影响钻速的基本因素:钻头选择、钻压、钻头钻速、钻头转速、钻头液力学、循环液性能、地层性质。每一因素还可细分。于是几百个不加夸张的因素相互影响,便产生最佳钻头设计。钻压、转速和液力学是三个重要变量.钻压与转速的组合表示钻头一地层界面上产生岩屑的有效机械能;液力学表示岩屑位移到地面的有效液能。可以推 The basic factors affecting the penetration rate: bit selection, bit weight, bit drilling speed, bit speed, bit fluid dynamics, circulating fluid properties, formation properties. Each factor can be subdivided. So hundreds of exaggerated factors interact with each other to produce the best bit design. The weight-on-bit, speed and hydromechanics are three important variables.The combination of weight-on-bit and speed represents the effective mechanical energy of cuttings produced at the drill-formation interface, and hydraulics represents the effective liquid energy from cuttings to ground. Can push