Earth boring – well treating – and oil field chemistry – Well treating – Contains organic component
Reexamination Certificate
2009-01-15
2010-06-29
Gulakowski, Randy (Department: 1796)
Earth boring, well treating, and oil field chemistry
Well treating
Contains organic component
C166S305100
Reexamination Certificate
active
07745380
ABSTRACT:
A method of treating a wellbore that includes circulating a wellbore fluid in the wellbore, wherein the wellbore fluid comprises an oleaginous base fluid and a wellbore additive colloidal solid material, and wherein the wellbore additive colloidal solid material is formed by grinding a solid particulate material and a polymeric dispersing agent for a sufficient time so that the polymeric dispersing agent is absorbed to the surface of the resulting colloidal solid particles and less than 10% of the resulting colloidal solid particles have a diameter greater than 10 microns, but not more than five percent of the particles are less than 0.2 micron in diameter, wherein the grinding is carried out in the presence of an oleaginous base fluid and wherein the grinding is carried out so that the wellbore additive colloidal solid material has a weight average particle diameter d50less than 2.0 microns.
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Bradbury Andrew J.
Clary Sonny
Heinz Tom
Reid William M.
Sawdon Christopher A.
Gulakowski Randy
M-I L.L.C.
Toscano Alicia M
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