Jet motor for providing rotation in a downhole tool
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United States of America Patent
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Mar 30, 2010
Grant Date -
Oct 4, 2007
app pub date -
Mar 29, 2007
filing date -
Mar 31, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
The invention comprises a downhole jet motor, and a method of using same, that can be utilized to drill or to clean a well bore or tubing. The jet motor comprises a power shaft partially surrounded by a control sleeve defining a blind annular space, closed at the upper end and open at the lower end to allow fluid discharge. At least one opening is provided in the drive shaft wall extending radially within the annulus region. Drilling or cleaning fluid pressure is directed to the at least one opening in the power shaft. The control sleeve provides a reaction structure in relation to fluid discharged from the at least one opening producing rotation of the drive shaft in relation to the control sleeve.
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