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北海页岩速度的各向异性及深度异常 (Velocity Anisotropy of shales andDepth Anomalies in the North sea)Niranjan C.Banik,Gulf Research ＆Development Co (S20.1) 在北海用地震和测井所得深度之间的矛盾被用来研究地下速度的各向异性。由挪威和联合王国之间21口井的测量数据得到的页岩层系(厚度与深度)与所得深度异常之间的相关性极好。所测得的各向异性也与以前对页岩岩芯样品所作的实验室测定一致。将地震标准层深度与测井深度对比,同时将叠加速度与连续声测井资料对比就可测得各向异性。将适应于椭球各向异性的公式用来提
Velocity Anisotropy of Shales and Depth Anomalies in the North Sea Niranjan C. Banik, Gulf Research & Development Co (S20.1) Conflicts between seismic and logging depths in the North Sea Was used to study the anisotropy of subsurface velocities. The correlation between the shale series (thickness and depth) obtained from the measurements of 21 wells between Norway and the United Kingdom and the resulting anomalies is excellent. The measured anisotropy is also consistent with previous laboratory measurements of shale core samples. Anisotropy can be measured by comparing the depth of the seismic standard with the logging depth and by comparing the stacking velocity with continuous acoustic logging data. The formula adapted to the ellipsoid anisotropy is used to mention