Abstract: This paper gives a detailed study of the distribution and characteristics of the proven abnormally high pressure hydrocarbon reservoir in Dongying Basin and an analysis of the cause of pressure increase in a reservoir. The author considers that the formation of abnormally high pressure hydrocarbon reservoir in Es3 and Es4 source rocks is the result of a combination of undercompaction and temperature. Based on the relationship that pressure coefficient increases with the depth as well as with the temperature, a new method of prediction for abnormally high pressure hydrocarbon reservoir is presented.

摘要： 本文在研究东营盆地已知高压油气藏特征的基础上,对油藏增压原因作了分析,初步认为:位于沙三、沙四段生油岩中的高压油气藏,除了欠压实作用是增压的主要原因外,温度也是一个重要原因。根据压力系数随深度增加而增大和压力系数随温度增高而增大的关系式和曲线图,为高压油气藏勘探找到了一个新的预测方法。

关键词: 东营盆地, 高压油气藏, 油气藏特征, 油气成因, 压力异常