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金刚石钻进作为一种先进的钻探方法,经过不断的完善,至今已沿用了百余年.1930年以前,金刚石钻头是用稀缺的粗粒黑金刚石(CARBONADO)靠手工镶嵌的,价格昂贵.1930年初出现了粉末冶金技术,才开始采用较便宜的小颗粒金刚石以机械方法成批生产金刚石钻头.由于金刚石钻头在许多方面优于钻粒钻头和硬质合金钻头,有较高的钻进速度,即使在很坚硬的岩石中钻进也可取得较高的岩心采取率,而且可钻进任何方向的钻孔,偏斜又较小,因而使金刚石钻进法得到了广泛应用.五十年代,一些发
As an advanced method of drilling, diamond drilling has been in use for more than a century now until 1930. Diamond bits were manually inlaid with scarce, coarse-grained black diamonds (CARBONADO) and were expensive. The advent of powder metallurgy at the beginning of the year began with the use of less expensive small-grain diamonds to batch-produce diamond drill bits in a mechanical way.Because diamond drill bits outperform drill bit and carbide drill bits in many ways with a high rate of penetration, Diamond drilling method is widely used even when drilling in very hard rocks, and can get higher core recovery rate, and can drill into any direction, the deflection is smaller.Fifties, Some hair