An application of the stratal slicing technique to the xb1p1 seismic project in the Songliao Basin
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摘要: 本文以地层切片技术为基础,以松辽盆地xblp1工区嫩江组萨尔图油层为例,分析了该技术在沉积环境研究中的应用。研究表明,高精度三维地震工区为开展地震沉积学研究提供了方便的基础资料,在对研究区内各个层序界面精细解释的基础上,制作了不同三维地震工区的一系列的地层切片,这些切片提供了萨尔图油层不同沉积体系的分布特征,刻画了三角洲和湖泊沉积体系在不同时期的展布范围。地层切片技术有利于层位的等时分析和宏观沉积体系的刻画。值得注意的是,地层切片属性分析图上,并不是所有的强振幅都代表砂岩而弱振幅都代表泥岩,需要结合岩心相、测井相进行校正,方可准确识别出沉积体系。Abstract: The present paper deals with the application of the stratal slicing technique as a key technique in seismic sedimentology to the Sartu oil reservoirs from the Nengjiang Formation in the Songliao Basin. Numerous stratal slices for individual 3D seismic projects are constructed in the light of the refined interpretation of distinct sequence boundaries in the study area. These slices help clarify the distribution of the depositional systems in the Sartu oil reservoirs, and assist in the isochron analysis of favourable horizons and macroscopic delineament of the depositional systems. Of course the stratal slicing technique should be integrated with core examination and well logs so as to distinguish the depositional systems in precise terms.
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