Liquid purification or separation – Processes – Separating
Reexamination Certificate
2006-04-11
2008-11-25
Hruskoci, Peter A. (Department: 1797)
Liquid purification or separation
Processes
Separating
C175S066000, C210S787000, C494S037000, C494S901000
Reexamination Certificate
active
07455783
ABSTRACT:
A method for removing low gravity solids from an oil-based drilling fluid includes directing the drilling fluid into a first inlet of a first line in fluid communication with a centrifuge, injecting steam into the drilling fluid through a second inlet in the first line, wherein the second inlet is upstream from the centrifuge, directing the commingled drilling fluid and steam into the centrifuge, rotating the centrifuge at a rotational speed sufficient to separate solids from liquids, collecting solids from a solids discharge, and collecting effluent from an effluent outlet, wherein the effluent has low gravity solids in an amount less than 1.5%.
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Browne Neale
Ivan Catalin
Hruskoci Peter A.
M-I L.L.C.
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