The influence of natural surfactants,such as asphaltenes,resins,solid particles and naphthene,on the stability of the water in crude oil emulsion are summarized.

• 综述了原油乳状液中天然表面活性物质,如沥青质、胶质、固体颗粒物以及石蜡对原油乳状液稳定性的影响。