复杂地质情况下的分类型合成地震记录标定技术——以孤南209井区为例

The typical calibration of synthetic seismo- gram in complex geology--A case history of Gunan209 area

高精度合成地震记录标定是精细储层描述的基础。复杂地质条件下,地震资料也复杂,常规的合成记录标定不能达到准确标定的目的。实践表明,复杂地质区块的合成记录标定特别需要做好以下几个方面的工作:①地震资料反射特征分析;②提取符合工区地质特征的空变子波;③按不同地震反射特征分类型进行单井标定;④在研究工区地质规律的基础上进行合理的横向多井联合标定(调整)。本文以孤南209井区为例,介绍在复杂地质情况下分类型合成记录标定的效果。

High-precision synthetic seismogram is the foundation of reservoir fine description. The seismic data acquired from complex geologic area is complicated , so the goal of exact calibration can't be obtained by traditional calibration. Through practice, we understood that there were several jobs should be done in calibration: (1) analyzing seismic data; (2)pick-up space-variant wavelet fitting geology character; (3) making single well synthetic seismogram calibration according to differ characteristicc of seismic reflection; (4) transverse multi-well synthetic seismogram calibration based on studying the characterises of geology. It takes the Gunan209 area as an example to introduce the result of calibration according to different type in complex geologic area.