Drilling fluid additive for reducing lost circulation in a drilling operation
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United States of America Patent
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Dec 17, 2013
Grant Date -
Aug 5, 2010
app pub date -
Jul 4, 2008
filing date -
Jul 6, 2007
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Abstract
Generally, the present invention provides drilling fluid additives for reducing or controlling lost circulation in a drilling operation. The additives comprises particles. The particles comprise one or more solids in association a wax or waxy substance. A drilling fluid comprising a drilling fluid additive of the invention is also provided, as well as a method and use of the drilling fluid additive in a drilling operation to reduce or control lost circulation. Methods for manufacturing the drilling fluid additives are also described.
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