The paper introduces in details the application of the examination of thin layer thickness with high-value Vp in low background and low-value VP in high-value background.

• 研究了声波测井薄层厚度定量计算公式，详细介绍了公式在高背景上检出Vp低值薄层，在低背景上检出Vp高值薄层的应用情况。