高精度三维多波层位匹配技术在大庆地区的应用

本文基于多波多炮检距合成地震记录技术，在含目的层时窗内通过子波、时深关系、相关系数的调整，利用模拟退火寻优算法确定纵波和转换横波对应层位，并给出检验结果准确性的相关依据。该方法层位标定准确、结果客观、人为干预因素少。通过调整纵、横波速度比，可将转换横波数据压缩至纵波时间域，从而实现纵波、转换横波成果的同域（纵波时间域）对比。应用结果表明，利用上述方法进行纵波、转换横波层位标定准确性高，多井标定结果一致性好。

Horizon matching with high-precision 3D multi-waves in Daqing Area

In this paper, an approach for horizon matching with 3D multi-wave data is proposed. Simulated annealing algorithm is used to determine horizons on P- and PS-wave data by adjusting wavelet, time-depth and correlation coefficient in windows with target horizons on multi-offset and multi-wave seismic synthetics. By adjusting the P-wave and S-wave velocity ratio, converted-wave data can be compressed in the P-wave time domain. Therefore the comparison between P-wave and PS-wave in the same domain can be achieved. Results obtained by this method are accurate and objective with very low human intervention. Application results in a study area of Daqing Oilfield show that horizon calibration accuracy with P- and PS-waves is very good and multi-well calibration consistency are improved.