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一、概况 岩石可钻性是岩石被钻穿的难易程度,表现了岩石在钻井过程中的一种综合性质,由于这种性质是用与实际钻井原理相似的微型钻头试验得出来的,对实际工作具有相当的参考价值。根据岩石可钻性对所钻地层进行分级分类工作,便可作为实际工作中选用钻头类型,制定技术定额等提供地质依据。国外有的厂家已将微钻速直接用于初选钻头,予测钻头工作指标与估计成本等方面。根据我国各油田岩心试验结果的统计分析,发现岩石可钻性服从
I. Overview Rock drillability is the difficulty of rock drilling, showing the rock in the drilling process of a comprehensive nature, because this property is based on the actual drilling principle similar to the micro-drill test derived from Practical work has a considerable reference value. According to the rock drillability of the stratum stratification classification work, can be used as the actual work type of drill bit, technical quota to provide geological basis. Some foreign manufacturers have been directly applied to the primary drill bit drill bit, drill bits to predict the work of indicators and estimated costs and so on. According to the statistical analysis of the core test results of various oil fields in China, it is found that the rock drillability obeys