高低锯齿金刚石钻头研制与试验

• 作 者: 李大佛 刘志祥
• 出 处: 探矿工程
• 发表日期: 1983年06期
• 关键词: 金刚石钻头 钻头寿命 钻进效率 石英含量 锯齿状 研磨性 压入 石英砂岩 人造金刚石 压力增加

一、钻头研制当前,在坚硬、致密、弱研磨性的地层(即所谓“打滑”地层)钻进,普遍感到钻进效率低,钻头寿命短,钻探成本高。客观原因是这种地层强度大,硬度高,石英含量多(70%左右,甚至高达90%以上),矿物粒径小。这种物理力学性质的岩石决定了常规钻头上的金刚石很难压入(因硬度高),且与其对磨(或钻

First, bit development At present, drilling in hard, dense and weakly abrasive strata (the so-called “slippery” formation) generally results in low drilling efficiency, short bit life and high drilling costs. The objective reason is that this formation strength, high hardness, quartz content (about 70%, or even up to 90%), mineral particle size is small. This kind of physico-mechanical rock determines that diamond on conventional drill bits is difficult to press in (due to hardness)