在高压和高温条件下,炭煤的宏观类型控制的透性变化
Xianyu Lu1, Yong Li1,2, Siying Hao3
1College of Geoscience and Surveying Engineering, China University of Mining and Technology-Beijing, Beijing 100083, P. R. China.
ACS omega
|November 3, 2025
概括
深层煤矿库的透性受到压力和温度的影响,因煤炭类型而有很大差异. 明亮和半明亮的煤炭对这些变化的敏感性比半沉和沉的煤炭更高.
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:
- 深层煤库的透性对于煤床中甲的提取至关重要.
- 了解温度和压力对煤炭透性的影响对于水库管理至关重要.
- 不同煤炭宏型对环境条件的不同反应仍然不清楚.
研究的目的:
- 在不同的高温和高压条件下研究不同煤炭宏观型的透性.
- 为了确定煤炭透性对有效应力和温度的敏感性.
- 为了确定影响深层煤炭透性变化的因素.
主要方法:
- 在60-90°C的温度和5-35 MPa的限制压力下,实验测量了四种煤炭宏观类型 (明亮,半明亮,半暗淡,暗淡) 的透性.
- 使用Pearson的相关性对透性数据的分析,以评估对有效应力和温度的敏感性.
- 透性-应力和透性-温度关系的表征.
主要成果:
- 所有的煤类型都表现出透性和有效应力之间的负力定律关系.
- 明亮和半明亮的煤炭表现出较高的透性损伤比率和应力敏感性,而不是半沉和沉的煤炭.
- 明亮和半明亮煤的透性随着温度的增加而下降,而半沉沉和沉沉的煤则显示出最小的变化;有效应力比温度更有影响.
结论:
- 煤炭宏观型组合显著影响深层水库中对压力和温度的透性反应.
- 有效应力是影响深层煤炭透性的主要因素,温度起到次要作用,特别是在高应力条件下.
- 研究结果为优化深层煤床甲勘探和开发策略提供了理论见解,基于煤炭类型.
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