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针对隐蔽油气藏成因和分布规律复杂、勘探技术要求高的特点 ,把层序地层学方法应用于陆相湖盆隐蔽油气藏的勘探。在高分辨率层序地层研究的基础上 ,对沉积体系进行精细的解剖分析 ,研究沉积作用发生和演化的机制 ,探讨隐蔽油藏 (圈闭 )分布的边界条件 ,进而形成了关于斜坡带低位扇砂岩体隐蔽油藏 (圈闭 )分布与预测的地质方法和技术 ,初步提出了湖相盆地“低位扇”和“坡折带”的理论。以埕岛地区东部斜坡带为例 ,介绍了斜坡带低位扇砂体岩性油气藏的勘探思路和方法 ,使该类砂体油藏预测的成因类型和分布规律更加清楚 ,有效地指导了对该类油气藏的勘探。
In view of the complicated genesis and distribution of subtle reservoirs and the high requirement of exploration technology, the method of sequence stratigraphy is applied to exploration of subtle reservoirs in continental lacustrine reservoirs. Based on the study of high-resolution sequence stratigraphy, the sedimentary system is analyzed finely to study the mechanism of sedimentary evolution and evolution, and to explore the boundary conditions of subtle reservoir (traps) distribution, The geological methods and techniques for the distribution and prediction of subtle reservoirs (traps) of fan-sandstone bodies have initially put forward the theory of “low fan” and “slope break zone” in the lacustrine basin. Taking the eastern slope belt in Chengdao area as an example, the exploration ideas and methods of low-grade fan-body lithologic reservoirs in the slope are introduced, the types of formation and distribution of these types of sand bodies are more clearly understood, Exploration of such reservoirs.