井震结合地震属性反演方法及应用

The seismic attribute inversion method and application upon the union of wells and seismic

地震属性是由地震数据衍生出的几何形态、运动学、动力学以及统计特征的特别量度。根据地震属性与岩层物性的统计关系推断地下岩层物性和油气分布的技术称为地震属性反演。本文介绍了井震结合地震属性反演方法的基本原理,并在我国西部某气田进行了实际应用。该方法充分利用了钻井资料纵向精细、横向稀疏,地震资料纵向粗略、横向密集的特点,更精确地刻画砂体,针对该气田二叠系储层非均质性强,砂体横向追踪困难的特点,取得满意效果。

The physical properties of underground rock or fluid property changes, will cause seismic kinematics and dynamics characteristics of the relative changes. What reflect these characteristics of geophysical parameters have the frequency, amplitude and time over a hundred species of property known as the seismic attribute. According to these attribute and the known information of the statistical relationship it can be inferred that physical parameters of underground and oil and gas distribution, and this technology is known as the seismic attribute inversion. In this paper, the basic principle of seismic attribute inversion method is introduced, and it is applied in the West gas field to predict reservoir. The method makes full use of fine vertical drilling data, seismic data--intensive features of the horizontal, a more accurate portrait of sand body. In view of the feature of West gas field, and it achieved satisfactory results.