Process for the preparation of fluid loss additive and gel breaker
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United States of America Patent
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Jan 22, 1991
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N/A
app pub date -
May 18, 1989
filing date -
May 18, 1989
priority date (Note) -
Expired
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Abstract
A melted polymer of hydroxyacetic acid with itself or with other hydroxy-, carboxylic acid-, or hydroxycarboxylic acid-containing moieties is subjected to high shear and injected into an organic liquid which is inert to the polymer to form an organic liquid dispersion of very fine polymer particles. In one aspect the melted polymer is combined with the organic liquid and the combination is thereafter subjected to high shear to form the fine particle polymer dispersion. A dispersion agent may also be used to aid in dispersing the particles. The dispersion is used for fluid loss control and gel breaking in subterranean formations.
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