Patents by Inventor Jeffrey W. Niazy

Jeffrey W. Niazy 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).

  • Choke control tuned by flow coefficient for controlled pressure drilling
    Patent number: 9995098
    Abstract: A computerized control is used in controlling a choke when drilling a wellbore with a drilling system. The computerized control obtains a measured value of a parameter in the drilling system and controls the parameter in the drilling system using the choke. The computerized control obtains indications of an error between a set point of the parameter and the measured value of the parameter in the drilling system, a flow coefficient character of the choke, and a current position of the choke. Based on these indications, the computerized control then determines a position adjustment for the choke and adjusting the parameter in the drilling system by applying the position adjustment to the choke.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: June 12, 2018
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: Jose D. Brana, Jeffrey W. Niazy
  • Choke Control Tuned by Flow Coefficient for Controlled Pressure Drilling
    Publication number: 20160102511
    Abstract: A computerized control is used in controlling a choke when drilling a wellbore with a drilling system. The computerized control obtains a measured value of a parameter in the drilling system and controls the parameter in the drilling system using the choke. The computerized control obtains indications of an error between a set point of the parameter and the measured value of the parameter in the drilling system, a flow coefficient character of the choke, and a current position of the choke. Based on these indications, the computerized control then determines a position adjustment for the choke and adjusting the parameter in the drilling system by applying the position adjustment to the choke.
    Type: Application
    Filed: October 6, 2015
    Publication date: April 14, 2016
    Inventors: Jose D. Brana, Jeffrey W. Niazy
  • Nitric oxide enhanced response circuit for gas analyzer
    Patent number: 6082177
    Abstract: An exhaust emissions analyzer for an automotive internal combustion engine has sensors for detecting constituents of the exhaust emissions, including a nitric oxide cell which receives the emissions and outputs an electrical signal indicative of nitric oxide in the emissions. An R-C circuit is interposed between the output of the nitric oxide cell and processing circuitry for enhancing the response time of the nitric oxide cell, reducing the rise and fall times of the cell output of signal. A temperature-responsive switching circuit disconnects the R-C enhancement circuit above a predetermined ambient temperature.
    Type: Grant
    Filed: September 10, 1998
    Date of Patent: July 4, 2000
    Assignee: Snap-on Tools Company
    Inventors: Jeffrey W. Niazy, Christiaan Hoede, Robert J. Capiga