Apparatus for driving rotating down hole pumps
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United States of America Patent
Stats
-
Sep 13, 2011
Grant Date -
Feb 5, 2009
app pub date -
Jul 3, 2008
filing date -
Jul 30, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An apparatus for rotating down hole pumps has a right angle gear box driving a hollow output shaft. The output shaft is oriented to the vertical and supports and rotates the drive string of a down hole rotary pump. A clamp on the drive string rests on the upper end of the hollow shaft and engages the hollow shaft with a key and keyway arrangement. The hollow shaft of the right angle gearbox is sized to accommodate the drive string, including rod boxes, so that the entire drive string can be pulled through the hollow shaft without dismantling or removing the apparatus.
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