注入计划对Johansen形成中的二氧化碳迁移和捕获效率的影响
Hai T Nguyen1,2
1Laboratory of Applied Physics, Science and Technology Advanced Institute, Van Lang University, Ho Chi Minh City, Vietnam.
PloS one
|December 31, 2025
概括
在盐水层中储存二氧化碳 (CO2) 的注入计划对捕获效率的长期影响最小. 储水池的特性,而不是注入率,决定了1000年内最终的储存安全性.
科学领域:
- 地质科学 地质科学
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 在盐水层中优化二氧化碳 (CO2) 储存对于减缓气候变化至关重要.
- 注射时间表被提出作为一种提高二氧化碳储存效率的方法,但其长期影响尚不清楚.
研究的目的:
- 评估不同注入计划对盐水层中二氧化碳捕获效率的长期影响.
- 为了比较羽毛的迁移,底孔压力 (BHP) 的演变,以及各种注射策略下的捕获机制.
主要方法:
- 利用了约翰森构成的场校准垂直平衡模型.
- 在1000年 (注射和注射后阶段) 中模拟了四种注射策略 (恒定,升级,脉冲,低稳定).
- 评估了羽毛迁移,BHP,并将其分为残留物和可溶性捕获.
主要成果:
- 注射时间表显著影响短期注射能力和峰值BHP (高达80 bar的差异).
- 千年规模的捕获效率在所有时间表中显示微不足道的差异 (<2%的总质量).
- 1000年后,二氧化碳的分布是相似的:57-58%溶解,30-34%的残留捕获,8-9%的移动羽毛.
结论:
- 在连接良好的含水层中,长期的二氧化碳储存安全性主要取决于储库特性和溶解,而不是注入时间表.
- 注射时间表更适合短期压力管理和运行安全.
- 结果为设计二氧化碳储存项目和监管评估提供了实际指导.
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