美国尤金岛油田三角洲复合体的地震地层学、岩相结构和油藏特征
摘要
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。
The paper analyzes seismic stratigraphy, facies architecture and reservoir character of a delta complex, Eugene Island field. The production characteristics of the GA interval and comprehensive sequence stratigraphy interpretation show that hydrocarbon accumulation in the GA intervals is primarily associated with updip facies (mouth bar, delta front) beneath the flooding surface at the top of the interval, and not the sequence boundary at the base of the interval. The top of the GA interval shows patchy (mouth bar deposits) and curvilinear (interdistributary delta front) seismic amplitude anomaly. There is good relationship between seismic amplitude and production characteristics, with the best producton being from high amplitude areas that sit high on the structure.
The paper analyzes seismic stratigraphy, facies architecture and reservoir character of a delta complex, Eugene Island field. The production characteristics of the GA interval and comprehensive sequence stratigraphy interpretation show that hydrocarbon accumulation in the GA intervals is primarily associated with updip facies (mouth bar, delta front) beneath the flooding surface at the top of the interval, and not the sequence boundary at the base of the interval. The top of the GA interval shows patchy (mouth bar deposits) and curvilinear (interdistributary delta front) seismic amplitude anomaly. There is good relationship between seismic amplitude and production characteristics, with the best producton being from high amplitude areas that sit high on the structure.
引文
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心