Patents by Inventor Rashobh Rajan Sobhana

Rashobh Rajan Sobhana 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).

  • Publication number: 20200300076
    Abstract: A method may comprise obtaining, during drilling operations within a wellbore, two-dimensional accelerometer data with an accelerometer on a rotating downhole tool, determining a radial offset of the accelerometer based on the two-dimensional accelerometer data, and determining a centripetal acceleration of the accelerometer based on the two-dimensional accelerometer data. A system may comprise one or more x-axis accelerometers disposed on a bottom hole assembly, one or more y-axis accelerometers disposed on the bottom hole assembly, an analog to digital converter, wherein the analog to digital converter converts an analog signal from the one or more x-axis accelerometers and the one or more y-axis accelerometers to a digital signal, and a computing subsystem.
    Type: Application
    Filed: November 29, 2018
    Publication date: September 24, 2020
    Applicant: Halliburton Energy Services, Inc.
    Inventor: Rashobh Rajan Sobhana
  • Publication number: 20200300078
    Abstract: A method may comprise penetrating a subterranean formation with a bottom hole assembly, determining a revolutions-per-minute (RPM) measurement based on a zero crossing of sinusoidal magnetometer data, determining a gyroscope bias from gyroscope data using the determined RPM measurement, determining bias compensated gyroscope data by subtracting the determined gyroscope bias from the gyroscope data, determining an angular displacement measurement using the bias compensated gyroscope data, determining a selected tool-face measurement, computing a weighted sum of the selected tool-face measurement with the determined bias compensated gyroscope data, and determining a gravitational tool-face measurement from the computed weighted sum. A system may comprise a drilling rig, a pipe string attached to the drilling rig, a bottom hole assembly attached to the pipe string, wherein the bottom hole assembly comprises at least one sensor, a drill bit, and a computing subsystem connected to the at least one sensor.
    Type: Application
    Filed: November 29, 2018
    Publication date: September 24, 2020
    Applicant: Halliburton Energy Services, Inc.
    Inventor: Rashobh Rajan Sobhana
  • Publication number: 20200270980
    Abstract: A method may comprise measuring during a survey operation a gravitational field data using a survey accelerometer and magnetic field data using a survey magnetometer and determining during a drilling operation an azimuth of a wellbore based on the gravitational field data and the magnetic field data obtained during the survey operation. A system may comprise a drilling rig; a pipe string attached to the drilling rig; a bottom hole assembly attached to the pipe string, wherein the bottom hole assembly comprises at least one sensor; a drill bit, wherein the at least one sensor measure a revolutions-per-minute (RPM) of the drill bit; and a computing subsystem.
    Type: Application
    Filed: November 29, 2018
    Publication date: August 27, 2020
    Applicant: Halliburton Energy Services, Inc.
    Inventor: Rashobh Rajan Sobhana