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作为EOR化学品在砂岩和碳酸盐中的本地合成的Zwitterionic表面活性剂

Xiao Deng¹, Mohammed B Alotaibi², Mohanad Fahmi²

¹Center for Integrative Petroleum Research, King Fahd University of Petroleum & Minerals, 31261 Dhahran, Saudi Arabia.

|October 28, 2024

概括

局部合成的zwiterionic表面活性剂显示出极好的溶解性和可湿性变化,特别是印第安纳州石灰岩上的ZW6,将油湿岩石转化为水湿条件以提高石油回收.

科学领域:

石油工程是石油工程中的一个.
表面化学表面化学

背景情况:

基表面活性剂以其降低界面张力 (IFT) 和修改岩石浸湿性的有效性而闻名.
优化表面活性剂性能以提高石油回收 (EOR) 需要了解它们在储条件下的行为.

研究的目的:

评估在比利亚沙岩和印第安纳州石灰岩中合成的特基表面活性剂的可溶性和可湿性改变能力.
调查表面活性剂结构,度和盐水成分对可湿性修改的影响.

主要方法:

接触角度测量以量化湿透性.
扫描电子显微镜 (SEM) 和热重力测量分析 (TGA) 以阐明变化机制.
测试Zeta电位测试,以评估表面电荷的特性.

主要成果:

在六种合成的表面活性剂中,有五种表现出高效溶解度 (在去离子化水中为1.0重%).
表面活性剂ZW6在印第安纳州的石灰岩上表现出色,使得湿度从油湿 (162°) 转变为水湿 (62.9°).
表面活性剂的性能取决于度,并受到盐水成分 (NaCl,CaCl2,Na2SO4,MgCl2) 的影响,疏水尾部组损害了变化.

结论:

合成的zwi-terionic表面活性剂,特别是ZW6,由于具有良好的溶解性和显著的可湿性变化,对EOR应用具有前途.
岩石湿度的变化受到表面活性剂结构和盐水化学的影响,但与石溶解没有直接相关.

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