Weight material for drilling fluids and method of creating and maintaining the desired weight
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United States of America Patent
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Jan 30, 2001
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N/A
app pub date -
Nov 13, 1998
filing date -
Nov 20, 1997
priority date (Note) -
Expired
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Abstract
Drilling fluid additives are designed to increase the density of drilling fluids while minimizing the increase in the resistance to flow of the drilling fluid. In particular, barite particles are added to the drilling fluid as a weight material where the barite particles include at least 85% by weight particles less than 75 microns and greater than 6 microns in equivalent spherical diameter.
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