孙家庄铁矿初级定向钻进及防斜措施

介绍了山西省原平市孙家庄铁矿矿区的地层概况和矿体特征,收集汇总了该矿区的前期钻孔数据资料和存在的孔斜问题,对该矿区的钻孔孔斜情况及原因进行了分析,总结了该矿区的钻孔孔斜变化规律及特点,对钻探施工中的钻孔结构、钻具级配、套管选用、初级定向钻进方法及防斜措施进行了详细的介绍,并用钻探施工效果证明了采用的初级定向钻进方法和采取的防斜措施是可行和合理的。

Primary Directional Drilling in Sunjiazhuang Iron Mine and Deviation Prevention Measure

With the collection of the prophase data and the hole deviation problem, the paper introduced the formation situation and orebody features of Sunjiazhuang mining area in Shanxi. Analysis was made on the hole deviation and the causes with the summary on change of borehole deviation and the features in this mining area. The borehole structure, drilling tool grading, case selection, primary directional drilling and deviation prevention measures were described. The drilling construction effect showed that the primary directional drilling and deviation prevention measure were feasible and reasonable.