利用声波速度预测地层岩石硬度的试验研究

声波速度测井是利用岩石的声学性质研究钻井地质剖面和工程质量等问题的一种测井方法。这一方法因有不受泥浆矿化度影响、适用条件较广的优点,所获取的资料真实可靠、数据量大且代表性强。在扼要叙述室内测定岩石声波速度、硬度试验方法的基础上,重点介绍了利用回归分析方法,研究声波速度与岩石硬度相关关系、地面声波速度与井下测井声波速度相关关系的数据分析处理过程,给出了获取的定性定量结论,介绍了以方便现场工程应用为目的所建立的利用测井声波速度预测地层岩石硬度的数学模型、预测剖面及其资料验证结果。结论部分阐述了对该项研究成果的应用前景。

AN EXPERIMENTAL STUDY ON THE PREDICTION OF FORMATION ROCK HARDNESS BY USING THE ACOUSTIC VELOCITY

On the basis of briefly describing the method for measuring acoustic velocities of rocks and rock hardness in the laboratory, this paper introduces the correlation between acoustic velocity and rock hardness as well as the correlation between the acoustic velocity on the surface and that from downhole logging by using regression analyis.Based on the comprehensive analysis and study,the paper describes the mathematical models established for field use to predict formation rock hardness by means of acoustic ...