基于分子动力学模拟技术的CO2加厚剂的选和评估
Zhenzhen Dong1, Tong Hou1, Shuiqing Hu2
1Xi'an Shiyou University, Xi'an, Xi'an 710065, China.
ACS omega
|May 5, 2025
概括
聚合物可以增加二氧化碳 (CO2) 洪水的粘度,改善石油回收. 分子动力学模拟显示,具有特定功能组的聚合物增强了二氧化碳粘度,减轻了粘性指纹等问题.
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
- 计算化学的计算化学
背景情况:
- 二氧化碳 (CO2) 泛滥是一种关键的增强石油回收 (EOR) 技术.
- 低二氧化碳粘度导致粘性指纹和重力覆盖,降低扫描和位移效率.
- 提高二氧化碳粘度对于提高二氧化碳泛滥性能至关重要.
研究的目的:
- 调查使用聚合物增加CO2粘度的可行性.
- 用分子动力学模拟来分析CO2+聚合物系统.
- 为了确定有效提高EOR的二氧化碳粘度的聚合物结构.
主要方法:
- 使用了分子动力学模拟.
- 模拟了五个CO2 + 聚合物系统:P-1-D,PVEE,PVAEE,Piso-BVE和四臂PVAc.
- 分析了分子间相互作用和粘度变化.
主要成果:
- 聚合物含有以太,乙酸和的功能组增强CO2粘度.
- 这些功能组限制了二氧化碳分子的运动,并减少了分子间力量.
- 四臂PVAc增加了CO2粘度的5.29倍;P-1-D增加了4.75倍.
结论:
- 聚合物可以有效地增加超临界CO2的粘度.
- 聚合物结构和功能组显著影响粘度增强.
- 优化聚合物选择对于提高二氧化碳在水库中的泛滥效率至关重要.
相关概念视频
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