Linear indexing apparatus and methods of using same
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United States of America Patent
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Oct 27, 1998
Issued Date -
N/A
app pub date -
Jun 20, 1996
filing date -
May 2, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A linear indexing apparatus and associated methods of using same provide convenient operation of tools in a subterranean wellbore. In a preferred embodiment, a linear indexing apparatus has an outer tubular housing and a tubular mandrel axially slidably disposed within the housing. Two sets of slips are utilized to incrementally displace the mandrel relative to the housing. A piston associated with one of the sets of slips permits the mandrel to be incrementally indexed in response to a series of repeated applications of a predetermined differential pressure.
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