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首页> 外文期刊>Journal of Applied Polymer Science >Polystyrene nanoparticles as surfactant carriers for enhanced oil recovery
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Polystyrene nanoparticles as surfactant carriers for enhanced oil recovery

机译：聚苯乙烯纳米颗粒作为表面活性剂载体以提高采油率

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摘要

It is well known that oil recovery processes can be increased by surfactant solution injections in the reservoir. However, the high adsorption of this type of compounds on the reservoirs rocks surface is one of the factors that have been preventing the Enhanced Oil Recovery (EOR) development and the economicity of the process. This work presents the synthesis of crosslinked polystyrene nanoparticles (PSNP) and their evaluation as surfactant carriers, able to percolate through the reservoirs pores and to deliver it at the water/oil interface. The nanoparticles were synthesized by emulsion polymerization of styrene and divinylbenzene in the presence of nonylphenol ethoxylate-10 (NF-10EO) or sodium dodecyl sulphate. Photon Correlation Spectroscopy and Interfacial Tension results gave support to the initial supposition that the nanoparticles would swell when in contact with the oil phase, releasing the surfactant at the interface. The nanoparticles obtained with NF-10EO were able to reduce the water/oil interfacial tension to values that were similar to the ones obtained with the aqueous solution of NF-10EO. The results suggest that the PSNP have a great potential to be used as surfactant carriers in EOR. (C) 2016 Wiley Periodicals, Inc.
机译：众所周知，可以通过在储层中注入表面活性剂溶液来提高采油过程。然而，这类化合物在储层岩石表面上的高吸附是阻碍提高采收率（EOR）发展和该过程的经济性的因素之一。这项工作介绍了交联聚苯乙烯纳米颗粒（PSNP）的合成及其作为表面活性剂载体的评估，该表面活性剂能够渗透穿过储层的孔隙并将其传递至水/油界面。在壬基酚乙氧基化物-10（NF-10EO）或十二烷基硫酸钠的存在下，通过苯乙烯和二乙烯基苯的乳液聚合来合成纳米颗粒。光子相关光谱法和界面张力结果为最初的假设提供了支持，即当纳米粒子与油相接触时会溶胀，从而在界面处释放表面活性剂。用NF-10EO获得的纳米颗粒能够将水/油界面张力降低到类似于用NF-10EO水溶液获得的值。结果表明，PSNP具有很大的潜力，可以用作EOR中的表面活性剂载体。 （C）2016威利期刊公司

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