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本文在声波水泥胶结质量测井中根据声等效衰减系数的概念和一种采用双发双收原理进行声幅补偿来判断套管井水泥胶结质量的方法。作者根据这种概念和方法建立了实验装置,进行了室内试验和声波幅度的数据测量。这种装置大大减小井下仪器在油井中的倾斜偏心,声波换能器的发射,接收灵敏度和井壁透射系数等因素对接收的声波幅度的影响,和目前国产的水泥胶结质量声波测井仪器相比较,提高了声波幅度的测量准确性,从而也就提高了水泥胶结质量声波测井的可靠性。
In this paper, the acoustic cement cementation quality logging based on the concept of acoustic equivalent attenuation coefficient and a double-double principle of sound amplitude compensation to determine the caking cement cementation quality. Based on this concept and method, the author established an experimental device and conducted indoor experiments and data measurement of acoustic amplitude. This device greatly reduces the inclination of the downhole instrument in the oil well, the influence of the emission of the acoustic wave transducer, the receiving sensitivity and the transmission coefficient of the borehole wall on the received sound wave amplitude, and the current domestic cement cementation quality acoustic logging instrument In comparison, the measurement accuracy of the amplitude of the acoustic wave is improved, thereby improving the reliability of the acoustic cementing of the cement bonding quality.