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首页> 外文期刊>Energy & fuels >A Novel Surfactant-Polymer/Alkaline-Surfactant-Polymer Formulation for Enhanced Oil Recovery (EOR) Processes
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A Novel Surfactant-Polymer/Alkaline-Surfactant-Polymer Formulation for Enhanced Oil Recovery (EOR) Processes

机译:用于提高采油率(EOR)工艺的新型表面活性剂-聚合物/碱性-表面活性剂-聚合物配方

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摘要

An extensive investigation into the applicability of poly(vinyl alcohol) (PVA) and its synergy with rhamonolipid (a surfactant-active agent) and/or an alkali (NaOH) was carried out to evaluate and define the best fluid formulation for enhanced oil recovery (EOR) processes. First, the effects of molecular weight, concentration, and temperature of the PVA solution on surface tension (ST), interfacial tension (IFT), apparent viscosity, and thermodynamic stability were determined. Then, a systematic formulation of PVA combined with rhamonolipid and NaOH in reconstructed brine from an Angolan offshore field was developed. The IFT experiment was carried out on crude oil samples obtained from Block T of the Angolan offshore field. The combined PVA-rhamonolipid and NaOH-rhamonolipid-PVA in saline medium reduced the ST and IFT to 25.90 and 0.73 mN/m, respectively. The values of ST are better than the ones reported in the literature, which are within the range of 27-35 mN/m, while the IFT values are within the range reported in the literature, which is below 1 mN/m. This provides an opportunity to use this new synergistic formulation in EOR processes, particularly in offshore Angolan oilfields.
机译:对聚乙烯醇(PVA)的适用性及其与鼠李糖脂(表面活性剂-活性剂)和/或碱(NaOH)的协同作用进行了广泛研究,以评估和确定提高采油率的最佳流体配方(EOR)流程。首先,确定PVA溶液的分子量,浓度和温度对表面张力(ST),界面张力(IFT),表观粘度和热力学稳定性的影响。然后,开发了在安哥拉近海油田重建的盐水中结合了鼠李糖脂和NaOH的PVA的系统配方。 IFT实验是对从安哥拉近海油田T区块获得的原油样品进行的。在盐水培养基中合并的PVA-鼠李糖脂和NaOH-鼠李糖脂-PVA分别将ST和IFT降低至25.90和0.73 mN / m。 ST的值优于文献报道的值,在27-35 mN / m的范围内,而IFT值在文献报道的范围内,低于1 mN / m。这提供了在EOR过程中使用这种新的协同配方的机会,特别是在安哥拉近海油田。

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  • 来源
    《Energy & fuels》 |2020年第2期|1230-1239|共10页
  • 作者

  • 作者单位

    Sonangol Acad Petrotechn & Engn Sch Luanda Angola;

    Sch Engn Aberdeen Scotland;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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