Drill bit lubricant utilizing a sulfur-phosphorous EP agent
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United States of America Patent
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Issued Date -
May 17, 2007
app pub date -
Nov 14, 2005
filing date -
Nov 14, 2005
priority date (Note) -
Abandoned
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Abstract
A lubricant is shown and described. The lubricant includes about 1 to 15 weight percent of a sulfur-phosphorus extreme pressure agent, about 5 to 40 weight percent of a thickener, preferably a metal-complex soap, and a basestock. The basestock may be a mineral oil, a synthetic oil, or a combination thereof. Lubricant additives such as corrosion inhibitors, oxidation inhibitors, and anti-wear agents may also be added.
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