矿产勘察施工中涉及的地层一般都较为复杂,不仅岩层变化复杂而且岩层角度和走向变化都较大,因此勘察钻进过程中经常发生钻孔偏斜情况,导致钻孔的命中率低下,矿产勘察效率降低,勘察结果不准确等问题,钻孔纠偏的方法和工艺相当的多,本篇将结合实际工程来介绍先进的卡和式偏心契在矿产勘察钻探中的纠偏中的应用,此外还可以通过卡和式偏心契开设支孔从而节约了矿产勘察的费用。 Stratums involved in mineral prospecting and construction are generally complex. Not only the rock layers vary in complexity, but also the angle and direction of the rock layers are greatly changed. Therefore, the borehole deflection often occurs during the survey drilling, resulting in a low hit rate of the borehole. Efficiency reduction, the survey results are not accurate and other issues, drilling correction method and process quite a lot, this article will be combined with the actual project to introduce advanced card and eccentric defts in mineral prospecting drilling correction in the application, in addition to Through the card and eccentric dents opened branch hole thus saving the cost of mineral exploration.