Swabbing tool for wells
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United States of America Patent
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-
Jun 7, 2005
Grant Date -
May 13, 2004
app pub date -
Oct 17, 2003
filing date -
Nov 8, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A swabbing tool for wells that filters particulates from fluids passing through the swabbing tool. The swabbing tool comprises a mandrel, at least one swab cup on the mandrel, the mandrel and swab cup being arranged to allow fluids to pass from below to above the swab cup; and a sifter attached to the swabbing tool below the swab cup for filtering particulates from fluid passing from below to above the swab cup. The sifter is barrel shaped and is provided with a sealing element attached to the sifter to force fluid into the sifter. The sifter has an interior and the sealing element is dimensioned to seal against a casing or tubing wall and force fluid into the sifter. The openings in the sand sifting element may be slots, with a size between 0.125 mm to 0.635 mm.
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