Product and process for coating wellbore screens
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United States of America Patent
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May 28, 2002
Grant Date -
N/A
app pub date -
Jul 27, 2000
filing date -
Jul 27, 2000
priority date (Note) -
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Abstract
Coatings for well screens that protect the screens from damage as they are inserted into the wellbore and once in the well, release reactive materials to react with and degrade potentially plugging materials such as drill solids, fluid filtercakes, fluid loss additives, and drilling fluids. The coatings can be specifically designed for individual well conditions and are comprised of a binder that either melts or dissolves within the wellbore and one or more reactive materials such as acids, enzymes, surfactants, chelants, oxidizers or free radical generators and the like which are released into the screen and the near wellbore area and which are effective in degrading or dissolving materials which could potentially plug the screen.
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