Patents by Inventor Izhar Ahmad

Izhar Ahmad 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: 9411913
    Abstract: A method, apparatus and computer-readable medium for determining a lifespan of an electronic component in a downhole environment is disclosed. A first wear-out model is created that is related to a selected electronic component. A physical condition of the selected electronic component is examined at a selected examination time. The physical condition is generally due to the downhole environment in which the electronic component is disposed. A second wear-out model for the selected electronic component is created from the first wear-out model and the examined physical condition of the selected electronic component.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: August 9, 2016
    Assignee: BAKER HUGHES INCORPORATED
    Inventors: Sheng Zhan, Izhar Ahmad
  • Patent number: 9051814
    Abstract: A method and apparatus for estimating a time to failure of an electronic component used in a downhole environment is disclosed. A stress is applied to the electronic component to cause failure of a plurality of prognostic sensors associated with the electronic component, wherein the stress level at which a prognostic sensor fails is indicative of a stress level at which the electronic component fails. Failure times are obtained due to the applied stress for the plurality of prognostic sensors. A trend is determined from the obtained failure times of the prognostic sensors. The time of failure of the electronic component is estimated from the determined trend.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: June 9, 2015
    Assignee: Baker Hughes Incorporated
    Inventors: Sheng Zhan, Izhar Ahmad
  • Publication number: 20120084065
    Abstract: A method, apparatus and computer-readable medium for determining a lifespan of an electronic component in a downhole environment is disclosed. A first wear-out model is created that is related to a selected electronic component. A physical condition of the selected electronic component is examined at a selected examination time. The physical condition is generally due to the downhole environment in which the electronic component is disposed. A second wear-out model for the selected electronic component is created from the first wear-out model and the examined physical condition of the selected electronic component.
    Type: Application
    Filed: October 3, 2011
    Publication date: April 5, 2012
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Sheng Zhan, Izhar Ahmad
  • Publication number: 20120084008
    Abstract: A method and apparatus for estimating a time to failure of an electronic component used in a downhole environment is disclosed. A stress is applied to the electronic component to cause failure of a plurality of prognostic sensors associated with the electronic component, wherein the stress level at which a prognostic sensor fails is indicative of a stress level at which the electronic component fails. Failure times are obtained due to the applied stress for the plurality of prognostic sensors. A trend is determined from the obtained failure times of the prognostic sensors. The time of failure of the electronic component is estimated from the determined trend.
    Type: Application
    Filed: October 3, 2011
    Publication date: April 5, 2012
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Sheng Zhan, Izhar Ahmad
  • Patent number: 6798350
    Abstract: A method for two-way communication for controlling production from a formation having at least one producing well and a plurality of producing zones. In one embodiment, the method comprises installing a flow control device with a controller proximate each of the producing zones, where each controller has a predetermined communication address, and each controller is adapted to act as a repeater on command from a surface controller; connecting each controller to a transmission bus where the transmission bus is connected to the surface controller; transmitting a command message from the surface controller to a predetermined downhole controller, where the command message determines a predetermined path along the transmission bus according to a predetermined protocol; receiving the command message by the predetermined controller; and executing the command message to control the flow control device. Transmitting a response message back along the predetermined path.
    Type: Grant
    Filed: April 19, 2002
    Date of Patent: September 28, 2004
    Assignee: Baker Hughes Incorporated
    Inventors: Jorge O. Maxit, Izhar Ahmad, Don A. Hopmann, Dan Cousin, Terry A. Gibson
  • Publication number: 20020179303
    Abstract: A method for two-way communication for controlling production from a formation having at least one producing well and a plurality of producing zones. In one embodiment, the method comprises installing a flow control device with a controller proximate each of the producing zones, where each controller has a predetermined communication address, and each controller is adapted to act as a repeater on command from a surface controller; connecting each controller to a transmission bus where the transmission bus is connected to the surface controller; transmitting a command message from the surface controller to a predetermined downhole controller, where the command message determines a predetermined path along the transmission bus according to a predetermined protocol; receiving the command message by the predetermined controller; and executing the command message to control the flow control device. Transmitting a response message back along the predetermined path.
    Type: Application
    Filed: April 19, 2002
    Publication date: December 5, 2002
    Applicant: Baker Hughes Incorporated
    Inventors: Jorge O. Maxit, Izhar Ahmad, Don A. Hopmann, Dan Cousin, Terry A. Gibson
  • Patent number: 5705812
    Abstract: An apparatus and method for detecting the location of subsurface markers in a formation proximate to a borehole. The apparatus includes marker detectors in a housing having at least two housing sections attached in an initial orientation. The distance between the detectors is measured under controlled conditions with a calibration bar. The initial attached orientation between the housing sections is identified with a calibrator, and deviations from the initial attached orientation are identified by the calibrator after the housing sections are detached and reattached. The calibrator permits well site corrections to be made to the housing sections without recalibration. Gauges permit corrections for temperature and pressure fluctuations, and the corrected distances between the housing detectors is computed.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: January 6, 1998
    Assignee: Western Atlas International, Inc.
    Inventors: James E. Brewer, Richard R. Pemper, Izhar Ahmad, Randy Gold