Systems and methods for automatic weight on bit sensor calibration and regulating buckling of a drillstring
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United States of America Patent
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Mar 8, 2016
Issued Date -
N/A
app pub date -
Dec 28, 2012
filing date -
Dec 28, 2011
priority date (Note) -
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Abstract
Disclosed are systems and methods for automatic weight on bit sensor calibration and regulating buckling of a drillstring. One method includes taking a first survey recording at a first depth within a borehole, the first survey recording providing inclination and azimuth of a drillstring at the first depth, measuring a weight on a drill bit at the first depth with a sensor sub arranged on a bottom hole assembly, the bottom hole assembly forming part of the drillstring and the drill bit being disposed at an end of the drillstring, calculating a predicted borehole curvature at a second depth within the borehole, the predicted curvature including a predicted inclination and a predicted azimuth of the drillstring at the second depth, calculating a weight correction value based on the predicted hole curvature, and calibrating the sensor sub with the weight correction value.
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