塔河油田卡4段地层相控储层预测

Prediction of facies-controlled reservoir karratha four in Tahe oilfield

塔河油田石炭系卡4段储层灰岩含量较高,造成地震预测多解性严重,文章提出相控储层预测的思路和研究方法:提出以区域等时地层格架为约束的局部区域和同一沉积体系的准层序级别的砂体等时对比新思路,以Wheeler域年代地层切片技术为手段建立精细等时层序地层格架,进而开展准层序级别的变时窗属性提取分析,采用振幅和伪熵属性表征卡4段沉积微相展布,以Wheeler反变换技术实现了实践意义上的相控储层预测理念,雕刻了有利储层空间形态,为该区岩性圈闭的发现提供了参考。

According to the characteristics of Karratha reservoir, containing Carboniferous and sand impedance close with shale＇ s, the article puts forward reservoir prediction with facies controlled. Research proposes to Wheeler realm slicing techniques, and offers new method to build high resolution regional stratigraphic framework for the constrained local area or short-term cycles corresponding to the small-scale sand bodies, and achieves the sub frequency profiles of short-term cyclic order tracking interface contrast. Combined with variable time window corresponding to the short-term cyclic sequence Wheeler scaling attribute techniques accurately characterized the micro-facies of short-term sand with pseudo seismic entropy and amplitude properties, and improves the studying accuracy of Ka 4 reservoir. The Research chose re-wheeler technology for reservoir prediction with facies-controlled, describe sand shape by inversion. The research carry out the practical significance of the concept of facies-controlled, provided the reference for forecasting lithologic traps.