Patents by Inventor Peila Chen

Peila Chen 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).

  • Optimization technique for CO2-EOR miscibility management in an oil reservoir
    Patent number: 11802466
    Abstract: A method of recovering crude oil from a reservoir by: determining a depletion pressure for providing a lights-depleted crude oil comprising a reduced amount of light ends including methane, nitrogen, carbon dioxide (CO2), or a combination thereof and having a CO2 multi contact Minimum Miscibility Pressure (CO2-MMP) below a CO2-MMP of a native crude oil, wherein the native crude oil is crude oil extracted from the reservoir prior to primary oil recovery therefrom; depleting the pressure of the reservoir from an initial reservoir pressure to the determined depletion pressure, thus providing the lights-depleted crude oil; repressurizing the reservoir to an operating pressure for recovering the lights-depleted crude oil from the reservoir via carbon dioxide (CO2) injection; injecting CO2 into the reservoir via at least one injection well; and recovering at least a portion of the lights-depleted crude oil from the reservoir via at least one production well.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: October 31, 2023
    Assignee: UNIVERSITY OF HOUSTON SYSTEM
    Inventors: Ganesh C. Thakur, Peila Chen, Sriram Balasubramanian, Sushanta Bose
  • Optimization Technique for CO2-EOR Miscibility Management in an Oil Reservoir
    Publication number: 20210372246
    Abstract: A method of recovering crude oil from a reservoir by: determining a depletion pressure for providing a lights-depleted crude oil comprising a reduced amount of light ends including methane, nitrogen, carbon dioxide (CO2), or a combination thereof and having a CO2 multi contact Minimum Miscibility Pressure (CO2-MMP) below a CO2-MMP of a native crude oil, wherein the native crude oil is crude oil extracted from the reservoir prior to primary oil recovery therefrom; depleting the pressure of the reservoir from an initial reservoir pressure to the determined depletion pressure, thus providing the lights-depleted crude oil; repressurizing the reservoir to an operating pressure for recovering the lights-depleted crude oil from the reservoir via carbon dioxide (CO2) injection; injecting CO2 into the reservoir via at least one injection well; and recovering at least a portion of the lights-depleted crude oil from the reservoir via at least one production well.
    Type: Application
    Filed: October 1, 2019
    Publication date: December 2, 2021
    Applicant: University of Houston System
    Inventors: Ganesh C. Thakur, Peila Chen, Sriram Balasubramanian, Sushanta Bose