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本文介绍的尤金岛油田GA层段的产层特征和层序地层学综合研究成果表明,层段内油藏的分布主要受位于海泛面之下层段顶部的上倾岩相(三角洲、河口坝、三角洲前缘砂)控制,而与层段底的层序底界面无关;GA层段顶部的地震振幅异常呈分散块状(河口砂坝)和弯曲带状(分流河道间三角洲前缘);地震振幅值与产层特征间有较好的对应关系,即高产井均位于高振幅值区。
This paper describes the characteristics and sequence stratigraphy of the GA layer in the Eugene Island oilfield and shows that the distribution of reservoirs in the interval is mainly affected by the upwelling facies located at the top of the lower part of the sea surface (delta, estuary But not to the bottom interface of the sequence stratigraphy. The anomalous seismic amplitude at the top of the GA interval is dominated by scattered blocks (estuarine sand dam) and curved strip (delta front of distributary channel) There is a good correspondence between the amplitude of the earthquake and the characteristics of the formation, that is, the high-yielding wells are located in the high-amplitude region.