Patents Assigned to XINJIANG PETROLEUM ADMINISTRATION ENGINEERING TECHNOLOGY COMPANY - Justia Patents Search

Patents Assigned to XINJIANG PETROLEUM ADMINISTRATION ENGINEERING TECHNOLOGY COMPANY

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