CNOOC China Ltd. Tianjin,300452 Tianjin
In this paper, the dendrimer was synthesized by the design of modification of Dendrimer polyamide-amine, which was carried out by alternating Michael addition and amidation reaction, and then the dendrimer was grafted onto the active end group of dendrimer, a novel water soluble or oil soluble dendrimer multibranched non-polyether demulsifier was prepared. The purity of the product was determined by Gel Chromatography, and the structure of the demulsifier was characterized by IR. The field test results show that the series of demulsifiers have excellent demulsifying performance when treating the produced fluid containing polymer in the manifold of crude oil in CK oilfield, and can obviously improve the quality of the demulsified water, and the emulsified layer of the upper oil is lower after demulsifying, after dehydration, the emulsified layer is reduced by about 50% . This product has a good field application prospect to realize the high-efficiency treatment of polymer-containing produced fluid.