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胜利油区孤北洼陷是一个富生烃洼陷 ,在其周围已经发现多个大油田 ,已证实其主要生烃层系为沙三段烃源岩。但在前期勘探过程中有许多探井发现的含油层其埋藏深度都超过了洼陷中沙三段的最大埋深 ,这些超深油藏是属于沙三段生成油气的“倒灌” ,还是来自可能埋藏更深的烃源层系 ?文中对孔店组的生烃条件及潜力进行了初步探讨 ,指出孔店组是该区含油层系中一个可能的烃源层系 ,并对其生烃潜力进行了预测 ,不仅解释了超深油气藏的形成问题 ,而且为该区下一步勘探打下了基础 ,并为长堤古潜山的勘探提供了新的思路
Shengbei Oilfield Gubei depression is a rich-producing hydrocarbon depression, in the vicinity has been found in a number of large oil fields, it has been confirmed that the main hydrocarbon generation system is the third member of the source rocks. However, during the previous exploration, many exploration wells discovered that the buried depth of oil-bearing reservoirs exceeded the maximum buried depth of the third member of the Middle and Lower Shales. These ultra-deep reservoirs belong to the “backfill” In this paper, the hydrocarbon generation conditions and potential of the Kongdian Formation are preliminarily discussed. It is pointed out that the Kongdian Formation is a possible hydrocarbon source in the oil-bearing strata of this area, and its hydrocarbon potential The prediction not only explains the formation of ultra-deep reservoirs, but also lays the foundation for further exploration in the area and provides a new idea for the exploration of the buried hill in Changdi.