Process for well cleaning
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United States of America Patent
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app pub date -
May 30, 2008
filing date -
Mar 1, 2002
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Abandoned
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Abstract
Disclosed is a method for treating an oil or gas well having a wellbore that includes the steps of forming a solvent-surfactant blend by combining a solvent and a surfactant, adding a diluent to the solvent-surfactant blend to form an emulsified solvent-surfactant blend; combining the emulsified solvent-surfactant blend with a water-based carrier fluid to form a well treatment microemulsion, and injecting the well treatment microemulsion into the oil or gas well. In a preferred embodiment, the step of forming a solvent-surfactant blend includes combining a surfactant with a solvent selected from the group consisting of terpenes and alkyl or aryl esters of short chain alcohols.
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