Method and apparatus for lateral well drilling with biased length adjusting casing cutter
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United States of America Patent
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-
Aug 21, 2012
Grant Date -
Oct 15, 2009
app pub date -
Apr 14, 2009
filing date -
Apr 14, 2008
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The apparatus and method for drilling through the casing utilizes a yieldable biasing element to provide a self-adjusting length and exerts a predictable, controlled biasing force against the casing cutter for penetrating the casing. The cutter will be suspended from the well head by an element which will stretch to some extent, and the self-adjusting length will compensate for this also. As the cutter is lowered into position, and during the casing cutting operation, a flow of pressurized gas or emulsion can be directed through the down hole unit, to clear cuttings and other solids from the cutter's path.
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