SAFETY JOINT FOR A TOOL STRING
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United States of America Patent
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Issued Date -
Sep 10, 2015
app pub date -
Mar 6, 2014
filing date -
Mar 6, 2014
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
A safety joint includes two tubular joint bodies. A plurality of circumferentially spaced first holes is formed in one tubular joint body and at least a second hole is formed in the other tubular joint body. The tubular joint bodies each have threaded sections. The threaded sections and holes are configured such that the at least one second hole is aligned with one of the first holes when a threaded connection is formed between the threaded sections. A shear pin is inserted into the aligned holes. Instead of providing the circumferentially spaced first holes in one of the tubular joint bodies, the circumferentially spaced first holes may be provided in a torque ring that is coupled to one of the tubular joint bodies by a threaded connection. The hole alignment could then be between the tubular joint body having the second hole and the torque ring.
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