岩性油藏已成为松辽盆地南部中浅层勘探的主要油藏类型,而河道砂体的识别一直是物探工作者长期研究的重点。此次研究选择了查干花地区新施工完成的三维地震,在"弃砂找河,扬河找砂"的新思路指导下,准确标定目的层及参考标志层并进行精细解释,应用地震属性分析技术进行地震相划分、河道刻画,进而寻找河道砂体。研究认为,在半深湖—浅湖沉积环境下,三角洲前缘水下分支河道和河道间沉积体在地震上有响应,应用地震属性对河道进行了刻画,据此部署探井获得高产油流。

Lithologic reservoir has been the main reservoir type in shallow and middle strata exploration in southern Songliao Basin，but the identification of channel sand body is stilla challenge for the geophysical researchers for a long time.On the basis of 3D seismic newly finished in Chahuagan area and the new idea of“searching for river rather than sand，then river for sand”，calibrating the target is to carry out the interpretation accurately. Using seismic attributes analysis technique to divide seismic facies and identify the stream channel in order to find out the channel sand body was carried out.The results howed that it is possible to identify the stream channel by using the seismic attributes under the semi-shallow and shallow lake sedimentary environments，and that the lateral information ofthe seismic data supports the vertical resolution.This technique makes a high oil production.