分频融合反演技术在春光探区的应用

春光探区位于准噶尔盆地西缘车排子凸起，部分储层薄、规模小且横向变化快，常用的高分辨率反演方法不能适用于本区储层预测。为此，本文提出分频融合反演方法，即将常规模型反演结果作为初始模型，利用高频地震资料进行高分辨率反演。该技术通过高分辨率测井约束模型反演提高垂向分辨率，并保证了模型反演的准确性；同时利用地震调谐频率约束进行高分辨率反演，降低了测井资料高频信息横向插值的不确定性。该方法适用于储层较薄且横向变化快的油气区，可为该类油气区的储层预测提供帮助。

Application of segmented-frequency-band fusion inversion in Chunguang prospect area

The Chunguang prospect area located in the west of the Junggar Basin is characterized by thin-thickness,small-scale,and rapid-lateral-variation reservoirs.However,conventional high-resolution inversion methods are not completely applicable for the reservoir prediction in the area.Therefore,we propose in this paper a segmented-frequency-band fusion inversion to predict these special reservoirs.Conventional model inversion results are used as initial model,and high frequency seismic data is processed with high-resolution inversion algorithms.With log-constraint model inversion,this method can improve both the vertical resolution and the lateral accuracy.And the high resolution seismic inversion with tuning-frequency constraints can reduce the uncertainty of horizontal interpolation of high-frequency logging data.The application proves the effectiveness of the proposed method.