正交偶极阵列声波测井技术及应用

正交偶极阵列声波测井通过完善单极、偶极双激发方式，达到了信号强、衰减小的目标，通过偶极发射器的同深度排列提高了测井数据在各向异性分析方面的应用效果。介绍了在软、硬地层中为产生较强剪切波声信号在激发频率方面的差异，根据地层的物理特性选择最佳的偶极发射频率，可以得到最好的挠曲波激励和传播。详细描述了正交偶极阵列声波测井技术的特点；介绍了该技术资料采集的方式及针对不同特性地层的参数选择原则。介绍了正交偶极阵列声波测井技术所取得的处理解释结果及其在地层各向异性分析等地质方面的应用。

Application of crossed dipole array acoustic logging

Crossed dipole array acoustic logging achieves the goals of increasing signals and reducing attenuations by properly arranging the sequence for exciting monopoles and dipoles. The array of di poles in the same depth ensures the application results of logging data in anisotropy analysis. This paper investigated the difference of exciting frequency for soft and hard strata to generate strong flexural waves by selecting the optimal exciting frequency of dipole in accordance with the physical properties of the strata, introduced the characteristics of crossed dipole array acoustic logging, and discussed the selection of layout and parameters for different strata when crossed dipole array acoustic logging is implemented. The processing and interpretation of crossed dipole array acoustic logging data and its applications in anisotropy were also described.