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:
Jan. 03, 2023
Filed:
Nov. 29, 2021
Southwest Petroleum University, Chengdu, CN;
Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, CN;
Yang Tang, Chengdu, CN;
Peng Zhao, Chengdu, CN;
Guorong Wang, Chengdu, CN;
Jinhai Zhao, Chengdu, CN;
Qingyou Liu, Chengdu, CN;
Jinzhong Wang, Chengdu, CN;
Guangjie Yuan, Chengdu, CN;
Yufa He, Zhanjiang, CN;
Qingping Li, Zhanjiang, CN;
Xushen Li, Zhanjiang, CN;
Xiaoyu Fang, Zhanjiang, CN;
Zeliang Li, Chengdu, CN;
Xin Jing, Chengdu, CN;
Southwest Petroleum University, Chengdu, CN;
Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, CN;
Abstract
A cavity creation tool by crushing with multi-stage controllable water jet, it is used in natural gas hydrate development and mainly consists of an inner tube upper joint, an inner tube lower joint, an intermediate sleeve, an inner structure consisting of a coaxial throttle push rod, an outer layer sleeve, an outer layer structure consisting of a supporting ring, a jet head mounted to the intermediate sleeve and threading the outer layer sleeve, and a jet crushing structure consisting of a single-stage telescopic jet head and a two-stage telescopic jet head.