Method, Drilling Machine, Drill bit and Bottom Hole Assembly for Drilling by Electrical Discharge by Electrical Discharge Pulses

Method, Drilling Machine, Drill bit and Bottom Hole Assembly for Drilling by Electrical Discharge by Electrical Discharge Pulses

Bibliographic Details
Corporate Author: Unodrill As
Other Authors: Rodland A. Arild, Lopatin V. V. Vladimir Vasilyevich, Muratov V. M. Vasily Mikhailovich, Vazhov (Vajov) V. F. Vladislav Fedorovich
Summary:Title screen
Machine for ground drilling, with a circulating fluid, by the utilization of electric discharge generated by high-voltage pulses between electrodes. It may comprise: - A drill-bit 1 with electrodes movable relative to each other, so that bottom-hole physical contact be secured for all the electrodes 4 on all bottom-hole topographies. - Pointed hydraulic nozzles for jetting the fluid, to remove primary cuttings and with pressure expansion across the nozzles 7 at no less than 4 MPa. - A high-voltage pulse generator deployed down-hole at a minimum distance from the drill-bit 1. - A rotating or oscillating bit causing the borehole cross-sectional excavation to occur, and electric discharge between a plurality of electrodes situated on the bit face along one or a few radii and tangents. - A bottom hole assembly for annular hole-making with core storage, transportation, down-hole closed loop discharge fluid circulation. A discharge fluid storage may be incorporated. A drilling method is also described.
Language:Russian
Published:
Subjects:
труды учёных ТПУ
электронный ресурс
патенты
электроимпульсное бурение
Online Access:https://worldwide.espacenet.com/publicationDetails/biblio?CC=US&NR=2009133929A1&KC=A1&FT=D&ND=3&date=20090528&DB=EPODOC&locale=ru_ru#
Format: Electronic Book
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=637205

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