【摘要】 针对塔中地区碳酸盐岩埋藏深度大、横向非均质性强、岩层顶面地震反射强而内幕地震反射弱且分辨率低等地震地质特点,充分利用三维地震信息,精细解释了上奥陶统桑塔木组内部地震反射强振幅、强连续等时界面和碳酸盐岩顶界面,刻画了塔中Ⅰ号坡折带奥陶系碳酸盐岩台地—陆棚边缘高能礁滩体的地貌学特征,建立了碳酸盐岩建隆的地震地质模式。该模式为全面认识该区碳酸盐岩建隆沉积体系的发育特征和分布范围提供了重要依据,并在该区奥陶系凝析气田勘探、有利勘探区带评价和储量评估中得到了成功应用,取得了良好的经济效益。更多还原

【Abstract】 The paleogeomorphologic method is applied to demonstrate high-energy reef-shoal facies of carbonate paleoplatform-shelf margin by 3-D seismic interpretation of an isochronous surface in Upper Ordovician Sangtamu Formation and the top surface of Upper Ordovician Lianglitage Formation according to geological and seismic characteristics of carbonate reservoir. A seismic-geologic model of reef-shoal is built on the basis of seismic attributes and geological analysis for carbonate reservoir, which is an important proof to study reef-shoal system of Lianglitage Formation and evaluate favorable plays and reserves in prospecting Ordovician condensate field.更多还原