储层地震反演方法及其在Q三维工区的应用

目前国内外利用地震资料进行储层预测时,采用的方法较多,但均存在一定问题(如反演分辨率低、多井外推及井间不闭合等).针对Q三维地震工区目的层砂体薄、横向变化快的特点,在Strata软件上相继采用了三维波阻抗反演、测井参数反演和多属性伽马反演3种反演方法进行试验,最终确定了多属性伽马反演方法能较好地解决利用地震资料进行储层预测的一些问题,从而为工区勘探开发提供了可靠的高精度反演资料.

Method of Reservoir Seismic Inversion and Its Application in the Q 3D Survey

There are many approaches in the terms of using seismic data to predict the reservoir in China and abroad. However, problems still exist such as low resolution of inversion result, multi-well extrapolation and mis-closure of inter-welL Aimed at the zone of interest in the Q 3D seismic survey, which is character-ized by thin sand body as well as the quickly lateral alternation, three inversion methods of Strata software are put into use, including the 3-D wave impedance inversion, the well log parameter inversion, and multi-attribute gamma inversion. The method of multi-attribute gamma inversion has been proved to be the best way to solve the problems above. It offers high precision seismic inversion data for the exploration and de-velopment in the working area.