| 摘要: |
| 本文对阳信洼陷三维地震资料进行时频分析划分层序，对测井曲线进行小波变换进行层序划分，以合成记录标定为桥梁，运用高精度测井曲线划分的层序去相互约束校正地震资料划分的层序，通过井震联合的多尺度匹配方法建立层序地层格架，从而实现三维地震资料和测井资料在同一级别研究目标上的综合解释，将YX洼陷沙四上段地层划分为3个四级层序和9个五级层序。实际应用效果证明，该方法能够发挥地震资料横向分辨率高与测井资料纵向分辨率高的优势，勘探效果良好。该方法适用于大部分稳定的陆相坳陷湖盆沉积环境的层序划分。 |
| 关键词: 时频分析 层序界面 小波变换 井震联合 |
| DOI： |
| 附件 |
| 投稿时间：2018-09-11修订日期：2018-10-23 |
| 基金项目:国家重大专项“胜利油田特高含水期提高采收率技术（二期）”（编号：2016ZX05011-02）、胜利油田分公司课题“低序级断层识别描述技术深化研究”（编号：YKY801）资助 |
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| Sequence stratigraphic division based on well logs and seismic data: An example from the upper submember of the 4th member of the Shahejie Formation in the Yangxin depression |
| LIU Qiliang |
| (Research Institute of Geophysical Exploration, Shengli Oil Field Company, SINOPEC, Dongying 257000, Shandong, China) |
| Abstract: |
| The sequence stratigraphic division in this study is conducted on the basis of well logs and seismic data for the upper submember of the 4th member of the Shahejie Formation in the Yangxin depression. The sequence division is firstly made with the aid of time-frequency analysis of the seismic data, and then followed by the wavelet transformation analysis of the well logs for the study area. According to the integrated interpretation of 3D seismic data and well logs, three fourth-grade sequences and nine fifth-grade sequences have been distinguished for the upper submember of the 4th member of the Shahejie Formation in the Yangxin depression. The analytical methods outlined above may increase the efficiency of petroleum exploration due to high horizontal resolution of the seismic data and high longitudinal resolution of the well logs, and thus may apply to the sequence division in the stable continental downwarped lacustrine basins. |
| Key words: time-frequency analysis sequence boundary wavelet transformation integration of well logs and seismic data |
