陕县申家窑矿区斜孔钻进及主要防斜措施

Slant hole drilling and deviation control measures in the Shenjiayao mining area of Shan county

摘要:

河南省陕县申家窑-葫芦峪金矿区为国家森林保护区，在该区域内钻探施工，必须避开复杂地带及绿化区，进行绿色勘探、减少森林环境破坏，为此设计钻孔多为斜孔，但由于矿区地层遇层角大且含有大量软弱夹层，钻孔弯曲度不易控制，致使前期施工钻孔弯曲度超差而报废。本文以ZKS004钻孔为例，详细介绍了该矿区钻孔施工工艺、钻孔弯曲度的控制与预防及纠斜措施。

Abstract:

The Shenjiayao-Huluyu gold mining area in Shan county， Henan province， is a national forest reserve. For drilling in this area， it is necessary to avoid complex zones and green areas， and green exploration must be carried out to reduce damage to the forest environment； thus， most holes are designed at slant holes. however， due to the large angle of stratum penetration and a large number of weak interlayers， the borehole curvature is not easy to control， resulting in abandonment of the early drilled boreholes because of over-standard curvature. Taking ZKS004 borehole as an example， this paper introduces in detail the borehole drilling technology， the control and prevention of borehole curvature and the measures of deviation correction.