基于水固体界面湿度控制的新型阳离子-非阳离子表面活性剂,用于剩余油开发.
Lin Li1,2, Yue Sun1,2, Xiao Jin1,2
1Shandong Key Laboratory of Oilfield Chemistry, Department of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China.
ACS omega
|June 19, 2023
概括
一种新的表面活性剂,酸劳拉乙醇胺硫酸盐 (HLDEA),有效地将油湿岩层表面逆转为水友性,通过控制油固体接口,显著提高了剩余油的回收率.
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
- 材料科学 材料科学 材料科学
背景情况:
- 接触原油会在岩石上形成不可逆转的青层,形成残留油膜,由于强烈的油固体粘附,阻碍了油的回收.
- 提高石油回收率至关重要,但剩余油膜在传统方法中构成重大挑战.
研究的目的:
- 为了合成和评估一种新的离子-非离子表面活性剂, Laurate 乙醇胺硫酸盐 (HLDEA),用于增强石油回收.
- 调查HLDEA控制湿度和减少油固体粘附的能力,以有效地取代剩余油.
主要方法:
- 通过将硫酸组引入劳拉酸二甲醇胺 (LDEA) 通过威廉森乙化,合成HLDEA.
- 使用接触角测量评估HLDEA对岩石湿透性的影响.
- 评估HLDEA在高盐度条件下增强石油回收方面的表现.
- 纳米机械实验分析HLDEA吸附及其对油固体粘附的影响.
主要成果:
- HLDEA成功地将岩石的湿度从油性 (54.7°接触角度) 转变为强烈的水性 (155.9°水下接触角度).
- 在高盐度 (2.6×104 mg/L) 的情况下,HLDEA表现出极好的盐耐受性和提高了19.24%的油脂回收率.
- 纳米机械测试证实了HLDEA在核心表面的吸附,调节微湿,减少粘合力,从而有效地去除油.
结论:
- 合成的HLDEA表面活性剂有效地控制了油固体接口的湿透性,使其成为增强剩余油回收的有希望的代理.
- 对于高效的油田开发,HLDEA的高盐耐受性和改变岩石湿透性的能力具有实际意义.
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