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首页> 外文期刊>Journal of Residuals Science & Technology >Synthesis and Evaluation of Anionic-Nonionic Surfactant for Oil Displacement in Low Permeability Reservoirs with High Temperature and High Salt
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Synthesis and Evaluation of Anionic-Nonionic Surfactant for Oil Displacement in Low Permeability Reservoirs with High Temperature and High Salt

机译：高温高盐低渗油藏驱油用阴离子-非离子表面活性剂的合成与评价

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Using nonylphenol and epoxy ethane as material, a new kind of nonionic surfactants (NPE3C) was synthesized by polymerization reaction and carboxymethylation reaction. The structure of the product was characterized by IR and 1HNMR. The salt and heat resistance of the surfactant was evaluated by laboratory experiment, and the oil displacement performance of the anionic-nonionic surfactant was evaluated by physical simulation. The results showed that the anion head and nonionic block in NPE3Csurfactant increased the temperature and salt resistance. As the increase of temperature or salinity, the oil-water interfacial tension become lower, it can reach 10-3mN/m low orders of magnitude in the condition of high salinity (100g/L) or high temperature (80oC). The oil displacement experiment shows that on the basis of water flooding, the surfactant increased the low permeability core recovery by 8. 6%. The surfactant system can meet the oil displacement requirements for some high temperature, high salt and low permeability reservoirs in Changqing
机译：以壬基酚和环氧乙烷为原料，通过聚合反应和羧甲基化反应合成了一种新型的非离子表面活性剂（NPE3C）。产物的结构通过IR和1HNMR表征。通过实验室实验评估表面活性剂的耐盐性和耐热性，并通过物理模拟评估阴离子-非离子表面活性剂的驱油性能。结果表明，NPE3C表面活性剂中的阴离子头和非离子嵌段提高了温度和耐盐性。随着温度或盐度的升高，油水界面张力降低，在高盐度（100g / L）或高温（80oC）的情况下，油水界面张力可达到10-3mN / m的低量级。驱油实验表明，在注水的基础上，表面活性剂使低渗透岩心采收率提高了8. 6％。表面活性剂体系可以满足长庆一些高温，高盐，低渗透油藏的驱油要求。

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