钻头转速对可持续钻井影响的研究

Niyazi Bilim, S. Dündar, B. Kekeç, Arif Emre Dursun
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引用次数: 2

摘要

岩石可钻性的估计对采矿和钻孔作业至关重要。为此,许多研究人员开发了各种模型和方程来估计岩石的可钻性。这些模型大多是利用岩石的物理力学性质来确定岩石的可钻性和钻速。虽然可钻性主要取决于岩石性质,但其他参数也会对可钻性产生影响。其中一个参数是钻头的旋转速度。研究了钻头转速对钻井性能的影响。在实验室使用旋转岩心钻孔和金刚石钻孔机进行了钻孔试验。研究了15种不同岩石类型的岩石物理性质与钻速之间的关系,并采用了4种不同的转速来确定钻头转速对钻进的影响。单轴抗压强度、密度和纵波速度与侵彻速度有较强的相关性。此外,当岩石的物理力学性质数值增大时,转速对钻速的影响减小,即增加钻头转速对坚硬固体地层的可钻性影响较小。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Investigation of the Effect of Drill Bit Rotation Speed on Sustainable Drilling
Estimation of rock drillability is vital for mining and boring operations. For this purpose, many researchers have developed various models and equations to estimate rock drillability. Most of these models aim to determine the drillability of rock and the penetration rate by using the physical and mechanical properties of rocks. Although drillability primarily depends on rock properties, other parameters have an impact on drillability as well. One of these parameters is the rotation speed of the bit. This study investigates the effect of rotation speed of the bit on drilling performance. Drilling tests were performed in the laboratory using rotary core drilling and a diamond drilling machine. The relationships between the physical rock properties and the penetration rate were investigated on 15 different rock types and four different rotation speeds were applied to determine the effect of rotation speed of bit on drilling. The uniaxial compressive strength, density, and P wave velocity show strong correlations with the penetration rate. In addition, if the values of the physical and mechanical properties of the rock increase, the effect of the rotation speed on the penetration rate decreases, i.e., increasing the rotation speed of the bit slightly affects drillability on hard and solid formations.
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