东营凹陷博兴洼陷沙四段上亚段储集层特征及油气富集规律

从单井相剖面分析出发，对博兴洼陷沙四段上亚段演浅湖砂坝，席状砂两种储集砂体的沉积特征进行描述，阐述了其沉积相纵向及平面演化过程，分析了储集层时空层面及其控制因素，归纳出滩坝储集层发育的五个有利区带并进行了储集层预测，探讨了油气分布与富集成藏的控制因素，文章指出滨浅湖滩坝微相沉积中油气富集的关键是构造与储集层的匹配关系，岩性油藏可作为洼陷勘探的接替目标。

Reservoir characteristics and hydrocarbon enrichment rules in upper Es4 of Boxing subsag in Dongying sag

Depositional features of two kinds of reservoir sandbody (loch sand bar, sheet sand) in upper Es 4 of Boxing subsag are described from the analysis of single well facies profile. The vertical and plane evolution processes of their sedimentary facies are set forth. Time?and?space spread and its controlling factors of the reservoir are analyzed. Five favorable zones with beach?barrier reservoir development are summed up and the reservoirs are predicted. The controlling factors of oil?gas distribution and reservoir forming by enrichment are discussed. It is pointed out that the key of oil?gas enrichment in loch beach bar microfacies sedimentation is the matching relationship between the structure and the reservoirs, and lithologic oil pool may become the next target in subsag exploration.