大直径钻井周围的气体迁移与破裂软煤层中的保护屏管道
Zhongjiu Ren1,2,3, Haifeng Wang1
1School of Safety Engineering, China University of Mining and Technology, Xuzhou, Jiangsu Province 221116, China.
ACS omega
|July 31, 2023
概括
大直径钻井中的保护屏管道可以防止破裂软煤层的崩和堵塞. 这项技术通过支持煤炭和促进快速天然气提取,提高了气体排水效率.
科学领域:
- 采矿工程 采矿工程 采矿工程
- 地质技术工程 地质技术工程
- 石油工程是石油工程中的一个.
背景情况:
- 破裂的软煤层对大直径钻孔钻井构成挑战,包括堵塞,穿孔和洞塌陷.
- 保护屏管道通过支持损坏的煤炭,防止堵塞和改善透性来提供解决方案.
研究的目的:
- 建立一个数学模型,用于在破碎的软煤层内的大直径钻井中排气.
- 通过使用数值模拟来研究装有保护屏管道的大型钻井周围的气体迁移规律.
主要方法:
- 开发一种气体排水的数学模型.
- 使用COMSOL多物理软件进行数值模拟.
- 基于3205工作面的案例研究在山西西中兴煤矿.
主要成果:
- 钻孔和管道中的气体流速在0到0.25米/秒之间.
- 与保护屏管和屏孔相比,钻孔中的气体速度较低.
- 保护屏管有效地支持煤炭,防止钻孔堵塞,并增强气体提取.
结论:
- 保护屏管道对于在破裂的软煤层中稳定大直径钻孔至关重要.
- 屏幕管道设计有助于有效地提取自由气体,改善整体气体排水性能.
- 这项技术为煤矿的现场应用提供了宝贵的指导.
更多相关视频
10:27A Uniaxial Compression Experiment with CO2-Bearing Coal Using a Visualized and Constant-Volume Gas-Solid Coupling Test System
Published on: June 12, 2019
8.7K
12:18Pore-scale Imaging and Characterization of Hydrocarbon Reservoir Rock Wettability at Subsurface Conditions Using X-ray Microtomography
Published on: October 21, 2018
14.0K
相关概念视频
01:21Multiple Pipe Systems
794
Multipipe systems consist of complex configurations of interconnected pipes designed to transport fluids efficiently across intricate networks. They are essential in engineering applications requiring precise control over flow distribution, pressure, and head loss. They are categorized into series, parallel, loop, and network configurations, each distinguished by unique flow characteristics and applications.
Series Configuration
In a series configuration, fluid flows sequentially from one pipe...
Series Configuration
In a series configuration, fluid flows sequentially from one pipe...
794
01:24Single Pipe Systems
168
In pipe flow analysis, problems are typically categorized into three types — Type I, Type II, and Type III — based on the known parameters and the desired outcome. Each type of problem addresses specific engineering requirements using fluid properties, pipe characteristics, and operational conditions.
In a Type I problem, fluid properties (density and viscosity), pipe characteristics (including diameter, length, and surface roughness), and the flow rate or average velocity are...
In a Type I problem, fluid properties (density and viscosity), pipe characteristics (including diameter, length, and surface roughness), and the flow rate or average velocity are...
168