在钢粒钻进中,我们往往遇到这样的情况,即:在岩石硬度和钢粒规格相同的条件下,会出现不同的效果.这多半是由于对钢粒钻进原理的理解不同,以及由此而采取的操作方法不同所导致的.通过几年来我们在钢粒钻进方面的经验和教训,取得如下认识和体会.一、井底应保持适当数量的工作钢粒井底钢粒如果多了,就会分散其克取能力,起不到应有的作用;少了,虽能充分发挥钢粒本身的克取效能,但又缩小了克取面积.怎样才算“适量”呢?我们认为:1.一般井底应保持20～30公斤钢粒的余量为宜.实际上在井底不超过300毫米钻粉 In the drilling of steel pellets, we often encounter the situation that different effects occur when the rock hardness and the pellet size are the same, mostly due to the different understanding of the pellet drilling principle and Which led to the different methods of operation by the past few years we drill in the steel experience and lessons learned to obtain the following understanding and experience.A bottom hole should maintain the appropriate number of steel particles bottom of the steel If More, it will disperse its ability to take grams, can not play its due role; less, although it can give full play to the performance of the grain itself, but also reduced the area taken away. ? We think: 1. The general bottom of the well should maintain the balance of 20 to 30 kg of steel particles is appropriate in fact not exceeding 300 mm at the bottom of the diamond powder