多地震属性同位协同储集层地质建模方法

介绍了多地震属性提取及分析的基本原理, 提出具体研究思路: 首先提取多种地震属性进行聚类分析, 选取地震属性组合, 拟合与井点砂体厚度的相关性, 得到砂体厚度的平面分布预测; 然后在地质建模软件中, 利用变差函数, 进行空间相关性分析, 进而协同井间砂体厚度分布预测结果, 建立三维砂体骨架及属性参数模型, 以此定量表征储集层的三维空间分布特性及其非均质性。以大庆杏树岗油田杏56 井区为例, 指出将多地震属性分析结果协同储集层地质建模, 可以综合地震、地质、测井等多方面信息, 可为充分有效地综合利用多尺度信息提供良好平台。

Reservoir Geological Modeling with Multi-Seismic Attributes Collaboration

The basic principles for multi-seismic attributes extraction and analysis are presented, including interwell attribute prediction algorithm, cluster analysis algorithm, regionalized variable analysis of structure and collaborative Krikin algorithm, etc. The procedure includes extracting the multi-seismic attributes for cluster analysis, selecting the seismic attribute combination, simulating correlation with sand thickness of well, predicting the lateral distribution of sand thickness, making spatial correlation analysis using variogram tool of the software for geological modeling, collaborating the predicted interwell sand thickness distribution results, and then developing 3D sand matrix and attribute parameter models for quantitative characterization of spatial distribution and heterogeneity of reservoir. Taking an example of Wellblock Xing-56 in Xingshugang oilfield of Daqing, it is suggested that the reservoir geological modeling collaborated with the multi-seismic attribute analysis results is favorable for combination of a variety of information such as seismic, geological and well log data in order to provide a good platform of fully effective and more comprehensive use of multi-scale information.