Methods and compositions for clay control
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United States of America Patent
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Jun 24, 2014
Grant Date -
Nov 15, 2012
app pub date -
May 12, 2011
filing date -
May 12, 2011
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Abstract
Stabilizing a subterranean formation containing water-sensitive clays with methods including introducing a leading-edge fluid comprising a first base fluid and a first clay stabilizer solution wherein the first clay stabilizer is present in the first base fluid at a first concentration; and then introducing a treatment fluid comprising a second base fluid and a second clay stabilizer solution wherein the second clay stabilizer is present in the second base fluid at a second concentration, wherein the first concentration of clay stabilizer solution is higher than the second concentration of clay stabilizer solution.
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