Patents by Inventor Xiaohui QIU

Xiaohui QIU 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).

  • Performance testing device for acid fracturing fluid and application thereof
    Patent number: 10094814
    Abstract: A performance testing device for acid fracturing fluid includes: two semiterete rock core holders, the flat face sides of the two semiterete rock core holders being arranged opposite to each other; the two semicircle sides of the two semiterete rock core holders being provided with a rotation member which is opened with a first groove; the two semiterete rock core holders being able to rotate about a first rotation axis formed corporately by the two rotation members; a pressure applying shell having a recessed portion that matches with the curved face side, the recessed portion being able to cooperate with the curved face side, the pressure applying shell being able to apply a pressure to the two rock core holders to bring the two flat face sides thereof together.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: October 9, 2018
    Assignee: PetroChina Company Limited
    Inventors: Haiyan Wang, Yongjun Lu, Baoshan Guan, Xiaohui Qiu, Hua Ming, Ping Liu, Wen Zhai
  • Viscoelastic surfactant having multiple hydrophobic and hydrophilic groups as fracturing fluids
    Patent number: 9856413
    Abstract: The present invention relates to viscoelastic fracturing fluids comprising one or more zwitterionic surfactants having multiple hydrophobic and hydrophilic groups. The viscoelastic fracturing fluids can be used to stimulate reservoir and increase oil and gas production.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: January 2, 2018
    Assignee: Petrochina Company Limited
    Inventors: Jiang Yang, Yongjun Lu, Baoshan Guan, Weixiang Cui, Xiaohui Qiu
  • PERFORMANCE TESTING DEVICE FOR ACID FRACTURING FLUID AND APPLICATION THEREOF
    Publication number: 20170009576
    Abstract: A performance testing device for acid fracturing fluid includes: two semiterete rock core holders, the flat face sides of the two semiterete rock core holders being arranged opposite to each other; the two semicircle sides of the two semiterete rock core holders being provided with a rotation member which is opened with a first groove; the two semiterete rock core holders being able to rotate about a first rotation axis formed corporately by the two rotation members; a pressure applying shell having a recessed portion that matches with the curved face side, the recessed portion being able to cooperate with the curved face side, the pressure applying shell being able to apply a pressure to the two rock core holders to bring the two flat face sides thereof together.
    Type: Application
    Filed: July 5, 2016
    Publication date: January 12, 2017
    Inventors: Haiyan WANG, Yongjun LU, Baoshan GUAN, Xiaohui QIU, Hua MING, Ping LIU, Wen ZHAI
  • VISCOELASTIC SURFACTANT HAVING MULTIPLE HYDROPHOBIC AND HYDROPHILIC GROUPS AS FRACTURING FLUIDS
    Publication number: 20150322334
    Abstract: The present invention relates to viscoelastic fracturing fluids comprising one or more zwitterionic surfactants having multiple hydrophobic and hydrophilic groups. The viscoelastic fracturing fluids can be used to stimulate reservoir and increase oil and gas production.
    Type: Application
    Filed: September 6, 2013
    Publication date: November 12, 2015
    Inventors: Jiang YANG, Yongjun LU, Baoshan GUAN, Weixiang CUI, Xiaohui QIU