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随着地震勘探的不断发展以及勘探领域的不断扩大,需要处理的勘探资料也不断增加,对速度分析中速度谱的拾取效率和精度提出了更高的要求.一直以来,速度谱中叠加速度的拾取,受限于人眼对速度谱能量团聚焦中心的识别能力,从而使得拾取速度精确度不高.基于非线性函数的智能拾取是通过确定的目标函数,运用非线性函数作为合理约束条件来实现的.此方法针对速度谱的能量团分布规律自动设置约束参数.应用效果表明该方法不仅能实现速度谱智能拾取,而且拾取的叠加速度在精度上逼近真实的叠加速度.
With the continuous development of seismic exploration and the continuous exploration in the field of exploration, the amount of exploration data to be dealt with has also been on the increase, putting forward higher requirements on the efficiency and accuracy of velocity spectra in velocity analysis. The pick-up is limited by the human eye’s ability of recognizing the focus center of the velocity spectral energy, so that the accuracy of the pick-up speed is not high.The intelligent pick-up based on the nonlinear function is based on the determined objective function and the nonlinear function as a reasonable constraint This method automatically sets the constraint parameters for the distribution rule of the energy spectrum of the velocity spectrum.The application results show that this method can not only realize the intelligent picking of the velocity spectrum but also the accuracy of the stacking velocity to approximate the actual stacking velocity.