Top drive system
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United States of America Patent
Stats
-
Jul 3, 2012
Grant Date -
Jun 18, 2009
app pub date -
Dec 12, 2008
filing date -
Dec 12, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In one embodiment, a top drive system includes a quill; a motor operable to rotate the quill; a gripper operable to engage a joint of casing; a connector bi-directionally rotationally coupled to the quill and the gripper and longitudinally coupled to the gripper; and a compensator longitudinally coupled to the quill and the connector. The compensator is operable to allow relative longitudinal movement between the connector and the quill.
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Cited Art Landscape
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