SILICA GEL AS A VISCOSIFIER FOR SUBTERRANEAN FLUID SYSTEM
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United States of America Patent
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Mar 31, 2016
app pub date -
May 23, 2014
filing date -
May 23, 2014
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Abstract
This invention relates to a composition and method of fracturing subterranean formations utilizing a polymerized alkali silicate. The fracturing fluid includes an alkali silicate such as sodium silicate and an acid such as hydrochloric acid. The sodium silicate is polymerized to a silica gel using an acid. The resulting silica gel has a pH from about 2 to less than 7.5.
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