The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 08, 2023
Filed:
Feb. 26, 2023
Sichuan University, Chengdu, CN;
Yibin Industrial Technology Research Institute of Sichuan University, Yibin, CN;
Xin Guo, Chengdu, CN;
Zechuan Huang, Chengdu, CN;
Wu Zhao, Chengdu, CN;
Kai Zhang, Yibin, CN;
Miao Yu, Yibin, CN;
Yiwei Jiang, Chengdu, CN;
Mingyue Yang, Chengdu, CN;
Chong Jiang, Chengdu, CN;
Bing Lai, Chengdu, CN;
Xingyu Chen, Chengdu, CN;
Bo Wu, Chengdu, CN;
Jun Li, Chengdu, CN;
SICHUAN UNIVERSITY, Chengdu, CN;
Yibin Industrial Technology Research Institute of Sichuan University, Yibin, CN;
Abstract
A preset three-stage adjustable downhole choke with choking and pressure measurement functions includes an intake assembly for natural gas filtration, an electrically-controlled telescopic assembly for positioning and clamping the downhole choke with a prefabricated seating nipple, and a three-stage choking assembly for natural gas choking and depressurization. The intake assembly, the electrically-controlled telescopic assembly, and the three-stage choking assembly are sequentially communicated from bottom to top. A first-stage control choke, a second-stage adjustable control choke, and a third-stage control choke are sequentially provided in a gas passage of the three-stage choking assembly from bottom to top. The preset three-stage adjustable downhole choke features convenient installation and removal, three-stage choking and depressurization, and an adjustable orifice diameter of a control choke, and can achieve different choking and depressurization effects.