Patents by Inventor Jinli ZHU

Jinli ZHU 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).

  • Staged cementing device and staged cementing method
    Patent number: 11952860
    Abstract: A staged cementing device includes a cylindrical body having an inner chamber. A circulating opening and a liquid inlet recess open to the inner chamber are arranged on a wall of the body. An opening assembly is arranged in the body, which has an opening sleeve and an opening seat located in the opening sleeve. Initially the opening sleeve is connected with the body through a first shear pin and covers the circulating opening, and the opening seat is connected with the opening sleeve through a second shear pin and covers the liquid inlet recess. A packer includes a packing valve body and a packer rubber. The packing valve body includes a flow channel in communication with the liquid inlet recess, and the packer rubber includes a liquid reservoir in communication with the flow channel. The second shear pin is sheared off in response to primary cementing procedure.
    Type: Grant
    Filed: February 1, 2021
    Date of Patent: April 9, 2024
    Assignees: China Petroleum & Chemical Corporation, Sinopec Petroleum Engineering Technology Research Institute Co., Ltd.
    Inventors: Jinli Qin, Yang Liu, Wujun Chen, Ben Liu, Zhaohui Guo, Yanjun Zeng, Ming Liu, Dekai Yang, Yujie Zhu, Hongqian Liao
  • Pre-sressed insulated tubing
    Patent number: 9027607
    Abstract: The present invention relates to a pre-stressed insulated tubing, including an inner tube (3) and an outer tube (2) nested outside of the inner tube (3), and a closed ring cavity is formed between the inner tube (3) and the outer tube (2), wherein an insulated casing (4) is arranged in the closed ring cavity. The pre-stressed insulated tubing of the present invention features high vacuum degree, high thermal insulation level and long working life, and the insulated casing is reusable for cost saving.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: May 12, 2015
    Assignee: General Machinery Plant of Liaohe Petroleum Exploration Bureau of CNPC
    Inventors: Yaoqing Pan, Yongning Wu, Jinli Zhu, Xiaohui Zhang, Wei Zhang, Zhenyu Xu, Zhenyu Jia, Ji Chen, Yi Wang
  • Pre-Sressed Insulated Tubing
    Publication number: 20120175007
    Abstract: The present invention relates to a pre-stressed insulated tubing, including an inner tube (3) and an outer tube (2) nested outside of the inner tube (3), and a closed ring cavity is formed between the inner tube (3) and the outer tube (2), wherein an insulated casing (4) is arranged in the closed ring cavity. The pre-stressed insulated tubing of the present invention features high vacuum degree, high thermal insulation level and long working life, and the insulated casing is reusable for cost saving.
    Type: Application
    Filed: January 6, 2012
    Publication date: July 12, 2012
    Applicant: General Machinery Plant of Liaohe Petroleum Exploration Bureau of CNPC
    Inventors: Yaoqing PAN, Yongning WU, Jinli ZHU, Xiaohui ZHANG, Wei ZHANG, Zhenyu XU, Zhenyu JIA, Ji CHEN, Yi WANG