富含CO2的CBG井的生产特征和吸附控制机制
Zeyuan Sun1, Xiaodong Zhang2,3, Caifang Wu4,5
1School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo, 454003, Henan, China.
研究富含二氧化碳 (CO2) 的煤床气 (CBG) 田发现,二氧化碳度,温度和压力影响了气体生产. 较高的二氧化碳会延长突破,但会扩大产量,而温度会影响更深层层的吸附.
科学领域:
- 地质科学 地质科学
- 石油工程是石油工程中的一个.
- 环境科学 环境科学
背景情况:
- 煤床气 (CBG) 油田通常含有高度的二氧化碳 (CO2) 以及甲 (CH4).
- 了解二氧化碳对CBG生产的影响对于在这种环境中开发资源至关重要.
研究的目的:
- 在富含二氧化碳的煤田中调查CBG井的生产力规律.
- 分析热力学因素对气体吸附和生产能力的影响.
主要方法:
- 对CBG井生产的数值模拟.
- 对影响气体吸附的热力学因素 (温度和压力) 的分析.
- 在中国海西煤矿进行的研究,这是一个富含二氧化碳的地区.
主要成果:
- 增加的二氧化碳度延长了气体突破时间,最初增加,然后减少气体产量.
- 在浅水深处,压力占主导地位,增强吸附和生产,但二氧化碳与CH4竞争,阻碍了脱吸.
- 深层层的高温抑制吸附,降低气体含量,促进CH4脱吸.
结论:
- CBG的生产是由二氧化碳度,温度和气体吸附压力的相互作用决定的.
- 高度的二氧化碳导致更慢的突破,但更长的生产周期.
- 富含二氧化碳的CBG资源的最佳开发策略需要考虑这些热力学和组成因素.
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