对东营凹陷胜坨油田的成藏期次和成藏过程进行了研究,结果表明,东营凹陷北部陡坡带具有两期成藏的地质条件,例如北部胜坨油田就经历了早期(东营组末期)的油气聚集、破坏和晚期(明化镇组时期)的油气再聚集、调整的过程;胜坨地区各含油层系中原油物性、生标特征及油源对比结果为该两期成藏提供了直接的地球化学证据。认为胜坨油田两期成藏对油气储量分布具有明显的影响。

The analysis of reservoir-forming terms and its procesure of Shengtuo oilfield in Dongying sag proves that the northern steep slop zone of Dongying sag has the geological condition of two terms of reservoir-forming.The crude oil biologic criteria and petrphysical characteristics and the result of oil and source rock correlation for all the oil-bearing formations provides direct geochemical evidence.The Shengtuo oilfield in Dongying sag under goes two procesures: accumulation and breakdown in the early time(Oligocene), th e 2nd accumulation and adjustment in the later time (Pliocene). The two terms of  reservoirforming has an obvious effect on the reserves distribution in Shengtuo  oilfield. 