Lateral liner tie back system and method
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United States of America Patent
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Jul 22, 2014
Grant Date -
Nov 14, 2013
app pub date -
May 9, 2012
filing date -
May 9, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A lateral liner tie back system and method includes a base sub having a tapered upper end surface. The base sub may be positioned in a main bore at a window to a lateral bore. The tapered upper end surface of the base sub may direct a junction sub from the main bore partially into the lateral bore such that an end of an existing liner positioned within the lateral bore is disposed within a central bore of the junction sub. The system may also include a tie back sub that is lowered through the junction sub into the lateral bore. The tie back sub includes threads for engaging the end of the existing liner in the lateral bore. The lateral liner tie back system may selectively direct a tool that is lowered in the main bore into the lateral bore or prevent the tool from entering the lateral bore.
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