METHODS FOR TREATING SUBTERRANEAN FORMATIONS
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United States of America Patent
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Oct 13, 2016
app pub date -
Nov 26, 2013
filing date -
Nov 26, 2013
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Fluid compositions comprising water, at least one water soluble polymer, degradable particles or nondegradable particles or both, and degradable fibers have utility as temporary lost circulation prevention systems. The compositions may be placed in a borehole such that they contact perforations, formation cracks, fissures, vugs or combinations thereof. The compositions form a plug or filtercake that minimizes flow between the wellbore and the formation. After completion of the well operation, the fibers degrade and the plug or filtercake weakens and may be washed away, thereby reestablishing fluid flow between the wellbore and the formation.
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