钻孔轨迹变化受岩层特征等因素影响的研究

Analysis on Trace Change of Drill Affected by Stratum Characteristic

基于煤矿井下没有钻进定向功能,钻机施工的钻孔经常出现轨迹飘钻、拖钻或钻孔水平偏移等难以控制的情况,从施工所用仪器、工作原理、钻孔轨迹分析方法分析钻孔轨迹变化与岩层特性的关系,同时探讨了钻孔偏移规律及偏移量。分析认为,利用钻孔轨迹变化规律可以高效利用钻孔数据,减少钻孔施工数量。

Based on the coal mine drilling directional function, for the drilling rig construction trajectory floating drilling, drilling or drilling horizontal displacement is difficult to control the situation, such as the construction of the instrument, the working principle, borehole trajectory analysis method the analysis of characteristics of borehole trajectory of change and the strata relations, at the same time, this paper expounds the borehole deviation and offset. Analysis shows that the use of borehole trajectory change law can efficient use of drilling data, reduce the amount of drilling construction.