Patents by Inventor DEXIN PANG

DEXIN PANG 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).

  • Coupling apparatus for coiled tubings of different diameters, installing method for coupling apparatus, and installing method for tubings of different diameters using coupling apparatus
    Patent number: 11149496
    Abstract: A coupling apparatus for coiled tubings of different diameters includes a bottom joint, a top joint, and a back cap, where a gapped slip sleeve is provided on a fitting ring groove on an outer side of an upper portion of the bottom joint, and the gapped slip sleeve is coupled with the bottom joint via a rotation preventing element capable of preventing radial rotation of the gapped slip sleeve.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: October 19, 2021
    Assignees: CHINA NATIONAL PETROLEUM CORPORATION, XINJIANG PETROLEUM ADMINISTRATION ENGINEERING TECHNOLOGY COMPANY
    Inventors: Dexin Pang, Abulimiti Aibaibu, Xinwei Guo, Qian Zhao, Jianlei Wang, Wenxin Yang, Yajing Wang
  • COUPLING APPARATUS FOR COILED TUBINGS OF DIFFERENT DIAMETERS, INSTALLING METHOD FOR COUPLING APPARATUS, AND INSTALLING METHOD FOR TUBINGS OF DIFFERENT DIAMETERS USING COUPLING APPARATUS
    Publication number: 20180209572
    Abstract: Disclosed is a coupling apparatus for coiled tubings of different diameters, an installing method for the coupling apparatus, and an installing method for tubings of different diameters. The coupling apparatus includes a bottom joint, a top joint, and a back cap, where a gapped slip sleeve is provided on a fitting ring groove on an outer side of an upper portion of the bottom joint, and the gapped slip sleeve is coupled with the bottom joint via a rotation preventing element capable of preventing radial rotation of the gapped slip sleeve. The coupling apparatus allows for easy installation and simple maintenance, and coupling coiled tubings of different diameters at the same wellhead with less difficulties, and provides enhanced resistance to tension and torque to avoid piercement and improve safety. The installing method includes retaining the top joint with a large diameter coiled tubing.
    Type: Application
    Filed: January 24, 2018
    Publication date: July 26, 2018
    Inventors: DEXIN PANG, ABULIMITI AIBAIBU, XINWEI GUO, QIAN ZHAO, JIANLEI WANG, WENXIN YANG, YAJING WANG