【摘要】 塔河油田于奇地区三叠系是重要的产油层,其中、上三叠统与下三叠统呈2个相反的"楔状体",沉积体系的空间配置关系复杂。加之该区储层类型多样,纵横向非均质性强,储层预测难度较大。综合利用地质、地震、测井、钻井等资料,建立符合实际地质条件的地震地质模型。参照实际的采集参数和观测系统设计,采用非均匀介质条件下导出的二维声波波动方程交错网格有限差分法进行模拟,总结出地震尖灭点与实际模型尖灭点的偏移距离关系,优选出与含油气性具有强相关性的地震属性,并成功应用到实际的地震地质解释和储层预测工作中,降低了油气勘探风险,取得了良好的效果。更多还原

【Abstract】 Triassic stratum was an important pay zone in Yuqi Area of Tahe Oilfield,where the upper Triassic and lower Triassic strata were 2 opposite "wedge" type reservoirs,its depositional system was complicated in space.Moreover,the reservoir types were of varieties with strong heterogeneity in horizontal and vertical directions,it was difficult for reservoir prediction.Seismic geological model was established by using geological,seismic,well logging and drilling data according to the actual geological conditions.By referring the actual acquisition parameters and observing systems,2-dimensional acoustic wave equation staggered-grid finite differential method was used for simulation by using heterogeneity conditions.The relationship of offset distance between the pinch-out points of seism and actual model was summarized,seismic attributes associated with the hydrocarbon were selected.It is used in actual seismic interpretation and reservoir prediction for reducing the risk of oil and gas exploration,and good results are achieved.更多还原