Patents by Inventor Puyan Hou

Puyan Hou 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).

  • Biological desulfurizer for removing organic sulfur in fracturing flowback fluid and application thereof
    Patent number: 11926544
    Abstract: The invention discloses a biological desulfurizer for removing organic sulfur in fracturing flowback fluid and application thereof. The biological desulfurizer includes a compound with a triazine structure formed by modifying chitosan with aldehydes and inorganic salts. The triazine structure has a good removal effect on hydrogen sulfide and organic sulfur such as mercaptan and sulfide. The biological desulfurizer of the invention has a sulfur capacity of up to 250 g/kg and a desulfurization efficiency of over 95% in 15 min. It can effectively remove the stink of sulfur-containing working water, improve the working environment of the well site, and reduce the impact of sulfur compounds on the atmospheric environment during the development of oil and gas fields.
    Type: Grant
    Filed: October 16, 2023
    Date of Patent: March 12, 2024
    Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, CHINA PETROLEUM & CHEMICAL CO., LTD. OF NORTH BRANCH
    Inventors: Xiaoqing Qiu, Xiang Wang, Guisheng Wang, Guofeng Li, Jiawei Zhang, Lei Song, Xia Wang, Qianli Xu, Puyan Hou