仿生孕镶金刚石钻头高效碎岩机理  

Efficient Rock Fragmentation Mechanism Analysis of Impregnated Diamond Bionics Bit

作　　者：徐良[1] 孙友宏[1] 高科[2] 

机构地区：[1]吉林大学建设工程学院,长春130026 [2]中原石油勘探局钻井研究院,河南濮阳457001

出　　处：《吉林大学学报（地球科学版）》2008年第6期1015-1019,共5页Journal of Jilin University：Earth Science Edition

基　　金：国家“863”项目(2006AA06Z221)

摘　　要：将仿生学的非光滑原理应用到孕镶金刚石钻头的设计中，研制出新型的仿生孕镶金刚石钻头，比普通金刚石钻头钻进时效提高了30％～80％。仿生钻头破碎岩石后岩粉的颗粒比普通钻头破碎的岩粉颗粒大，可节省能量消耗，提高破碎效率；仿生非光滑表面使得钻头唇面的比压增加，有利于钻头的锐化，从而提高了时效；另外非光滑表面改善了钻头和岩石的冷却条件，因此提高了金刚石钻头的钻进效率。A new type of impregnated diamond bionics bit is developed by applying the bionics nonsmooth theory to the bit design. Its drilling efficiency increases 30 % to 80% compared with the ordinary bits. The size of rock dust particles crushed by bionics bits is larger than that broken by ordinary bits. The bionic non-smooth surface increases the specific pressure of the bit＇s crown and also ameliorates the cooling conditions between the bit and rock. So it improves the drilling efficiency of diamond bits.

关 键 词：金刚石钻头 仿生 孕镶 碎岩机理 非光滑 

分 类 号：P634.5[天文地球—地质矿产勘探]