Boring or penetrating the earth – Processes – Boring with specific fluid
Reexamination Certificate
2004-12-01
2008-03-04
Suchfield, George (Department: 3676)
Boring or penetrating the earth
Processes
Boring with specific fluid
C134S025100, C134S025500, C134S105000, C175S206000, C175S207000, C210S770000, C210S771000, C588S900000
Reexamination Certificate
active
07337860
ABSTRACT:
Drill cuttings associated with drilling fluid are thermally cleaned. The wet cuttings are fed into a vessel chamber having mechanical mixers, such as ribbon blenders, extending lengthwise of the chamber. Direct heating is applied to the chamber contents by introducing hot combustion gas from a heater. A combination of direct heating and mechanical back mixing of wet colder cuttings with drier hotter cuttings results in conditioning and conduction heating of the wet cuttings. The drilling fluid is evaporated and removed as gas. Dried cuttings are separately recovered. Caking and agglomeration of the solids is reduced.
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Clean Cut Technologies Inc.
Marsh & Fischmann & Breyfogle LLP
Suchfield George
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