Combination plug and setting tool with centralizers
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United States of America Patent
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Dec 6, 2016
Grant Date -
Jan 8, 2015
app pub date -
Jul 2, 2013
filing date -
Jul 2, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A series of down hole plugs are made from a common subassembly including, in some embodiments, a mandrel, a slips/seal section, a setting assembly and a mule shoe. To make the flow back plug, a ball check is placed in the mule shoe. To make the bridge plug, an obstruction is inserted in the mule shoe. To make the ball drop plug, the mule shoe is left unobstructed so any ball dropped in a well seats in a tapered inlet to the mandrel. To make a plug with a disintegratable check, a ball dropped in the well is of a type that disintegrated in frac liquids. Another embodiment is an improved adapter sleeve used on conventional setting tools.
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