井震融合平面波分解地层倾角计算方法与应用

基于倾角测井得到的井口附近高精度倾角数据,提出了一种井震融合的平面波分解地层倾角计算方法。在有倾角测井的探区,根据Tikhonov正则化的思想在平面波分解滤波器中引入地层倾角测井数据约束,井震融合计算空间任意点的地层视倾角,通过三角变换将视倾角转化为真倾角和真倾向。理论模型测试及实际资料应用结果表明,该方法估计的地层倾角和地层厚度转换结果比常规平面波分解计算得到的结果更精确,具有一定的实际应用价值与推广意义。

Dip logging can obtain high precision dip angle data near the well trajectory.This paper proposes a method of calculating the formation dip angle by the plane-wave decomposition,based on logging and seismic integration.In the exploration area with dip logging,based on the idea of Tikhonov regularization,this method was used to calculate the apparent formation dip at any point in space by logging and seismic integration,through plane-wave decomposition filter with dip logging data as constraints.The calculated apparent dip was subsequently transferred to the true dip angle and tendency,using the triangle transform.Testing on both synthetic and field data showed that the proposed method estimated the formation dip angle and thickness with an accuracy higher than that of the common plane-wave decomposition dip calculation method.This indicates its practical application value and potential for widespread use.