Subsurface well apparatus
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United States of America Patent
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Jul 13, 1993
Issued Date -
N/A
app pub date -
Apr 23, 1992
filing date -
Jul 9, 1990
priority date (Note) -
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status (Latency Note)
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Abstract
Method and apparatus for actuating one or more downhole well tools carried by a production or work string conduit having an imperforate wall and for blocking fluid communication between an activating fluid body and a second fluid source within said well across dynamic seals between actuating members of the well tool, by producing selective signals through the conduit wall detectable by a member to produce an activating signal for actuating the downhole well tool by a downhole energy source.
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