摘要
在研究钻进规程参数对钻头温升的影响过程中 ,以能量守恒定律为基础 ,建立了钻头与岩石系统的能量守恒数学模型。研究表明 :在一定范围内 ,钻头的温升与钻压与转速的乘积呈线性关系 ,钻压与转速对钻头温升的影响是等效的 ;通过谐振子模型研究摩擦热能的产生和分配 ,得出以下结论 :摩擦热能在钻头与岩石之间的分配 ,与其各自弹性模量 (硬度 )有关 ,热能的分配与其弹性模量成反比 ,即Q1∶Q2 =E2 ∶E1。
Through establishing a mathematics model between impregnated diamond bit and rocks, which is based on the regularity of conservation of energy, we analyzed the regular variation between the drilling regime parameters and temperature of the diamond bit, and also deduced an equation between them. It shows that:within a certain limit, the temperature rising variation of the diamond bit is in linear with the variation of the product of drilling pressure and rotational speed, and the result of temperature rising caused by drilling pressure is as the same as it caused by rotational speed. With the mathematics model of simple harmonic oscillator, we also studied the friction energy and its distribution between diamond bit and rocks.The distribution of friction energy between diamond bit and rocks is related with their elastic modulus(hardness), and the distributive law is as follows:Q 1∶Q 2=E 2∶E 1.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
2004年第4期57-59,共3页
Coal Geology & Exploration
关键词
钻头温度
钻进规程参数
摩擦热能
弹性模量
temperature of diamond bit
drilling regime parameters
Elastic modulus
friction energy
