Patents by Inventor Heri Tanjung

Heri Tanjung 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).

  • Gas pressure measurement within cased wellbore systems and methods
    Patent number: 11808138
    Abstract: A method for determining the gas pressure may include generating, via a downhole tool, neutron radiation in a cased wellbore of a geological formation and measuring a response to the neutron radiation. The method may also include determining, via a processor, at least one of a sigma, a neutron porosity, or a fast-neutron cross-section of the formation. Additionally, an equation of state of the gas may be estimated, and a gas pressure of the gas may be determined by solving a relationship, based at least in part on the equation of state, between the gas pressure and the at least one of the sigma, the neutron porosity, or the fast-neutron cross-section.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: November 7, 2023
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Yevgeniy Karpekin, Heri Tanjung, Ashish Datey, Gustavo Dip, David Rose
  • GAS PRESSURE MEASUREMENT WITHIN CASED WELLBORE SYSTEMS AND METHODS
    Publication number: 20210318461
    Abstract: A method for determining the gas pressure may include generating, via a downhole tool, neutron radiation in a cased wellbore of a geological formation and measuring a response to the neutron radiation. The method may also include determining, via a processor, at least one of a sigma, a neutron porosity, or a fast-neutron cross-section of the formation. Additionally, an equation of state of the gas may be estimated, and a gas pressure of the gas may be determined by solving a relationship, based at least in part on the equation of state, between the gas pressure and the at least one of the sigma, the neutron porosity, or the fast-neutron cross-section.
    Type: Application
    Filed: October 24, 2019
    Publication date: October 14, 2021
    Inventors: Yevgeniy Karpekin, Heri Tanjung, Ashish Datey, Gustavo Dip, David Rose