基于REV透性模型的表面井的井型选择和布局优化的时空空间关系
Wei Wang1, Xufei Lu1, Xiangjun Chen2
1School of Civil Engineering and Architecture, Henan University, Kaifeng 475004, China.
ACS omega
|December 11, 2023
概括
这项研究开发了新的煤炭透性模型,以优化煤床甲排水. 这些发现指导了地表井的战略位置,以提高天然气提取效率.
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.
- 岩石机械学 岩石机械学
背景情况:
- 煤床甲 (CBM) 勘探在水盆地等地区至关重要.
- 有效的地表井放置对于成功的CBM排水至关重要.
- 了解排水过程中的透性演变是优化提取的关键.
研究的目的:
- 开发基于压力关系的新型煤炭透性模型.
- 分析排水过程中煤炭透性的时空演变.
- 建立一个方法来实现最佳的地表井选择和布置.
主要方法:
- 使用代表性的基本体积 (REV) 开发透性模型.
- 对透性演变机制和时空模式的分析.
- 井位置与工作面上预排水时间的相关性.
主要成果:
- 在REV体积应变和骨折体积应变之间发现了线性相关性.
- 相对应系数直接与初始断裂孔隙性有关.
- 煤矿井附近的煤炭透率变化反映了吸附应变的趋势.
- 根据预排水时间确定了最佳的表面井配置 (垂直和水平).
结论:
- 开发的模型准确地描述了排水过程中煤炭透性的演变.
- 基于这些模型的地表井放置策略可以提高CBM排水效率.
- 这项研究为CBM勘探和开发提供了实际指导.
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