Horizontal waterjet drilling method
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United States of America Patent
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Apr 6, 2010
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N/A
app pub date -
Nov 24, 2008
filing date -
Nov 24, 2008
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Abstract
A method of completing a lateral channel in a coal seam using a flexible hose with a waterjet that may be directed down a well casing and into a guide shoe. The guide shoe defines a window configured to open into the coal seam and allow the waterjet to engage the coal seam in a substantially horizontal direction. High pressure fluid is then pumped into the waterjet to make a lateral channel therein, and the flexible hose is rigid enough to allow an operator to manually-move the flexible hose.
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