松辽盆地古龙凹陷英台地区泉头组三、四段层序地层格架建立

Establishment of Sequence Stratigraphic Framework of 3-4 Section of Quantou Formation in Yingtai Area of Gulong Sag in the Song-Liao Basin

现今深化松辽盆地中浅层在精细勘探的工作中,古龙地区是扶余油层泉头组三、四段,继长垣、三肇、龙虎泡之后的一个重要勘探接替领域。目前扶余油层共划分为5个四级层序,扶一油层组单层厚度21~42m;扶二油层组厚度30~50m;扶三油层组80~115m。显然这种级别的层序划分得很粗,我们需要对扶余油层高频层序格架内地层进行精细刻画与预测。针对古龙凹陷南部英台—新站地区泉头组三、四段采用高分辨率层序地层学方法进行等时地质界面识别与追踪技术,综合运用岩芯资料、测井相资料以及地震相资料,三者相互印证,建立松辽盆地英台—新站地区泉头组三、四段层序地层格架,从而对扶余油层高频层序格架内地层进行精细的刻画与预测。

In the deepening study in northern Song-Liao basin exploration work, Gulong area of Fuyu oil layer is the replacement of important exploration after Changyuan, Sanzhao, Longhupao, is one of the important exploration targets backup reserves. Currently, Fuyu reservoir is divided into five level Ⅳ sequence, Ful thickness of reservoir group is 21-42m; Fu2 thickness of reservoir group is 30-50m, Fu3 thickness of reservoir group is 80- 115m. This level of sequence classification is obviously too sketchy, it need high frequency sequence framework layer on the mainland for fine characterization and prediction. In Yingtai-Xinzhan area of three or four segments of Quantou formation, using high resolution sequence stratigraphy method make geological interface recognition and tracking, with the integrated use of core data, logging data and seismic facies data, and establish Quantou three or four period of sequence stratigraphic formation framework in Song-Liao basin, thus make fine characterization and prediction for the high frequency sequence framework of Fuyu oil layer.