摘要
通过分析发现顺层抽放钻孔在垂直方向的偏斜受多种因素的影响,虽然钻杆自身弯曲变形导致钻孔向下偏移,但钻头前方煤体力学模型以及钻孔内残留钻屑将导致钻孔轨迹向上偏移,综合表现为钻孔在垂直方向上偏移,在煤矿井下的现场实验和考察也验证了这一分析结果。
The vertical direction of borehole deviation is influenced by many factors. Although the bending deformation of the drill pipe is caused by the deviation of drilling hole, the mechanical model of the drill hole and residual drilling cuttings will lead to the deviation of the drilling trajectory. In the field of the coal mine, the analysis results are verified.
出处
《煤炭技术》
CAS
北大核心
2016年第2期188-189,共2页
Coal Technology
关键词
顺层钻孔
垂向偏移
抽放
bedding drilling
vertical migration
pumping
