实钻条件下岩石抗钻能力的破碎能耗评价

he process of crushing rock is a process of energy consumption. The energy consumption on the crushing rock is an important index which shows anti-crushing capacity of the rock and also is an important part of the study on the drilling rock crushing mechanism. In this paper, using the fractal geometry to analyze the rock crushing products particle size volume distribution, the energy sources and energy dissipation are analyzed in the actual drilling process, established the theoretical analysis model for the actual drilling process of rock crushing energy consumption and the affecting factors on energy consumption on the crushing rock were analyzed. The model structure shows that the energy consumption on the rock crushing was not only related to the size of the input energy, but also to the size of rock cuttings and the fractal dimension of size distribution. With the application of energy consumption on the crushing rock model, established daqing xujiaweizi volcanic rocks well xushen 31 and well xushen 43 of the rock crushing energy consumption with depth profile, and analyzed the size of the rock crushing energy consumption under different drilling conditions. The results show that the factors that affect the drilling penetration rate is not only to increase with the depth of rock mechanical properties, bottom hole pressure of environment is also a significant change in penetration rate factors.