Drilling system, biasing mechanism and method for directionally drilling a borehole
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United States of America Patent
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Jan 31, 2017
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app pub date -
Mar 15, 2013
filing date -
May 30, 2012
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Abstract
A drilling system for directional drilling of a borehole includes a biasing mechanism having a pivot associated with a lower bearing assembly, an offset mechanism associated with an upper radial bearing assembly, and a toolface controller, whereby the angular relationship of a drill bit and its toolface angle may be actively managed.
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