Patent ID: 7507344
Filing Date: 2009-03-24
Classification: B01D,C02F,C09K,C10G,E21B,Y02P

Abstract:
1. A method of cleaning slop water, wherein the slop water comprises a water component emulsified with an oleaginous component, the method comprising: feeding the slop water and an emulsion breaker into an emulsion breaking tank of an apparatus for recycling drilling fluid, wherein the apparatus for recycling drilling fluid comprises: mixing the slop water with the emulsion breaker in the emulsion breaking tank, wherein the emulsion breaker is a mixture of a non-ionic surfactant and an anionic surfactant; separating the water component of the slop water from the oleaginous component of the slop water; mixing the water component in the water treatment tank with the flocculation materials to produce a treatment sludge and a treatment water; skimming the treatment water from the water treatment tank; passing the treatment water through the hydrocarbon filters; and discharging the treatment water.