Patents by Inventor Yifu Long

Yifu Long 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).

  • Re-crosslinkable particle for conformance control and temporary plugging
    Patent number: 12247156
    Abstract: The present invention generally relates to the composition of particle gels for conformance control, well drilling and well treatments. More particularly, this invention relates to swellable polymer particle gels that can re-crosslink, i.e., reassociate and self-heal, at subterranean conditions. These particle gels can be deployed to improve the conformance of water flooding of especially matrix bypass events (MBEs), that are also known as void space conduits. Moreover, these particle gels can be deployed for controlling the water production and increasing of petroleum recovery. The inventive particles can also be deployed as diverter for well stimulation.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: March 11, 2025
    Assignee: The Curators of the University of Missouri
    Inventors: Yifu Long, Bowen Yu, Baojun Bai, Thomas Schuman
  • RE-CROSSLINKABLE PARTICLE FOR CONFORMANCE CONTROL AND TEMPORARY PLUGGING
    Publication number: 20230055352
    Abstract: The present invention generally relates to the composition of particle gels for conformance control, well drilling and well treatments. More particularly, this invention relates to swellable polymer particle gels that can re-crosslink, i.e., reassociate and self-heal, at subterranean conditions. These particle gels can be deployed to improve the conformance of water flooding of especially matrix bypass events (MBEs), that are also known as void space conduits. Moreover, these particle gels can be deployed for controlling the water production and increasing of petroleum recovery. The inventive particles can also be deployed as diverter for well stimulation.
    Type: Application
    Filed: January 10, 2020
    Publication date: February 23, 2023
    Inventors: Yifu Long, Bowen Yu, Baojun Bai, Thomas Schuman
  • Re-crosslinking particle gel for COconformance control and COleakage blocking
    Patent number: 11214729
    Abstract: The present invention generally relates to the composition of particle gels for CO2-EOR and CO2 storage. More particularly, CO2 resistant particle gels are provided that can re-crosslink at subterranean conditions. These particle gels can be deployed to improve the conformance of CO2 flooding, CO2 huff-puff, or Water-Alternative-Gas (WAG). The applications may also involve CO2 storage, such as the blocking of CO2 leakage and similar CO2 processing.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: January 4, 2022
    Assignee: The Curators of the University of Missouri
    Inventors: Yifu Long, Baojun Bai, Thomas P. Schuman
  • RE-CROSSLINKING PARTICLE GEL FOR CO2 CONFORMANCE CONTROL AND CO2 LEAKAGE BLOCKING
    Publication number: 20200071601
    Abstract: The present invention generally relates to the composition of particle gels for CO2-EOR and CO2 storage. More particularly, CO2 resistant particle gels are provided that can re-crosslink at subterranean conditions. These particle gels can be deployed to improve the conformance of CO2 flooding, CO2 huff-puff, or Water-Alternative-Gas (WAG). The applications may also involve CO2 storage, such as the blocking of CO2 leakage and similar CO2 processing.
    Type: Application
    Filed: August 27, 2019
    Publication date: March 5, 2020
    Inventors: Yifu Long, Baojun Bai, Thomas P. Schuman