塔东地区深水重力流沉积体地震刻画
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摘要
随着塔东地区勘探的深入,通过岩心和野外露头的观察,在古城东斜坡和罗西西斜坡都发现寒武系重力流沉积的证据。由于工区井数量有限,很难通过井资料控制重力流的沉积范围。利用地震相标志对台缘带进行了刻画,借用地震沉积学、地球物理反演和地震属性的方法刻画出塔东地区深水重力流的平面展布,编制了塔东地区上寒武统岩相古地理图,为今后塔东地区勘探领域由台地相向斜坡和盆地方向扩展打下了坚实的基础。
With the deepening of oil exploration in Tadong Area,through the observation of cores and outcrops,the evidences of the Cambrian gravity flow deposits were found in the eastern slope of Guchen Area and western slope of Luoxi Area.Due to the limited well numbers in the wellblock,it was difficult to control the deposit range of gravity flow through well data.So,the seismic facies markers were used to characterize marginal belts of the platform.By taking the advantages of sedimentology methods and geophysical inversion and seismic attribute methods to characterize plane distribution of deep water gravity flow in Tadong Area,an ancient geographic map of upper Cambrian rock facies of Tadong Area is plotted,it provides an excellent basis for spreading from tableland facies slope to the basin in the exploration domain of Tadong Area in the future.
引文
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