摘要
声波水泥胶结测井实质上就是通过测量石油套管井的水泥胶结面的有关声学参数来判断水泥胶结质量。本文就声波水泥胶结测井原理,接收的首波幅度和套管中的传播时间与套管井水泥胶结质量之间的定量关系,等效声衰减系数的概念和双发双收声幅补偿原理等方面的问题分别进行了分析、推导和讨论,并进行了实验验证。
Cement Bond Log virtually measures acoustic parameters related to cement-casing interface to determine the quality of cementation. Quantitative relationship between the quality of cementation and the amplitude of the first arrival and sonic transit time in casing is derived. The concept of quasi-compressional ware and the integration of inherent sonic attenuation and sonic scattering factor are discussed in this paper. The compensation principle of two transmitters-two receivers sonic amplitude log is also given.
