【摘要】 层序格架控制了油气藏形成和储量的分布,不同体系域内储量分布差异明显,低位体系域储量占绝对优势。不同地质背景下地层形成过程不同,油气成藏、赋存方式的不同形成了不同的勘探模式。不同勘探阶段的勘探目标和方法不同。勘探预备阶段通过对盆地生油层系(主要是密集段)的分析,确定潜在资源量,解决盆地内有无油气的问题。勘探早期主要是确定远景勘探区,格架内的生储盖配置关系和运移路径的研究是重点。勘探中期的目标是油气藏,通过对构造的落实和储层展布的预测,发现油气藏、落实油气藏。进入滚动勘探扩边阶段,预测非主体部位的储层发育特征是发现新的油气藏的重要手段,在主体油气藏外围预测有利的储层发育带和较好的圈闭或在油藏内的差储层中或非储层段内预测有效储层,以增加储量。高分辨率层序格架对油气分布的控制基于其对储层展布和储层非均质性的控制。在中长期基准面的低部位,砂体物性好,连续性强,油气藏规模较大,易于发现,故在勘探中后期,多难于有新的储量发现,相反在中长期基准面的高部位的小规模隐蔽油气藏,在勘探后期是储量增长的重要领域。更多还原

【Abstract】 Sequence stratigraphy frame work controlled the foundation of reservoir and reserve distribution. There is an obvious difference in hydrocarbon distribution in different system tract and different sedimentary sets, but reserves in low system tract play the most important role. In the sequence stratigraphy frame work, the role and method for each step of exploration is also different from resource prediction based on the resource rock evaluation in the initial exploration stage to reservoir discovery based on the trap and reservoir body characterization in the exploration and to remaining reservoir find in the mature field. And in the frame work of baselevel, the distribution of reserve is also not homogeneous. The sand at the low location of the baselevel is wide spread and often with large amount of reserves, while sand at the high location is limited and with a few reserves. And also the high location is often become the potitial reserve increasing place for its limited sand distribution.更多还原