Patents by Inventor Hengzhi Tang

Hengzhi Tang 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).

  • Surfactant composition, and manufacturing method and application of same
    Patent number: 11920083
    Abstract: This invention relates to a surfactant composition, production and use thereof in tertiary oil recovery. The present surfactant composition comprises a cationic surfactant and an anionic-nonionic surfactant, and exhibits significantly improved interfacial activity and stability as compared with the prior art. With the present surfactant composition, a flooding fluid composition for tertiary oil recovery with improved oil displacement efficiency and oil washing capability as compared with the prior art could be produced.
    Type: Grant
    Filed: June 11, 2020
    Date of Patent: March 5, 2024
    Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY, SINOPEC
    Inventors: Yingcheng Li, Songyuan Gu, Weidong Zhang, Xinning Bao, Zhiqin Shen, Hengzhi Tang, Xiaodong Zhai
  • Surfactant composition, and manufacturing method and application of same
    Patent number: 11578253
    Abstract: This invention relates to a surfactant composition, production and use thereof in tertiary oil recovery. The present surfactant composition comprises a cationic surfactant and an anionic-nonionic surfactant, and exhibits significantly improved interfacial activity and stability as compared with the prior art. With the present surfactant composition, a flooding fluid composition for tertiary oil recovery with improved oil displacement efficiency and oil washing capability as compared with the prior art could be produced.
    Type: Grant
    Filed: June 11, 2020
    Date of Patent: February 14, 2023
    Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY, SINOPEC
    Inventors: Yingcheng Li, Songyuan Gu, Weidong Zhang, Xinning Bao, Zhiqin Shen, Hengzhi Tang, Xiaodong Zhai
  • SURFACTANT COMPOSITION, AND MANUFACTURING METHOD AND APPLICATION OF SAME
    Publication number: 20200308473
    Abstract: This invention relates to a surfactant composition, production and use thereof in tertiary oil recovery. The present surfactant composition comprises a cationic surfactant and an anionic-nonionic surfactant, and exhibits significantly improved interfacial activity and stability as compared with the prior art. With the present surfactant composition, a flooding fluid composition for tertiary oil recovery with improved oil displacement efficiency and oil washing capability as compared with the prior art could be produced.
    Type: Application
    Filed: June 11, 2020
    Publication date: October 1, 2020
    Inventors: Yingcheng Li, Songyuan Gu, Weidong Zhang, Xining Bao, Zhiqin Shen, Hengzhi Tang, Xiaodong Zhai
  • SURFACTANT COMPOSITION, AND MANUFACTURING METHOD AND APPLICATION OF SAME
    Publication number: 20200299566
    Abstract: This invention relates to a surfactant composition, production and use thereof in tertiary oil recovery. The present surfactant composition comprises a cationic surfactant and an anionic-nonionic surfactant, and exhibits significantly improved interfacial activity and stability as compared with the prior art. With the present surfactant composition, a flooding fluid composition for tertiary oil recovery with improved oil displacement efficiency and oil washing capability as compared with the prior art could be produced.
    Type: Application
    Filed: June 11, 2020
    Publication date: September 24, 2020
    Inventors: Yingcheng Li, Songyuan Gu, Weidong Zhang, Xining Bao, Zhiqin Shen, Hengzhi Tang, Xiaodong Zhai
  • Surfactant composition, and manufacturing method and application of same
    Patent number: 10723936
    Abstract: This invention relates to a surfactant composition, production and use thereof in tertiary oil recovery. The present surfactant composition comprises a cationic surfactant and an anionic-nonionic surfactant, and exhibits significantly improved interfacial activity and stability as compared with the prior art. With the present surfactant composition, a flooding fluid composition for tertiary oil recovery with improved oil displacement efficiency and oil washing capability as compared with the prior art could be produced.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: July 28, 2020
    Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY, SINOPEC
    Inventors: Yingcheng Li, Songyuan Gu, Weidong Zhang, Xining Bao, Zhiqin Shen, Hengzhi Tang, Xiaodong Zhai
  • SURFACTANT COMPOSITION, AND MANUFACTURING METHOD AND APPLICATION OF SAME
    Publication number: 20160122621
    Abstract: This invention relates to a surfactant composition, production and use thereof in tertiary oil recovery. The present surfactant composition comprises a cationic surfactant and an anionic-nonionic surfactant, and exhibits significantly improved interfacial activity and stability as compared with the prior art. With the present surfactant composition, a flooding fluid composition for tertiary oil recovery with improved oil displacement efficiency and oil washing capability as compared with the prior art could be produced.
    Type: Application
    Filed: June 17, 2014
    Publication date: May 5, 2016
    Inventors: Yingcheng Li, Songyuan Gu, Weidong Zhang, Xining Bao, Zhiqin Shen, Hengzhi Tang, Xiaodong Zhai