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松辽盆地扶余油层地质条件复杂,储层具有“薄、小、散”的特点,尤其是河道砂预测难度较大.为了达到有效刻画河道砂的目的,本文以Z区为试验区,重点采用3项针对性的关键技术——基于正演的属性优选技术、地震反演技术、地震属性融合技术,并重点阐述了多次迭代及分级属性融合技术流程,在此基础上,开展试验区主力油层的属性融合,采用“井点定相、属性定形,反演控界”的方法,实现了Z区主力单元河道砂体的有效刻画.实践证明,反演为渐变型,属性为突变型,二者有机结合,增加河道预测的可靠性,可以作为扶余油层河道砂刻画的有效技术手段,为下一步扶余油层河道砂预测指明了方向.
The geological conditions of Fuyu oil layer in Songliao Basin are complex and the reservoirs have the characteristics of “thin, small and scattered”, especially for channel sand prediction. In order to achieve the purpose of effectively characterizing channel sand, In this paper, we focus on three key technologies: forward-based attribute optimization, seismic inversion and seismic attribute fusion, and emphatically describe the flow of multi-iteration and hierarchical attribute fusion. On this basis, we carry out experiments This paper realizes the effective characterization of channel sand body in the main unit of zone Z. The practice has proved that the inversion is of the gradient type and the attribute As a mutant, the organic combination of the two can increase the reliability of river prediction, which can be used as an effective technical means of sand painting of the Fuyu oil layer, pointing out the direction for the next prediction of channel sand in the Fuyu oil layer.