地震振幅的多井质控技术及应用

Multi-well quality control technology and application of seismic amplitude

当前井控振幅处理技术是利用单井数据对井旁道振幅恢复效果进行质控,但无法应对多井之间参数差异,以及无法对远离井位置的数据恢复效果进行约束。这里以相关系数为标准优选质控井,以井合成地震记录的振幅能量趋势为标尺,对球面扩散中的指数函数补偿方法中n参数的补偿效果进行质控,保障地震数据在垂向的能量趋势的正确性;以两口质控井和层位数据为基础构建联井数字模型,基于模型模拟的联井剖面为标准,对指数补偿方法中参数n和区域振幅补偿因子进行质控,保障远离井点的地震数据的振幅趋势的正确性。结果表明:为地震数据保幅处理提出质控方法是行之有效的,为地震数据的垂向和横向的振幅相对关系的正确地判别提供了依据。

The current well control amplitude processing technology uses single well data to control the amplitude recovery effect of sidetrack,but it can't deal with the parameter difference between multiple wells and control the data recovery effect far away from sound points.This paper uses the correlation coefficient as the standard to optimize the quality control wells.The amplitude energy trend of well synthetic seismic records is used as the scale to control the compensation effect of n parameter in the exponential function compensation method to ensure the correctness of the vertical energy trend of seismic data.The S-shape well model is constructed based on the logging data of two quality control wells and interpretation horizon.Based on the S-shape well model profile as the standard,the compensation effect of n parameter and regional amplitude compensation factor are controlled to ensure the correctness of the amplitude trend of seismic data far away from well points.The results show that the quality control method proposed in this paper for amplitude preserving processing of seismic data is effective and provides a basis for judging the correctness of the relative relationship between vertical and horizontal amplitude of seismic data.