Secondary barrier for use in conjunction with an isolation device in a horizontal wellbore
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United States of America Patent
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Mar 8, 2016
Grant Date -
Apr 17, 2014
app pub date -
Oct 16, 2012
filing date -
Oct 16, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A secondary barrier for use in conjunction with an isolation device in a portion of a non-vertical wellbore comprises: a swellable material, wherein the swellable material: (A) has dimensions such that, prior to swelling, the secondary barrier is capable of being placed into the portion of the non-vertical wellbore, and (B) fills a void within the portion of the non-vertical wellbore, wherein the swellable material fills the void after the swelling of at least a portion of the swellable material has occurred, wherein the secondary barrier is positioned adjacent to the isolation device in the portion of the non-vertical wellbore. A method of creating a secondary barrier comprises: introducing the secondary barrier into the portion of the non-vertical wellbore; and contacting or allowing the swellable material to come in contact with the swelling fluid or the increase in temperature.
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