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首页> 外文会议>European Symposium on Improved Oil Recovery >Applying the Hydrophilic - Lipophilic Deviation (HLD) Concept to Chemical EOR Formulations
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Applying the Hydrophilic - Lipophilic Deviation (HLD) Concept to Chemical EOR Formulations

机译：将亲水性 - 亲脂偏差（HLD）概念应用于化学EOR制剂

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Chemical EOR surfactant use is expected to grow rapidly as this tertiary recovery method has shown improved oil production in the laboratory and the field. However, choosing an optimal surfactant formulation is still a time consuming and expensive process. Formulators need an easy-to-use tool that allows them to rapidly narrow the choices of suitable surfactant systems that match field conditions. The Hydrophilic-Lipophilic Deviation (HLD) concept has been known as a fast screening method for chemical EOR formulations based on the characteristic of the surfactant. The HLD concept can be used to determine the characteristic curvature (Cc) of the surfactant and to predict the most suitable surfactant structure for an EOR formulation The HLD concept, therefore, indicates that surfactants of similar characteristic should have similar performance for a certain reservoir condition. To demonstrate the use of the HLD equation in selecting EOR formulations, the ASP flood in progress in the Mooney Field in north-central Alberta, Canada was used as a reference case. The surfactant currently being used in this field is a branched C1213 alcohol propoxy sulfate with Na2C03 The characteristic curvature of this surfactant was measured, and then set as a target for synthesis of similar performing surfactants with different structures. Three other surfactant structures were synthesized (with changing alcohol structure and degree of propoxylation) to match the target Cc, and the samples were characterized using fluids from the Mooney field. It was found that these four propoxylate sulfate surfactants of different structures showed comparable behavior in terms of interfacial tension reduction and microemulsion phase behavior The core flood tests of formulations using these four materials showed similar oil recovery efficiency under Mooney Field conditions. Therefore, this paper demonstrates that alkyl propoxylate sulfate surfactants of different molecular structures but similar characteristic show similar behavior and oil recovery performance. The finding of this work provides formulators with a guideline to not only quickly and effectively choose the most suitable surfactant in terms of performance but also in terms of feedstock availability.
机译：由于这种第三次回收方法显示了实验室和田地，预计化学EOR表面活性剂使用预计将迅速增长。然而，选择最佳表面活性剂配方仍然是耗时和昂贵的过程。配方仪需要易于使用的工具，允许它们快速缩小匹配现场条件的合适表面活性剂系统的选择。亲水性 - 亲脂性偏差（HLD）概念被称为基于表面活性剂特征的化学EOR配方的快速筛选方法。 HLD概念可用于确定表面活性剂的特征曲率（CC），并预测EOR配方的最合适的表面活性剂结构，因此HLD概念表明，类似特性的表面活性剂应具有类似的储层条件的性能相似。为了证明HLD方程在选择EOR配方中，加拿大北部艾尔伯塔北部的Mooney领域的ASP洪水被用作参考案例。目前在该领域中使用的表面活性剂是分支化的C1213醇丙氧基硫酸盐测量该表面活性剂的特征曲率，然后设置为合成具有不同结构的类似性表面活性剂的靶标。合成了三种其他表面活性剂结构（随着醇结构和丙氧基化程度）以匹配靶CC，并使用来自Mooney领域的流体表征样品。结果发现，在界面张力降低和微乳液相行为方面，这些四种丙氧基化硫酸盐表面活性剂在界面张力降低和微乳液相位行为中使用这四种材料的配方的核心泛洪试验在门尼条件下显示出类似的储油效率。因此，本文证明了不同分子结构的烷基普通苯甲酸烷基化硫酸盐表面活性剂，但相似的特征显示出类似的行为和采油性能。这项工作的发现提供了具有指导方针的配方者，不仅可以在性能方面不仅快速和有效地选择最合适的表面活性剂，而且在原料可用性方面也是如此。

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