Patents by Inventor Congjing LIU

Congjing LIU 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 elasticity of cement stone utilized in well cementing of oil-gas well
    Patent number: 10928282
    Abstract: The invention provides a method and device for measuring the elasticity of hardened cement for cementing of oil-gas wells. The measurement method comprises: determining the loading and unloading rates of the hardened cement; determining the maximum loading on the hardened cement; determining the experimental temperature and the experimental pressure of the hardened cement; establishing a stress-strain curve for the hardened cement; and describing the elasticity of the hardened cement with the degree of strain recovery of the hardened cement in different cycles, and describing the mechanic integrity of the hardened cement with the degree of damage to the hardened cement in different cycles. The invention further provides a device for measuring the elasticity of hardened cement for cementing of oil-gas wells.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: February 23, 2021
    Assignee: PetroChina Company Limited
    Inventors: Youzhi Zheng, Bo Kong, Jie Li, Huiyun Ma, Yu Sang, Tao Yang, Minghua Xie, Libin Jiao, Fuyun Wang, Hongwei Xia, Jiang Yu, Qiyan Tan, Congjing Liu, Ji Chen, Qiang Fu, Xiaoli Zhao, Fenglin Guo, Yong Wu, Yiguo He, Bin Wang, Xiaojiao Wang
  • METHOD AND DEVICE FOR DETERMINING ELASTICITY OF CEMENT STONE UTILIZED IN WELL CEMENTING OF OIL-GAS WELL
    Publication number: 20190271621
    Abstract: The invention provides a method and device for measuring the elasticity of hardened cement for cementing of oil-gas wells. The measurement method comprises: determining the loading and unloading rates of the hardened cement; determining the maximum loading on the hardened cement; determining the experimental temperature and the experimental pressure of the hardened cement; establishing a stress-strain curve for the hardened cement; and describing the elasticity of the hardened cement with the degree of strain recovery of the hardened cement in different cycles, and describing the mechanic integrity of the hardened cement with the degree of damage to the hardened cement in different cycles. The invention further provides a device for measuring the elasticity of hardened cement for cementing of oil-gas wells.
    Type: Application
    Filed: October 31, 2017
    Publication date: September 5, 2019
    Applicant: PetroChina Company Limited
    Inventors: Youzhi ZHENG, Bo KONG, Jie LI, Huiyun MA, Yu SANG, Tao YANG, Minghua XIE, Libin JIAO, Fuyun WANG, Hongwei XIA, Jiang YU, Qiyan TAN, Congjing LIU, Ji CHEN, Qiang FU, Xiaoli ZHAO, Fenglin GUO, Yong WU, Yiguo HE, Bin WANG, Xiaojiao WANG