摘要
针对三翼钻头在硬粘土地层的钻进所遇到的问题提出了改进措施 ,对去掉护圈、改变副吸渣口形状 ,调整前角角度、切削齿的排列等问题进行了探讨 ,基本解决了三翼钻头易糊钻、钻速缓慢的两大难题。
This paper proposes improving measures according to the problems in the procedure of drilling the blue bind formation using the three-winged drag bit. It also discusses the problems such as striping away the protector, changing the shape of the vice flushing hole, altering the degree of the hook angle and the arrangement of the cutting prongs. The paper solves the two problems of gummed in and low drilling speed.
出处
《地质与勘探》
CAS
CSCD
北大核心
2000年第2期43-44,62,共3页
Geology and Exploration
关键词
三翼钻头
结构改进
切削齿
粘土地层
钻头
three-winged drag bit, vice flushing hole, hook angle, cutting prongs
