冷却/润滑流体、加工参数和岩石力学特性对岩石钻进速度的影响研究

IF 1.1 Q3 MINING & MINERAL PROCESSING
R. Mikaeil, Shahrokh Khosravimanesh, M. C. Seifabad, R. Bagherpour
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引用次数: 0

摘要

在大多数岩石钻探操作中,低钻速(ROP)主要可归因于钻探过程中产生的岩屑的存在以及钻头-岩石界面摩擦引起的热应力,而随着钻探岩石强度、硬度和耐磨性的增加,热应力会加剧。为了提高ROP、钻头寿命和切削功率,有必要最大限度地减少由于机械钻头-岩石相互作用和钻孔中产生的热应力而产生的过程力。从技术和经济角度来看,这些领域的任何改进都是极其重要的。这种改进可以通过在钻井过程中使用适当的冷却/润滑液来实现,以提高机械钻速,降低钻井环境的温度,并形成一个没有岩屑的干净钻孔。在这项工作中,进行了一系列实验室钻井试验,以研究和比较在六种不同冷却润滑液存在的情况下,在七个硬岩和软岩样品的钻井中的机械钻速。用实验室规模的钻机在几个不同的转速和推力下对立方体试样进行钻孔试验。进行统计分析是为了研究机械钻速与岩石力学性能、流体性能和钻机加工参数之间的关系。这些分析表明,在类似的岩石力学性能条件下,使用浓度为1:100的Syncool和浓度为1:120的肥皂水代替纯水,花岗岩的ROP平均增加31%和37%,大理石的ROP增加36%和43%,钙华的ROP分别增加47%和61%。这些结果证明了这些冷却/润滑液在提高ROP方面的良好性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Study of Effect of Cooling/Lubricating Fluids, Machining Parameters, and Rock Mechanical Properties on Penetration Rate in Rock Drilling Process
In most rock drilling operations, the low rate of penetration (ROP) can be primarily attributed to the presence of the cuttings produced during drilling and the thermal stresses caused by friction at the bit-rock interface, which can be exacerbated with the increasing strength, hardness, and abrasivity of the drilled rock. In order to improve ROP, drill bit lifetime, and cutting power, it is necessary to minimize the process forces due to the mechanical bit-rock interaction and the thermal stresses generated in the drill hole. Any improvement in these areas is extremely important from both the technical and the economic perspectives. This improvement can be achieved by the use of appropriate cooling/lubricating fluids in the drilling process in order to increase ROP, reduce the temperature of the drilling environment, and create a clean drill hole free of cuttings. In this work, a series of laboratory drilling tests are performed to investigate and compare ROP in the drilling of seven samples of hard and soft rock in the presence of six different cooling-lubricating fluids. The drilling tests are performed on the cubic specimens with a laboratory-scale drilling rig at several different rotation speeds and thrust forces. The statistical analyses are performed in order to investigate the relationship between ROP and the mechanical properties of the rock, properties of the fluid, and machining parameters of the drilling rig. These analyses show that under similar conditions in terms of mechanical properties of the rock using Syncool with a concentration of 1:100 and soap water with a concentration of 1:120 instead of pure water leads to the average 31% and 37% increased ROP in granite, 36% and 43% increased ROP in marble, and 47% and 61% increased ROP in travertine, respectively. These results demonstrate the good performance of these cooling/lubricating fluids in increasing ROP.
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来源期刊
Journal of Mining and Environment
Journal of Mining and Environment MINING & MINERAL PROCESSING-
CiteScore
1.90
自引率
25.00%
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