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Title: Focused shock spark discharge drill using multiple electrodes

Abstract

A spark discharge focused drill provided with one pulse forming line or a number of pulse forming lines. The pulse forming line is connected to an array of electrodes which would form a spark array. One of the electrodes of each of the array is connected to the high voltage side of the pulse forming line and the other electrodes are at ground potential. When discharged in a liquid, these electrodes produce intense focused shock waves that can pulverize or fracture rock. By delaying the firing of each group of electrodes, the drill can be steered within the earth. Power can be fed to the pulse forming line either downhole or from the surface area. A high voltage source, such as a Marx generator, is suitable for pulse charging the lines.

Inventors:
;
Issue Date:
Research Org.:
Tetra Corporation, Albuquerque, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
866576
Patent Number(s):
4741405
Application Number:
07/000,768
Assignee:
Tetra Corporation (Albuquerque, NM)
Patent Classifications (CPCs):
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING
DOE Contract Number:  
FG02-85ER13330
Resource Type:
Patent
Resource Relation:
Patent File Date: 1987 Jan 06
Country of Publication:
United States
Language:
English
Subject:
/175/

Citation Formats

Moeny, William M., and Small, James G.. Focused shock spark discharge drill using multiple electrodes. United States: N. p., 1988. Web.
Moeny, William M., & Small, James G.. Focused shock spark discharge drill using multiple electrodes. United States.
Moeny, William M., and Small, James G.. Fri . "Focused shock spark discharge drill using multiple electrodes". United States. https://www.osti.gov/servlets/purl/866576.
@article{osti_866576,
title = {Focused shock spark discharge drill using multiple electrodes},
author = {Moeny, William M. and Small, James G.},
abstractNote = {A spark discharge focused drill provided with one pulse forming line or a number of pulse forming lines. The pulse forming line is connected to an array of electrodes which would form a spark array. One of the electrodes of each of the array is connected to the high voltage side of the pulse forming line and the other electrodes are at ground potential. When discharged in a liquid, these electrodes produce intense focused shock waves that can pulverize or fracture rock. By delaying the firing of each group of electrodes, the drill can be steered within the earth. Power can be fed to the pulse forming line either downhole or from the surface area. A high voltage source, such as a Marx generator, is suitable for pulse charging the lines.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1988},
month = {1}
}

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