Breaker fluids and methods of using the same
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United States of America Patent
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Jul 24, 2012
Grant Date -
Dec 2, 2010
app pub date -
Nov 24, 2008
filing date -
Nov 30, 2007
priority date (Note) -
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Abstract
A method of cleaning a wellbore drilled with a drilling fluid that forms a filter cake that includes emplacing a breaker fluid into the wellbore, the breaker fluid comprising: an aqueous fluid; a fragmentation agent; and an amphoteric chemotrope; and shutting in the well for a period of time sufficient to initiate breaking of the filter cake is disclosed.
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