Experiment investigation on stability of crude emulsion containing polymer

Asphaltene,resin and polymer content have a great influence on the stability of emulsion.After obtaining resins and asphaltenes from crude oil by polarity separation,we confect simulated oil emulsion by referring to the crude oil property of SZ 36-1 oilfield. The relationship among asphaltene,resin and polymer content is investigated by orthogonal design method. The increase of whichever asphaltene,resin or polymer content will promote the stability of emulsion under a certain condition. The ratio of asphaltene and resin content also makes significant impact on the stability of emulsion. The synergy between asphaltenes and resins is obvious in the emulsion system. And the influence of this synergy is greater than that of asphaltene content on the stability of emulsion.