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关于重油中青合物诱导的油中的水乳液稳定性的实验研究

Fatemeh Mahmoudi Alemi¹, Saber Mohammadi²

¹Petroleum Engineering Department, Research Institute of Petroleum Industry (RIPI), Tehran 14856-13111, Iran.

|April 21, 2025

概括

水油乳液的稳定性对于石油回收至关重要. 这项研究发现,形成水在高压,高温条件下增强稳定性,而油水比率显著影响稳定性,特别是在增强石油回收 (EOR) 策略中.

科学领域:

石油工程是石油工程中的一个.
物理化学物理化学
体科学体科学体科学

背景情况:

乳液稳定性对于石油回收和运输至关重要.
在不同的条件下预测和控制乳液的行为,特别是高压,高温 (HPHT),是具有挑战性的.
青和界面张力 (IFT) 在乳液稳定性中起着关键作用.

研究的目的:

为了研究水油乳液的形成和稳定性在大气和HPHT条件下.
评估青和IFT对乳液稳定性的影响.
了解形成水在缓解青相关挑战中的作用.

主要方法:

在大气和HPHT条件下进行了乳液稳定性测试.
使用原油,形成水,蒸水和活油进行了界面张力 (IFT) 测量.
在形成水的存在下分析了青沉.

主要成果:

乳液在大气条件下显示出一致的长期稳定性.
在HPHT条件下,乳液稳定性因油水比而异 (75:25暂时稳定;50:50和25:75不稳定).
在HPHT条件下,IFT显著下降,表明了热力学效应;形成水减少了青沉和提高了稳定性.

结论:

乳液稳定性高度依赖于容器条件 (压力,温度,油成分,水化学).
形成水对于改善乳液稳定性和减少青物质问题至关重要.
根据特定条件定制增强石油回收 (EOR) 策略对于优化石油排水和回收率至关重要.

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