在碳酸盐储中的酸岩反应过程的孔尺度数值模拟
Dongxu Zhang1,2, Yaqi Li1, Tongtong Luo3
1College of Energy, Chengdu University of Technology, Chengdu, Sichuan 610059, China.
ACS omega
|August 12, 2024
概括
这项研究模拟了孔尺度上的酸岩反应,以了解碳酸盐储酸化. 它揭示了五种溶解模式,以及虫洞如何影响酸化效率,以提高石油回收率.
科学领域:
- 石油工程是石油工程中的一个.
- 地质化学 地质化学
- 流体动力学 流体动力学
背景情况:
- 酸化对于通过溶解来增强碳酸盐储中的石油回收至关重要.
- 了解孔尺度酸岩相互作用是优化这一过程的关键.
研究的目的:
- 建立一个数值模型,以孔尺度的酸岩反应流.
- 分析碳酸储中的酸流行为和溶解机制.
主要方法:
- 开发了一个孔尺度数值模型,集成相场和组件传输.
- 使用达西-布林克曼-斯托克斯和任意拉格朗日-欧勒方法验证了模型.
主要成果:
- 确定了五种主要的溶解模式:均,紧,形虫洞,主导虫洞和分支虫洞.
- 证明微裂分布影响酸流和反应.
- 通过虫洞突破,通过将酸导向到出口,显著降低了酸化的有效性.
结论:
- 孔尺度溶解模式显著影响碳酸盐储中的酸化效率.
- 准确的孔尺度酸岩反应建模对于有效的碳酸盐水库开发至关重要.
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