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:
Apr. 05, 2022
Filed:
Jan. 06, 2020
China University of Petroleum (East China), Shandong, CN;
Yonghong Liu, Shandong, CN;
Qiang Sun, Shandong, CN;
Qingyun Li, Shandong, CN;
Renjie Ji, Shandong, CN;
Baoping Cai, Shandong, CN;
Xiaopeng Li, Shandong, CN;
Yancong Han, Shandong, CN;
Peng Liu, Shandong, CN;
Xinlei Wu, Shandong, CN;
Hang Dong, Shandong, CN;
Fan Zhang, Shandong, CN;
China University of Petroleum (East China), Shandong, CN;
Abstract
A multi-path combined high-low voltage plasma drilling method, a drill bit for drilling and a drill bit apparatus for drilling utilizing this method. The drilling method includes: disposing a plurality of mutually independent plasma generators on a plasma drill bit, wherein the plasma generators are independently connected to a plasma power source on the ground through wires; allowing each of the plasma generators to eject high-frequency pulsed plasma arc under the control of its corresponding combined high-low voltage pulse power source on the ground; ejecting the high-frequency pulsed plasma arc onto a wall of a drilling well, forming impulsive high temperature thermal shock stress inside the rocks on the wall of the drilling well; and breaking the rocks under the shock of thermal stress to form rock debris.