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:
Mar. 12, 2024
Filed:
Sep. 26, 2022
Southwest Petroleum University, Chengdu, CN;
Sichuan Xieming Technology Co., Ltd., Chengdu, CN;
Jialin Tian, Chengdu, CN;
Lanhui Mao, Chengdu, CN;
Yanniu Ren, Chengdu, CN;
Lin Yang, Chengdu, CN;
Haolin Song, Chengdu, CN;
Bo He, Chengdu, CN;
Jun Li, Chengdu, CN;
Lei Cha, Chengdu, CN;
Zhe Zhang, Chengdu, CN;
Yu Wei, Chengdu, CN;
Southwest Petroleum University, Chendu, CN;
Sichuan Xieming Technology Co., Ltd., Chengdu, CN;
Abstract
A high-frequency composite impactor including a high-frequency axial and a torsional impact assembly is disclosed. The high-frequency axial impact assembly includes an upper self-excited oscillation cavity, a lower self-excited oscillation cavity, an adjustment block and a lock nut. The torsional impact assembly includes an upper end cover, a reversing switch, a pendulum, a lower shell, a lower end cover, a nozzle, a connecting block and a retaining ring. The high-frequency axial impact assembly converts the flowing drilling fluid into a pulsed jet to achieve a high-frequency axial impact. The torsional impact assembly enables a torsional impact through a shunt, and finally enables a high-frequency composite impact, which can effectively reduce the stick-slip of the drill string, jump drilling and other downhole accidents. By reducing the friction between the drill string and the borehole wall, the impactor can reduce WOB loss, increase the ROP, and improve the drilling efficiency.