【摘要】 本文针对松辽盆地北部扶杨油层赋存的泉头组三-四段河道砂体地震识别问题开展了地震地质综合研究。以高分辨率层序地层学原理和沉积岩石学理论为指导,识别了沉积微相和河道砂体沉积特征,用钻井和地震联合分层对比的方法建立层序地层格架和区域沉积微相展布模式,确定了地震剖面上具有可对比追踪性的四级层序界面。通过地震多属性多元回归与聚类分析拟合含砂率,在沉积模式的指导下对含砂率平面图进行沉积微相解释,确定河道砂体的空间展布和有利区,经钻探验证说明取得了较好的预测效果。更多还原

【Abstract】 An integrated seismic-geologic study was implemented in this paper,focusing on seismic i- dentification of channel sand-bodies in Fu-Yang oil layer hosted in Members 3-4,Quantou For- mation in the northern Songliao Basin.In the light of the high resolution sequence stratigraphy and sedimentary petrography,a sedimentary model for microfacies and channel sand-bodies was set up.Based on a synthetic method of drilling and seismicity,and combined to layered com- parison,the framework of stratigraphyic sequence and the regional distribution modes of micro- facies were established,and the contact boundaries of fourth-order sequence which was correla- tive and traceable in seismic sections were identified.Sand ratio was matched based on multi- ple regression and clustering analysis on multiple seismic attribute.Micro-facies was interpre- ted from the plan diagram of sand ratio under the guidance of sedimentary model,and the spa- tial distribution of channel sand and the payable areas were identified.The drilling exploration demonstrated that a good forecasting effect was obtained by this method.更多还原