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以声学原理为基础,首先建立了水泥胶结测井模型,然后对套管波中的套管滑行波、一次反射波和多次反射波的能量方程进行了推导,进而对声波测井过程中声波的反射系数、折射系数、吸收衰减系数以及散射衰减系数进行了计算,最终计算出声波接收装置接收到的声波能量大小,并且得出了水泥胶结测井过程中各环节声波衰减量,以此判断各个环节声波衰减对水泥胶结测井的影响,所得结论对水泥胶结测井中声波能量的计算具有重要的指导意义。
Based on acoustic principle, cement cementing logging model was established firstly, and then the energy equations of casing slip wave, primary reflected wave and multiple reflected wave in casing wave were deduced. Then the acoustic wave The reflection coefficient, the refraction coefficient, the absorption attenuation coefficient and the scattering attenuation coefficient are calculated, and finally the acoustic energy received by the acoustic wave receiving device is calculated, and the acoustic attenuation of each part of the cement cementing logging process is obtained, so as to determine The influence of acoustic attenuation in various stages on the cementing logging has the important guiding significance for the calculation of the acoustic energy in the cement cementing logging.