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具有动态滑动因子的煤炭双介质透性模型:结合异质性,应力和吸附效应
Yuhan Tang1, Bobo Li1,2,3, Jianhua Li1
1College of Mining, Guizhou University, Guiyang, Guizhou 550025, China.
Langmuir : the ACS journal of surfaces and colloids
|January 23, 2026
概括
这项研究引入了煤炭透性的新模型,这对于煤床甲提取至关重要. 它揭示了有效应力是透性变化的主要驱动因素,滑动效应发挥了动态作用.
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.
- 材料科学 是一种材料科学.
背景情况:
- 精确预测煤炭透性对于高效的煤床甲 (CBM) 提取至关重要.
- 传统模型经常忽视矩阵透性,使用经验滑动因子,不充分权衡多个影响机制.
- 了解动态透性变化是优化CBM恢复和水库管理的关键.
研究的目的:
- 为煤炭开发一种双介质的表面透性模型,该模型包含异质性,应力,吸附和滑动效应.
- 量化异质性和压力对滑动因子的调节机制.
- 分析异质性,应力,吸附和滑动对煤炭透率变化的影响,并评估它们的相对贡献.
主要方法:
- 为煤炭开发一种新的双介质表面透性模型.
- 对滑动因子的异质性和应力影响的量化.
- 在不同的粗度,碎形尺寸,有效应力和气体压力条件下分析透性变化.
主要成果:
- 穿透性随着粗度的增加而降低,这种效应被更高的有效应力放大.
- 有效应力通过缩小孔隙和断裂口径显著降低透性.
- 异质性和有效应力共同影响滑动效应,有效应力是减少透性的主要因素.
- 滑动和应力对透性的影响之间的相互作用是压力依赖的,在低压下滑动占主导地位,在高压下应力占主导地位.
结论:
- 开发的模型为煤炭的动态透性变化提供了更全面的理解.
- 有效应力被确定为影响煤炭透性的最关键因素,需要将其准确纳入预测模型.
- 这些发现提供了理论支持,通过考虑复杂的透性行为来优化煤床甲提取策略.
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