不断改革和采用正确的钻进方法,是岩心钻探技术改革的主要课题。因为采用正确合理的钻进方法,能克服坚硬岩石,复杂地层等诸多钻进困难。然而,在地层条件比较好时,若钻进方法不当,将经常处于多事之中。有如用φ75毫米以小的钢粒钻进,其结果必然是质量差、事故多、进度慢。通过多年来钻探工作的共同实践,证明金刚石小口径钻进,是当前岩芯钻探钻进方法改革的必须。但是,从现状和存在的一些问题出发,在实行这项改革中,还有如下一些问题,值得重视和探讨。 The continuous reform and adoption of the correct drilling method are the major topics in the core drilling technology reform. Because of the correct and reasonable drilling method, can overcome hard rock, complex formation and many other drilling difficulties. However, when the formation conditions are good, improper drilling methods will often be troubling. As with φ75 mm small steel drilling, the result is inevitably poor quality, accidents, slow progress. Through many years of drilling practice, it has been proved that drilling small diameter diamonds is necessary for the current reform of drilling and core drilling. However, starting from the status quo and some existing problems, there are some problems to be solved in implementing this reform, which deserve our attention and discussion.