WEIGHT CONTROLLED SLIP INTERLOCK SYSTEMS AND METHODS
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United States of America Patent
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Issued Date -
Oct 3, 2013
app pub date -
Mar 27, 2012
filing date -
Mar 27, 2012
priority date (Note) -
Abandoned
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Abstract
A weight controlled slip interlock system provides increased safety for a snubbing unit. Slips for a snubbing unit is operable between an open position and a closed position, and valves actuates the slips between the open and closed positions. Weight sensors are coupled to the slips, wherein the weight sensors measures the loads on the slips to determine whether one or more of the slips are controlling the weight of a workstring. Interlocks are coupled to the valves to prevent the valves from actuating from the closed position into the open position when the corresponding slip controls the weight of the workstring.
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