青海东昆仑重点成矿带岩石钻进特性及金刚石钻头使用效果分析  

Characteristics of Rock Drilling and the Effect of Diamond Bits Used in the Key Metallogenic Belt in East Kunlun,Qinghai

作　　者：高元宏 梁俭 刘鹏 潘秉锁[3] 刘海声 应春业 

机构地区：[1]青海省第二地质矿产勘查院,西宁810028 [2]青海省岩心钻探工程技术研究中心,西宁810028 [3]中国地质大学(武汉),武汉430074

出　　处：《地质科技情报》2017年第5期228-231,共4页Geological Science and Technology Information

基　　金：青海省科技厅基金项目"青海省东昆仑成矿带强研磨性地层钻进技术研究"(2015-SF-210)

摘　　要：为了解决青海东昆仑重点成矿带金刚石钻进中钻头使用寿命较短的问题,对该区域典型岩石的研磨性、可钻性进行了测试分析,并对影响钻头寿命的因素进行了现场调研。测试结果表明:岩石的研磨性主要在5~6级,可钻性为7~8级。回归统计分析表明,影响钻头寿命的显著因素是钻孔深度和钻头回转速度:钻孔越深,转速越高,钻头寿命越短;认为这是由于地层漏失,导致环空粗颗粒岩屑不断累积,造成钻头重复破碎岩屑、拉槽和微烧,从而降低了钻头的寿命。In order to solve the problem of short service life of diamond drilling bit in Qinghai East Kunlun key metallogenic belt , this study analyzes the typical area of rock drillability and the bit abrasiveness and the factors that influence the life of the drill conducted on-site investigation. The test results show that the grinding property of the rock is mainly in class 5--6 , the drillability grade, 7--8. The regression analysis indicates that the significant factors that affect the life of the drill bit are the depth of drilling hole and the rotary speed of the bit. The analysis suggests that the formation of the leakage should lead to the accumulation of coarse particles in the annulus, which results in the repeated fragmentation of cuttings, the pull and the micro combustion, thus reducing the life of the bit.

关 键 词：金刚石钻进 钻头寿命 研磨性 钻进规程 

分 类 号：P634[天文地球—地质矿产勘探]