Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Reexamination Certificate
2005-04-19
2005-04-19
Hruskoci, Peter A. (Department: 1724)
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
C175S066000, C210S710000, C210S712000, C210S714000, C210S727000, C210S728000, C210S776000, C210S806000, C516S146000, C516S179000
Reexamination Certificate
active
06881349
ABSTRACT:
A mobile apparatus and method for recycling an invert emulsion based drilling fluid, in which the invert emulsion based drilling fluid includes an oleaginous component and an aqueous component. The apparatus includes an emulsion breaking tank, a water treatment tank, a filter press, and hydrocarbon filters. The method includes: mixing said invert emulsion drilling fluid with a emulsion breaker, wherein the emulsion breaker is a mixture of an alkyl glucoside and an alkane sulfonate; and separating the oleaginous component of the invert emulsion drilling fluid from the aqueous component of the invert emulsion drilling fluid. The method preferably utilizes an emulsion breaker that is a combination of an anionic surfactant, a nonionic surfactant and an alkyl polyglycoside surfactant.
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International Search Report—International Application No. PCT/US 03/33612—International Filing Date Oct. 24, 2003—Applicant: M-I L.L.C.
Howrey Simon Arnold & White , LLP
Hruskoci Peter A.
M-I LLC
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