Patents by Inventor Xueliang PEI

Xueliang PEI 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).

  • Publication number: 20250059841
    Abstract: A coring tool, a coring method, and use thereof are provided. The coring tool has a differential device for selective force transmission and a core gripping device for core cutting operations arranged within the housing. The core gripping device has a retractable core gripper, a slip-collar type core gripper and a shielding mechanism. The shielding mechanism is configured to be actuated by the differential device, so that the slip-collar type core gripper is shielded during coring operation and a first core cutting operation to avoid accidental core cutting operation, and to be exposed during a second core cutting operation to complete the whole core cutting operation.
    Type: Application
    Filed: December 27, 2022
    Publication date: February 20, 2025
    Inventors: Zhongshuai CHEN, Xueliang PEI, Zhonghua WU, Zhihe LIU, Feng LIU, Wei ZHUANG, Renlei NING, Kai GAO, Guiting WANG, Haobo LI
  • Patent number: 11946334
    Abstract: A flow splitting device for gas reverse circulation drilling, including: an upper joint for connecting with a double-wall drill pipe; an inner tube which is arranged in the upper joint and defines a first passageway in communication with an inner chamber of the double-wall drill pipe, a second passageway in communication with an annular space in the double-wall drill pipe formed between the inner tube and the upper joint; a lower joint, having an upper end fixedly connected with the upper joint and a lower end for connecting with a drill tool; and a flow guiding member provided between the upper joint and the lower joint. A flexible sealing mechanism is provided outside the upper joint. The flexible sealing mechanism extends radially outward relative to the upper joint and the lower joint to form a sealing contact with a wellbore wall.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: April 2, 2024
    Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, SINOPEC PETROLEUM ENGINEERING TECHNOLOGY SERVICE CO., LTD, SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD, DRILLING TECHNOLOGY RESEARCH INSTITUTE OF SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD
    Inventors: Chuanwei Zhao, Zhonghua Wu, Yanjun Zhou, Honglin Tang, Zhihe Liu, Xueliang Pei, Haoyu Sun, Zhenguo Su, Bo Kang, Hui Zhang, Huangang Zhu, Yongming Chen, Zhongshuai Chen
  • Publication number: 20230147453
    Abstract: A flow splitting device for gas reverse circulation drilling, including: an upper joint for connecting with a double-wall drill pipe; an inner tube which is arranged in the upper joint and defines a first passageway in communication with an inner chamber of the double-wall drill pipe, a second passageway in communication with an annular space in the double-wall drill pipe formed between the inner tube and the upper joint; a lower joint, having an upper end fixedly connected with the upper joint and a lower end for connecting with a drill tool; and a flow guiding member provided between the upper joint and the lower joint. A flexible sealing mechanism is provided outside the upper joint. The flexible sealing mechanism extends radially outward relative to the upper joint and the lower joint to form a sealing contact with a wellbore wall.
    Type: Application
    Filed: September 30, 2020
    Publication date: May 11, 2023
    Applicants: CHINA PETROLEUM & CHEMICAL CORPORATION, SINOPEC PETROLEUM ENGINEERING TECHNOLOGY SERVICE CO., LTD, SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD, DRILLING TECHNOLOGY RESEARCH INSTITUTE OF SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD
    Inventors: Chuanwei ZHAO, Zhonghua WU, Yanjun ZHOU, Honglin TANG, Zhihe LIU, Xueliang PEI, Haoyu SUN, Zhenguo SU, Bo KANG, Hui ZHANG, Huangang ZHU, Yongming CHEN, Zhongshuai CHEN