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从均匀各向同性完全弹性介质中泊松比与纵横波的关系出发，根据Ｄ地区全波列测井资料建立了该区泊松比随深度变化的关系：浅层泊松比随深度增加而增加，到达一定深度，泊松比随深度增加而逐渐减小，然后达到－稳定值。在此基础上进一步对该区含不同流体砂岩的沮松比特征及其随深度变化规律进行探讨．在浅层，含气、含油、含水砂岩的泊松比差别较大，其中含气砂岩泊松比最小，含水砂岩泊松比最大；在深层，三者之间的差别较小。
Based on the relationship between Poisson’s ratio and P- and S-wave in homogeneous isotropic elastic media, the Poisson’s ratio of the region is established with the depth according to the data of full-wave series in D region. The shallow Poisson’s ratio increases with depth , Reaching a certain depth, Poisson’s ratio decreases with increasing depth, and then reaches - steady value. On the basis of this, further study is carried out on the characteristics of the collapse ratio and the variation with depth of different fluid sandstones in this area. The Poisson’s ratio in gas-bearing, oil-bearing and water-bearing sandstones is quite different in the shallow layers, of which gas-bearing sandstone has the smallest Poisson’s ratio and the water-bearing sandstone has the largest Poisson’s ratio.