分频融合反演技术在春光探区的应用  

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

作　　者：张新超[1] 李锋[1] 严永新[1] 王勇[1] 张驰[1] 岳欣欣[1] 

机构地区：[1]中国石化河南油田分公司勘探开发研究院,河南南阳473132

出　　处：《石油地球物理勘探》2018年第5期1006-1013,共8页Oil Geophysical Prospecting

基　　金：中国石化科技部项目"准噶尔盆地大中型油气田目标评价与勘探关键技术"之子课题"准噶尔盆地地震勘探关键技术研究"(P17001-3)资助

摘　　要：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。The Chunguang prospect area located in the west of the Junggar Basin is characterized by thinthickness,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.

关 键 词：春光探区 薄储层 分频融合反演 储层预测 

分 类 号：P631[天文地球—地质矿产勘探]