IP & T Group LLP
Multi-path combined high-low voltage plasma drilling method, drill bit for drilling and drill bit apparatus for drilling
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.
China University of Petroleum (East China)
E E
E21B E21B
inventional inventional
Renjie Baoping Peng Fan Qiang Yonghong Qingyun Xiaopeng Yancong Xinlei Hang
Ji Cai Liu Zhang Sun Liu Li Li Han Wu Dong