Apparatus for injecting impactors into a fluid stream using a screw extruder
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United States of America Patent
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Aug 16, 2011
Grant Date -
Aug 13, 2009
app pub date -
Jul 3, 2007
filing date -
Jul 22, 2004
priority date (Note) -
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Abstract
An injection system and method is described. In several exemplary embodiments, the injection system and method may be a part of, and/or used with, a system and method for excavating a subterranean formation. In at least one example, an apparatus is provided that includes a source of impactors comprising at least some ferritic material capable of influence by magnetic fields. An injector is coupled to the source and includes a screw extruder, a screw positioned within a barrel, and at least one magnetic circuit is positioned outside of the barrel.
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