mark A. Meadows
  • Publication number: 20180038974
    Abstract: 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: Application
    Filed: August 3, 2017
    Publication date: February 8, 2018
    Inventors: Prasenjit ROY, Kabilan KRISHNAMURTHY, Christopher H. SKELT, Joseph P. STEFANI, Dileep K. TIWARY
  • Patent number: 8494778
    Abstract: 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: Grant
    Filed: October 5, 2009
    Date of Patent: July 23, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventor: Joseph P. Stefani
  • Publication number: 20110082645
    Abstract: 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: Application
    Filed: October 5, 2009
    Publication date: April 7, 2011
    Inventor: Joseph P. Stefani
  • Patent number: 7679990
    Abstract: 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: Grant
    Filed: December 6, 2004
    Date of Patent: March 16, 2010
    Assignee: Chevron U.S.A. Inc.
    Inventors: E. Frederic Herkenhoff, Joseph P. Stefani
  • Patent number: 4903161
    Abstract: 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: Grant
    Filed: January 19, 1988
    Date of Patent: February 20, 1990
    Assignee: General Electric Company
    Inventors: Paul G. Huber, John J. Gizienski, Edward B. Miller, Joseph P. Stefani, Dewey L. Harris
  • Patent number: 4739436
    Abstract: 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: Grant
    Filed: December 15, 1986
    Date of Patent: April 19, 1988
    Assignee: General Electric Company
    Inventors: Joseph P. Stefani, Dewey L. Harris, Paul G. Huber
  • Patent number: 4083448
    Abstract: 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: Grant
    Filed: June 27, 1975
    Date of Patent: April 11, 1978
    Assignee: General Electric Company
    Inventors: Louis Zampini, Jr., Joseph P. Stefani
  • Patent number: 4067169
    Abstract: 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: Grant
    Filed: March 17, 1977
    Date of Patent: January 10, 1978
    Assignee: General Electric Company
    Inventors: Louis Zampini, Jr., Joseph P. Stefani
  • Patent number: 3997820
    Abstract: 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: Grant
    Filed: December 11, 1974
    Date of Patent: December 14, 1976
    Assignee: General Electric Company
    Inventor: Joseph P. Stefani
  • Patent number: D257014
    Type: Grant
    Filed: October 16, 1978
    Date of Patent: September 23, 1980
    Assignee: General Electric Company
    Inventors: Robert C. Cressman, Joseph P. Stefani