Patents by Inventor Changhao HU

Changhao HU 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).

  • Method for injecting non-condensable gas or in-situ combustion to recover remaining oil in a heavy oil reservoir with bottom water
    Patent number: 11306571
    Abstract: A method for injecting non-condensable gas or application of in-situ combustion to recover remaining oil in a heavy oil reservoir with bottom water includes: drilling a new horizontal well in an oil layer between the existing horizontal production well location and the bottom water layer; preheating the new horizontal well; after the horizontal section of the horizontal well is in thermal communication with the upper steam/gas chamber, performing gas injection in existing wells to maintain pressure slightly higher or similar to the pressure of the bottom water layer, and converting the horizontal well into a continuous production well; drilling a vertical well in the unswept reservoir area; establishing a fluid communication in the oil layer between the vertical well and the horizontal well, injecting air or oxygen into the vertical well; and in the later stage of the horizontal well, stopping gas injection and gradually reducing the pressure in the steam/gas chamber.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: April 19, 2022
    Assignees: SOUTHWEST PETROLEUM UNIVERSITY, HEAVY OIL DEVELOPMENT INSTITUTE, LIAOHE OILFIELD EXPLORATION AND DEVELOPMENT RESEARCH INSTITUTE PETROCHINA OILFIELD
    Inventors: Qi Jiang, Changhao Hu, Zhongyuan Wang, Siyuan Huang, Zhibin Wang, Dong Wang
  • METHOD FOR INJECTING NON-CONDENSABLE GAS OR IN-SITU COMBUSTION TO RECOVER REMAINING OIL IN A HEAVY OIL RESERVOIR WITH BOTTOM WATER
    Publication number: 20210262331
    Abstract: The present invention discloses a method for injecting non-condensable gas or application of in-situ combustion to recover remaining oil in a heavy oil reservoir with bottom water, comprising the following steps: drilling a new horizontal well in an oil layer between the existing horizontal production well location and the bottom water layer; preheating the new horizontal well; after the horizontal section of the horizontal well is in thermal communication with the upper steam/gas chamber, performing gas injection in existing wells to maintain pressure slightly higher or similar to the pressure of the bottom water layer, and converting the horizontal well into a continuous production well; drilling a vertical well in the unswept reservoir area; establishing a fluid communication in the oil layer between the vertical well and the horizontal well, injecting air or oxygen into the vertical well; in the later stage of the horizontal well, stopping gas injection and gradually reducing the pressure in the steam/gas
    Type: Application
    Filed: March 19, 2020
    Publication date: August 26, 2021
    Inventors: Qi JIANG, Changhao HU, Zhongyuan WANG, Siyuan HUANG, Zhibin WANG, Dong WANG
  • METHOD FOR INJECTING NON-CONDENSABLE GAS OR IN-SITU COMBUSTION TO RECOVER REMAINING OIL IN A HEAVY OIL RESERVOIR WITH BOTTOM WATER
    Publication number: 20200300069
    Abstract: The present invention discloses a method for injecting non-condensable gas or application of in-situ combustion to recover remaining oil in a heavy oil reservoir with bottom water, comprising the following steps: drilling a new horizontal well in an oil layer between the existing horizontal production well location and the bottom water layer; preheating the new horizontal well; after the horizontal section of the horizontal well is in thermal communication with the upper steam/gas chamber, performing gas injection in existing wells to maintain pressure slightly higher or similar to the pressure of the bottom water layer, and converting the horizontal well into a continuous production well; drilling a vertical well in the unswept reservoir area; establishing a fluid communication in the oil layer between the vertical well and the horizontal well, injecting air or oxygen into the vertical well; in the later stage of the horizontal well, stopping gas injection and gradually reducing the pressure in the steam/gas
    Type: Application
    Filed: March 19, 2020
    Publication date: September 24, 2020
    Inventors: Qi JIANG, Changhao HU, Zhongyuan WANG, Siyuan HUANG, Zhibin WANG, Dong WANG