Patents by Inventor Zhengxiao XU

Zhengxiao XU 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).

  • Patent number: 11156069
    Abstract: The invention relates to the recovery of heavy oil reservoirs, and more particularly to a supported catalyst-assisted microwave method for exploiting a heavy oil reservoir. The method includes: (1) injecting a slug of a supported catalyst fluid into the heavy oil reservoir; (2) placing a microwave generator in the heavy oil reservoir to perform volumetric heating on an oil layer containing the supported catalyst fluid; and (3) turning off the microwave generator and injecting water into the heavy oil reservoir for subsequent displacement, where a water injection rate is 3 m/d or less.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: October 26, 2021
    Assignee: China University of Petroleum (East China)
    Inventors: Zhaomin Li, Zhengxiao Xu, Teng Lu, Yanling Zhao, Yajie Xu, Fanyu Meng, Faqiang Dang
  • Publication number: 20200378227
    Abstract: The invention relates to the recovery of heavy oil reservoirs, and more particularly to a supported catalyst-assisted microwave method for exploiting a heavy oil reservoir. The method includes: (1) injecting a slug of a supported catalyst fluid into the heavy oil reservoir; (2) placing a microwave generator in the heavy oil reservoir to perform volumetric heating on an oil layer containing the supported catalyst fluid; and (3) turning off the microwave generator and injecting water into the heavy oil reservoir for subsequent displacement, where a water injection rate is 3 m/d or less.
    Type: Application
    Filed: January 16, 2020
    Publication date: December 3, 2020
    Inventors: Zhaomin LI, Zhengxiao XU, Teng LU, Yanling ZHAO, Yajie XU, Fanyu MENG, Faqiang DANG
  • Patent number: 10767106
    Abstract: Disclosed belongs to the technical field of heavy oil extraction, and specifically relates to a viscosity reduction system for microwave extraction of heavy oil and a preparation method thereof. The viscosity reduction system is a magnetic graphene oxide. The viscosity reduction system added to heavy oil has a significant viscosity reduction effect after microwave treatment. The viscosity reduction system exhibits lipophilicity and can be adsorbed on oil droplets, so that the thermal effect of microwaves assisted by the viscosity reduction system mainly acts on a reservoir, which reduces heat loss during heat transfer. At the same time, the viscosity reduction system is magnetic, which helps directional regulation and separation under the action of a magnetic field.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: September 8, 2020
    Assignee: CHINA UNIVERSITY OF PETROLEUM
    Inventors: Zhaomin Li, Zhengxiao Xu, Teng Lu, Mingxuan Wu, Xinru Zhao, Aiwen Jing
  • Publication number: 20200208042
    Abstract: Disclosed belongs to the technical field of heavy oil extraction, and specifically relates to a viscosity reduction system for microwave extraction of heavy oil and a preparation method thereof. The viscosity reduction system is a magnetic graphene oxide. The viscosity reduction system added to heavy oil has a significant viscosity reduction effect after microwave treatment. The viscosity reduction system exhibits lipophilicity and can be adsorbed on oil droplets, so that the thermal effect of microwaves assisted by the viscosity reduction system mainly acts on a reservoir, which reduces heat loss during heat transfer. At the same time, the viscosity reduction system is magnetic, which helps directional regulation and separation under the action of a magnetic field.
    Type: Application
    Filed: March 9, 2020
    Publication date: July 2, 2020
    Inventors: Zhaomin LI, Zhengxiao XU, Teng LU, Mingxuan WU, Xinru ZHAO, Aiwen JING