Patents by Inventor Xizhou WANG

Xizhou WANG 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).

  • Coated rubber particle, its preparation and application thereof
    Patent number: 12291668
    Abstract: Disclosed is a coated rubber particle, preparation thereof and its application as a plugging material in drilling fluids. The coated rubber particle comprises a rubber core and a coating layer, wherein the core has a fluorine content (at %) of 0-15%, the coating layer has a fluorine content (at %) of 30-80%, and the coated rubber particle has a 24-hour oil absorption rate of 4% or less. The coated rubber particle has good oil resistance, and is particularly suitable for use as a plugging material in drilling fluids, particularly oil-based drilling fluids.
    Type: Grant
    Filed: February 4, 2021
    Date of Patent: May 6, 2025
    Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, SINOPEC OILFIELD SERVICE CORPORATION, SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD, DRILLING TECHNOLOGY RESEARCH INSTITUTE OF SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD
    Inventors: Gongrang Li, Wenbo Li, Bingxiang Sun, Hui Tian, Xizhou Wang, Ke Li, Jianghong Jia, Lei Yu, Jie Sun, Xudong Wang, Chengjun Wang, Bingtai Li, Haibin Li, Zhendong Liu, Kai Gao, Chunguang Li, Hui Li
  • Coated Rubber Particle, Its Preparation and Application Thereof
    Publication number: 20230242804
    Abstract: Disclosed is a coated rubber particle, preparation thereof and its application as a plugging material in drilling fluids. The coated rubber particle comprises a rubber core and a coating layer, wherein the core has a fluorine content (at %) of 0-15%, the coating layer has a fluorine content (at %) of 30-80%, and the coated rubber particle has a 24-hour oil absorption rate of 4% or less. The coated rubber particle has good oil resistance, and is particularly suitable for use as a plugging material in drilling fluids, particularly oil-based drilling fluids.
    Type: Application
    Filed: February 4, 2021
    Publication date: August 3, 2023
    Inventors: Gongrang LI, Wenbo LI, Bingxiang SUN, Hui TIAN, Xizhou WANG, Ke LI, Jianghong JIA, Lei YU, Jie SUN, Xudong WANG, Chengjun WANG, Bingtai LI, Haibin LI, Zhendong LIU, Kai GAO, Chunguang LI, Hui LI