Patents by Inventor Zhengxin CHEN

Zhengxin CHEN 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).

  • Systems and methods for determining wear of downhole tools
    Patent number: 12241322
    Abstract: A method of detecting wear of a downhole tool implemented in a subject wellbore includes receiving offset wellbore data for one or more offset wellbores and, based on the offset wellbore data, determining an expected downhole tool index for the downhole tool at one or more measurement depths including an active measurement depth of the subject wellbore. The method further includes receiving subject wellbore data and, based on the subject wellbore data, determining a subject downhole tool index in real time for the downhole tool at the active measurement depth. The method further includes determining the wear of the downhole tool based on comparing the subject downhole tool index to the expected downhole tool index at the active measurement depth in real time.
    Type: Grant
    Filed: November 9, 2023
    Date of Patent: March 4, 2025
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Wei Chen, Gregory Michael Skoff, Huseyin Murat Panayirci, Zhengxin Zhang, Yuelin Shen, Maria Lucia Cazares Gomez
  • Current transformer
    Patent number: 10340079
    Abstract: A current transformer includes a closed magnetic circuit and a secondary winding. A first part of the closed magnetic circuit completely surrounds a primary conductor, and a second part of the closed magnetic circuit forms the secondary winding. The second part of the closed magnetic circuit serves as a magnetic core of the secondary winding. The closed magnetic circuit forms a plurality of branch magnetic circuits at the second part, and a secondary winding is formed on each branch magnetic circuit. Each branch magnetic circuit serves as a magnetic core of a corresponding secondary winding. Each secondary winding is staggered with each other in at least one of the length, the height and the thickness.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: July 2, 2019
    Assignees: SEARI ELECTRIC TECHNOLOGY CO., LTD., ZHEJIANG CHINT ELECTRICS CO., LTD.
    Inventors: Xiangjun Wan, Beilu Su, Jun Wang, Zhengxin Chen, Jing Feng
  • CURRENT TRANSFORMER
    Publication number: 20170229236
    Abstract: A current transformer includes a closed magnetic circuit and a secondary winding. A first part of the closed magnetic circuit completely surrounds a primary conductor, and a second part of the closed magnetic circuit forms the secondary winding. The second part of the closed magnetic circuit serves as a magnetic core of the secondary winding. The closed magnetic circuit forms a plurality of branch magnetic circuits at the second part, and a secondary winding is formed on each branch magnetic circuit. Each branch magnetic circuit serves as a magnetic core of a corresponding secondary winding. Each secondary winding is staggered with each other in at least one of the length, the height and the thickness.
    Type: Application
    Filed: July 23, 2015
    Publication date: August 10, 2017
    Applicants: Seari Electric Technology Co., Ltd., Zhejiang Chint Electrics Co., Ltd.
    Inventors: Xiangjun WANG, Beilu SU, Jun WANG, Zhengxin CHEN, Jing FENG