Patents by Inventor Awei Li

Awei Li 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 and device for determining fracture closure pressure based on hydraulic fracturing
    Patent number: 12378863
    Abstract: A method and a device for determining fracture closure pressure based on hydraulic fracturing are provided. The method includes: determining a leak-off volume of a fluid during a refrac cycle according to a fluid pressure during the refrac cycle; generating a stiffness change curve during the refrac cycle according to the leak-off volume of the fluid and the fluid pressure; and determining the fracture closure pressure according to the stiffness change curve. A hydraulic coupling mechanism and change characteristics during a pressure attenuation process are quantitatively characterized, and characteristic response corresponding to a pressure drop curve before and after the fracture closure are accurately described, thereby providing a method and a device for determining fracture closure pressure with clear physical significance and objective effectiveness.
    Type: Grant
    Filed: January 1, 2025
    Date of Patent: August 5, 2025
    Assignee: Institute of Geomechanics, Chinese Academy of Geological Sciences
    Inventors: Yuehui Yang, Dongsheng Sun, Qunce Chen, Awei Li, Bangchen Wu