关于在蒸汽洪水期间在未结合的砂岩中矿物溶解率的预测模型的研究
Yigang Liu1,2, Wei Zhang1,2, Liguo Zhong3
1CNOOC Key Laboratory of Offshore Heavy Oil Thermal Recovery, Tianjin 300461, China.
ACS omega
|September 22, 2025
概括
沉重油库中的高温蒸汽泛滥导致矿物溶解,改变了形成的透性. 这项研究开发了一个模型,预测未巩固的砂岩中的矿物溶解率,这对于优化蒸汽洪水策略至关重要.
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
- 储水库工程 储水库工程
背景情况:
- 沉重油库通常由未结合的砂岩组成.
- 蒸汽泛滥操作涉及高温 (200300°C) 和特定的蒸汽质量 (00.6).
- 高温蒸汽可以溶解水库矿物质,影响形成的透性.
研究的目的:
- 在模拟蒸汽洪水条件下,研究未结合的砂岩中的矿物溶解特性.
- 开发一种预测模型,用于矿物溶解速度,以应对蒸汽洪水参数.
- 为优化蒸汽洪水水库开发提供理论支持.
主要方法:
- 进行了装满沙子的管道实验,模拟高强度蒸汽洪水.
- 在实验之前和之后,在生产的水和沙子样本中分析溶解的矿物质.
- 使用博尔茨曼分布和密度模型开发了一种矿物溶解率预测模型.
主要成果:
- 蒸汽注入温度,蒸汽质量和注入孔积 (PV) 数量影响矿物溶解速率.
- 蒸汽注入温度是控制矿物溶解程度的主要因素.
- 开发的模型准确地预测了矿物溶解速率,与实验数据保持一致.
结论:
- 矿物溶解是在未结合的砂岩中蒸汽淹没时的重要过程.
- 开发的预测模型为水库工程和开发方案设计提供了宝贵的见解.
- 了解和建模矿物溶解对于有效的重油回收至关重要.
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