高分辨率三维地震资料解释技术的应用

Application of high precision 3D seismic data interpretation techniques

大庆油田物探研究所,黑龙江大庆 163357

Daqing oil field Geophysical Research Institute, Daqing 163357, China

在兴城工区进行了精细的高分辨率地震资料解释方法应用研究。在构造解释中,应用了剖面和相干体切片等对比解释的精细断层解释技术及全三维人机交互构造解释技术;在岩性解释中,通过回归分析法和神经网络法对地震属性和岩石的物理特性之间的具体函数关系进行了分析,选取相关性高的属性,以沉积微相为指导,应用LPM软件实现储层的定量预测;根据圈闭条件和储层物性对油气的控制作用,对油藏类型和油气富集规律进行了分析,详细了解了该区的地质情况,最终解释圈闭幅度精确到5m,在井约束下预测的砂岩厚度精确到2m。

Fine high resolution seismic data interpretation was carried out in Xingcheng survey area. In structural interpretation, detailed fault interpretation techniques like correlation between seismic sections and slices of coherence cube, and full 3D structural interpretation techniques are used. In lithologic interpretation, seismic attributes are firstly related to petrophysical properties by regression analysis and neural network methods, and then with attributes of high correlation coefficient, quantitative prediction of reservoir is performed by LPM package under the guide of sedimentary microfacies. The types of reservoirs and the regularity of hydrocarbon concentration are inferred according to entrapment conditions and the petrophysical properties of reservoirs. With more accurate knowledge of the geology in the survey area, the prediction precision reaches to 5m for reservoir range, and 2 m for sandstone thickness with well controls.