人工造斜技术在煤田钻探中的应用

Application of artificial slanting technique in coal field drilling

煤田地质钻探中,常发生孔内事故产生遗留物不能测井终孔和打薄、打丢煤层现象,严重影响了对煤炭资源的评价。通过采用下入偏心楔造斜钻进、补心技术,获得了较好的地质技术和经济成果。

During the process of coal field geological drilling,accidents in boreholes often occur and remnants are produced,which results in the failure to log the final hole,thinning and losing coal seams,and this seriously affects the evaluation of coal resources.Better geological technology and economic results have been achieved by using downward eccentric wedge slant drilling and core-filling technology.