Patents by Inventor Niantao Zhou

Niantao Zhou 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).

  • Quantitative evaluation method for integrity and damage evolution of cement sheath in oil-gas well
    Patent number: 11965412
    Abstract: A quantitative evaluation method for integrity and damage evolution of a cement sheath in an oil-gas well is provided based on a fractal theory, an image processing technology, structural features and failure mechanisms of a casing-cement sheath-formation combination. The method uses correlations among fractal dimensions of casing-cement sheath interface morphology, cement sheath microscopic pore morphology, particle morphology of an initial blank group, and macroscopic mechanical properties including a radial cementing strength of the cement sheath interface, a tensile strength, and a compressive strength to quantitatively evaluate the integrity of the cement sheath of the blank group.
    Type: Grant
    Filed: May 5, 2023
    Date of Patent: April 23, 2024
    Assignee: SOUTHWEST PETROLEUM UNIVERSITY
    Inventors: Kuanhai Deng, Niantao Zhou, Yuanhua Lin, Mingyuan Yao, Ming Zhang, Deqiang Yi, Pengfei Xie, Yang Peng