摘要
PDC钻头切削齿的切削载荷与齿的切削工作角度有直接而密切的关系,所以正确地分析和计算齿的切削角度,是齿的切削载荷以及钻头工作载荷分析的基础和前提。对横振钻井模式下PDC钻头切削齿的切削工作角度作了严格的定义,利用空间解析几何以及向量分析的数学理论和方法,推导出齿刃轮廓线上任意点的前倾角和刃倾角的计算公式,分析和探讨了钻头的横向运动速度对PDC齿切削工作角度的影响规律。
Since the cutting force of PDC cutter is related directly and closely to its cutting angle,correct calculation and analysis on its cutting angle is the basis and premise for analyzing cutting force and bit operating load.So,a cutting angle of PDC cutter under drilling with lateral movement is given a strict definition,the calculating formula of the inclination and cutting edge inclination at any point of blade contour is then deduced and the influencing rule of bit's lateral drilling rate on a cutting angle of PDC cutter is probed in-depth.This study provides basic references to calculate and analyze operating load of PDC cutter and PDC bit under drilling with lateral movement.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2008年第3期72-74,共3页
Natural Gas Industry
基金
国家自然科学基金项目(编号:90410004
50774066)
四川省高校重点实验室"岩石破碎学与钻头实验室"开放基金项目"PDC钻头结构与力学性能关系研究"的资助
关键词
钻井工程
PDC钻头
切削
前倾角
刃倾角
横向运动
drilling engineering,PDC bit,cutting,inclination,cutting edge inclination,lateral movement