Oil-based mud is mainly composed of mineral oil, water, primary and auxiliary emulsifier, filtrate reducers , weighting agent and plugging material.Oily mud adheres to rock cuttings to form oily drill cuttings, which belongs to national hazardous waste. Because of the stable characteristics of oil-based mud, high viscosity and complex components, the resource utilization of oil-based mud has not been well solved.
Hazard of oily cuttings:
Large production:one well can produce 200 ~ 300m3 oily cuttings ;
High oil content: high content of petroleum hydrocarbons and oil soluble mud additives;
Pollute water: oil directly poisons organisms, and forms oil wax to degrade water quality.
Pollute soil: Rainwater erosion cause oily cuttings into the soil;Oils inhibit plant growth.
Keywords: oily sludge hot washing, oily sludge pollution-free, oily sludge treatment, oily sludge reduction, oily sludge hot washing, oily sludge treatment,