Apparatus and methods for tubular makeup interlock
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United States of America Patent
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Mar 1, 2011
Grant Date -
Apr 10, 2008
app pub date -
Oct 15, 2007
filing date -
May 17, 2001
priority date (Note) -
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Abstract
Apparatus and methods are provided to prevent an operator from inadvertently dropping a string into a wellbore during assembling and disassembling of tubulars. Additionally, the apparatus and methods may be used to for running in casing, running in wellbore components or for a drill string.
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