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It has been reported that the oil dispersible polymethylsilsesquioxane (PMSQ) microsphere can effectively improve the flow behavior of the waxy crude oil through the spacial hindrance effect. Because of the complex composition of the crude oil, in this work, model waxy oil is used to further investigate the effects and mechanisms of PMSQ microspheres on influencing the rheology of the waxy oil. The...
In a previous work, the addition of the polymethylsilsesquioxane (PMSQ) microsphere (50–400ppm) can improve the flow behavior of waxy crude oil through the spacial hindrance effect. However, the flow improving efficiency of the neat PMSQ microsphere is not as good as the traditional polymeric pour point depressants (PPDs). In this paper, the effect of the ethylene-vinyl acetate copolymer (EVA2806)...
Application of nanocomposite pour point depressants to improve the rheology of waxy crude oil is a novel and efficient technique and receives much attention. However, the effects of nano and microparticles alone on the rheology of waxy crude oil are unclear up to now. In this paper, monodispersed PMSQ microspheres with different sizes (200nm–10µm) were successfully synthesized through a two-step sol-gel...
The novel and effective nanocomposite PPD has garnered attention for its potential application in pipelines transporting waxy crude oil. In this paper, melt blending method was used here to prepare the poly(octadecyl acrylate) (POA)/clay nanocomposite PPD, which shows much better performance on waxy crude oil. The effects of the POA and POA/clay nanocomposite PPDs on the structural properties of gelled...
Introduction of nanomaterials constitutes a novel and efficient means to enhance the performance of polymeric pour point depressants (PPDs). Based on the specific layered structure and favorable cationic exchange characteristics of nano-clay particles in the presence of charged organic compounds, an original hydrophilic nano-clay is first modified by octadecyl trimethyl ammonium chloride (OTAC) and...
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