Patents by Inventor Xundan Shi

Xundan Shi 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).

  • FLUID MODELING WITH NANO-SCALE PORE SIZE EFFECTS FOR A RESERVOIR
    Publication number: 20230069445
    Abstract: An equation state with a mixing rule that captures a multi-component layering within nanopores may be used to model (1) fluid mixture in the nanopores of the reservoir and (2) movement of fluid between the nanopores and large pores of the reservoir. Such modeling of fluid behavior in large pores and nanopores of the reservoir may enable more accurate simulation of the reservoir (e.g., for hydrocarbon recovery).
    Type: Application
    Filed: August 31, 2021
    Publication date: March 2, 2023
    Inventors: Sheng Luo, Dengen Zhou, Shihao Wang, Xundan Shi
  • Process for optimized chemical enhanced recovery
    Patent number: 11567058
    Abstract: A method for simulating a microemulsion system in a chemical enhanced oil recovery process is disclosed. The method includes receiving a geological model of a subsurface reservoir that defines a grid having a plurality of cells, determining a surfactant concentration for each cell based on a volume of surfactant and a volume of water within the cell and independently from a volume of oil in the cell, and simulating fluids flowing in the subsurface reservoir. Results from simulation can be used to optimize a chemical enhanced oil recovery process in a subsurface reservoir.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: January 31, 2023
    Assignee: Chevron U.S.A. Inc.
    Inventors: Xundan Shi, Choongyong Han, Yih-Bor Chang, Christian Wolfsteiner, Baris Guyaguler
  • METHOD FOR REDUCING UNPHYSICAL SOLUTIONS IN CHEMICAL ENHANCED OIL RECOVERY SIMULATIONS
    Publication number: 20190094199
    Abstract: A method for simulating a microemulsion system in a chemical enhanced oil recovery process is disclosed. The method includes receiving a geological model of a subsurface reservoir that defines a grid having a plurality of cells, determining a surfactant concentration for each cell based on a volume of surfactant and a volume of water within the cell and independently from a volume of oil in the cell, and simulating fluids flowing in the subsurface reservoir. Results from simulation can be used to optimize a chemical enhanced oil recovery process in a subsurface reservoir.
    Type: Application
    Filed: September 21, 2018
    Publication date: March 28, 2019
    Applicant: Chevron U.S.A. Inc.
    Inventors: Xundan Shi, Choongyong Han, Yih-Bor Chang, Christian Wolfsteiner, Baris Guyaguler