Patents by Inventor Junjie Lao

Junjie Lao 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).

  • Patent number: 10934805
    Abstract: The present disclosure provides a fracturing bridge plug, and belongs to the technical field of downhole plugging devices of oil and gas fields, which solves technical problems that the existing packer rubber is axially compressed, a bridge plug is relatively long, and a dissolving or drilling effect is not ideal. The fracturing bridge plug comprises a cone, an upper cone, a seal assembly, a lower cone, a slip, a locking ring and a guide shoe, a matching surface of the upper cone and the seal assembly is a first ramp, one end, far away from the lower cone, of the first ramp is a large end while one end, close to the lower cone, thereof is a small end, and the diameter of the first ramp from the large end to the small end is gradually reduced.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: March 2, 2021
    Assignee: Tianjin Material Technology Co., Ltd.
    Inventors: Yicun Li, Chen Chen, Longchun Xue, Junjie Lao
  • Publication number: 20200355040
    Abstract: The present disclosure provides a fracturing bridge plug, and belongs to the technical field of downhole plugging devices of oil and gas fields, which solves technical problems that the existing packer rubber is axially compressed, a bridge plug is relatively long, and a dissolving or drilling effect is not ideal. The fracturing bridge plug comprises a cone, an upper cone, a seal assembly, a lower cone, a slip, a locking ring and a guide shoe, a matching surface of the upper cone and the seal assembly is a first ramp, one end, far away from the lower cone, of the first ramp is a large end while one end, close to the lower cone, thereof is a small end, and the diameter of the first ramp from the large end to the small end is gradually reduced.
    Type: Application
    Filed: June 19, 2019
    Publication date: November 12, 2020
    Inventors: Yicun Li, Chen Chen, Longchun Xue, Junjie Lao