Apparatus and methods for limiting debris flow back into an underground base pipe of an injection well
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United States of America Patent
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Aug 14, 2012
Grant Date -
Dec 2, 2010
app pub date -
Aug 10, 2010
filing date -
Apr 21, 2006
priority date (Note) -
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Abstract
In some embodiments, apparatus for assisting in reducing flowback of debris from an earthen formation into an underground fluid injection system includes a screen member disposed around and longitudinally moveable relative to a base pipe and shielded from direct contact with fluid as it is ejected from the base pipe.
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