研究不同气体洪水在最低可变性压力和石油回收在一个低透性水库与中等粘性石油的研究
Hongda Hao1, Bihua Xian1, Mingguo Peng1
1School of Petroleum and Natural Gas Engineering, School of Energy, Changzhou University, Changzhou, Jiangsu 213164, China.
ACS omega
|March 17, 2025
概括
碳化合物气体泛滥对低透度,中等粘性油库最有效,与CO2,CH4和N2相比,显示出优异的油脂粘度降低和膨胀. 这种方法在最低的最小可混合压力下实现了最高的石油回收.
科学领域:
- 石油工程是石油工程中的一个.
- 增强石油回收的方法
- 储水库工程 储水库工程
背景情况:
- 气体泛滥被广泛用于增强轻油油库的石油回收 (EOR).
- 在具有中等粘性油的低透性水库中的应用较少,开发经验有限.
研究的目的:
- 为了评估气油相互作用,并优化气体泛滥策略,以中等粘性油的低透性水库.
- 为了比较不同气体 (碳化合物,CO2,CH4,N2) 在增强石油回收方面的有效性.
主要方法:
- 压力-体积-温度 (PVT) 分析用于研究气油相互作用.
- 精细管实验和数值模拟以确定最小可混合压力 (MMP).
- 核心洪水实验评估石油回收和分析产生的石油成分.
主要成果:
- 碳化合物气体与中等粘性油的相互作用最强,显著降低粘度,增加油胀.
- 与CO2,CH4和N2.2相比,碳化合物洪水显示MMP (28.5 MPa) 是最低的.
- 核心洪水实验中,碳化合物洪水产生的石油回收率最高 (57.02%),其次是CO2 (51.11%),CH4 (36.88%) 和N2 (21.35%).
结论:
- 碳化合物气体泛滥是用于含有中等粘性油的低透性储的最有效的EOR方法.
- 该研究为开发类似具有挑战性的油库提供了关键的技术见解.
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