Importance

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Abstract

A product, system and method for treating a well bore using a concentrated treatment composition enclosed in a soluble container. The composition-filled container is deposited in the well, preferably through the drill string, followed by a solvent, such as drilling mud or water, to form a circulating solution characterized by the ability to circulate through the well. Most of the circulating solution is recovered at the surface using a mud tank, for example. In a well 'sweeping' operation a partially hydrolyzed polyacrylamide powder in a soluble tube is dropped down the drill string. The well bore is then flushed with water or drilling mud to form the liquified polymer down hole. The well is flushed with more water or mud to sweep the cuttings and polymer solution from the well bore.

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First Claim