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盐度对Hydroxyapatite纳米颗粒洪水增强石油回收的影响:一种机械研究

Eugene N Ngouangna¹, Mohd Zaidi Jaafar^1,2, Mnam Norddin^1,2

¹Departmentii of Petroleum Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia.

|May 30, 2023

概括

酸 (HAP) 纳米颗粒通过改变岩石的湿透性和降低界面张力来增强石油回收. 这项研究验证了HAP合成,并证明了其在改善不同盐度下盐水洪水中油位移的有效性.

科学领域:

石油工程是石油工程中的一个.
材料科学材料科学材料科学
纳米技术纳米技术

背景情况:

液体-液体相互作用在增强的石油回收 (EOR) 中至关重要,特别是在纳米流体 (NF) 盐水洪水中.
纳米流体改变了可湿性,并降低了油水界面张力 (IFT),但纳米粒子 (NP) 制备和修改是性能的关键.
对于EOR应用,酸 (HAP) NP尚未得到广泛的验证.

研究的目的:

为了合成和表征Hydroxyapatite (HAP) 纳米粒子.
调查HAP NP对增强石油回收 (EOR) 过程的影响.
为了评估HAP NP在高温和不同盐度下的性能.

主要方法:

通过共同沉和现场表面功能化与二硫酸盐合成HAP.
使用传输电子显微镜,泽塔电位,热重力测量分析,FTIR,XRD,粒子大小分析和EDX进行表征.
在不同盐度条件下的砂岩核心插头中测量湿度变化和IFT减少.

主要成果:

成功合成稳定的HAPNP,在水溶液中均分散.
观察到HAP NP表面电荷与pH值变化的显著增加.
已证明的HAP NF (0.1 wt %) 改变了砂岩的湿透性,从油湿变为水湿 (接触角度从111.7°减少到9.0°).
实现了IFT减至3mN/m,并实现了原油原油的17.9%的增量回收.

结论:

在水溶液中,HAP NPs是有效合成和稳定的.
HAP NF有效地降低了IFT并改变了EOR至关重要的湿度.
HAP纳米流体泛滥显示出在一系列盐度中增强石油回收的巨大潜力.

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