Application of scleroglucan muds to drilling deviated wells
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United States of America Patent
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Jul 19, 1994
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app pub date -
Oct 13, 1992
filing date -
Dec 21, 1990
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Abstract
A method for drilling deviated or horizontal wells is facilitated by the use of a scleroglucan-containing aqueous drilling mud. The use of such drilling muds is environmentally and economically advantageous over the use of oil-based drilling muds and is superior to the use of other aqueous-based drilling muds in terms of lubricating power and carrying capacity. Preferably the drilling mud contains unrefined scieroglucan.
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