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乔文孝等:超声脉冲反射法评价第Ⅱ界面的模拟实验,测井技术,1996(3)20,192~196。针对超声脉冲反射法能否对第Ⅱ界面进行胶结评价的问题,在实验室内进行了模拟实验和理论计算。实验结果表明,无论在时域还是在频域,与第Ⅱ界面所对应的特征信息均不明显。对于模拟各种胶结状况的情形,反射系数的理论计算与实验测量结果均有很好的一致性。本文认为,在实际工作中仅靠超声脉冲反射法难以评价第Ⅱ界面的水泥胶结质量。
Qiao Wenxiao et al .: Simulation of Interface Ⅱ by Ultrasonic Pulse Reflection Method, Logging Technology, 1996 (3) 20,192 ~ 196. Aiming at the question whether the ultrasonic pulse reflection method can evaluate the interface of the second interface, the simulation experiment and theoretical calculation are carried out in the laboratory. The experimental results show that the feature information corresponding to the interface II is not obvious either in the time domain or in the frequency domain. For the simulation of various cementation conditions, the theoretical calculation of the reflection coefficient is in good agreement with the experimental measurements. This paper argues that it is difficult to evaluate the cement bonding quality of interface II only by the ultrasonic pulse reflection method in practice.