Borehole fluid containing a lubricating composition--method for verifying the lubrification of a borehole fluid--application with respect to fluids with a high ph
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United States of America Patent
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Jun 15, 2004
Grant Date -
N/A
app pub date -
Dec 12, 2000
filing date -
Jun 12, 1998
priority date (Note) -
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Abstract
The present invention relates to a borehole fluid comprising a lubricating compound containing at least one amphiphilic non-ionic compound obtained by reacting at least one vegetable oil or fatty acid as such or in a polymerized state on at least one amino alcohol. In one variant, the compound can be mixed with a solvent. The invention also relates to a method for verifying the lubrication power of a water-based fluid. The invention further relates to the application of said method to borehole fluids with a high pH.
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