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在构造活动强烈、水动力条件活跃的地区，油气藏的分布位置与构造圈闭不一定完全匹配，它们之间可能有一段位移。如何利用现有的油、气、水资料预测油气藏的分布位置，Ｄａｈｌｂｅｒｇ于１９８２年提出了油气藏的水动力圈闭勘探法（Ｕ－Ｖ－Ｚ法）。本文介绍其原理和在南堡凹陷柳赞油田ＥＳ３（５）地层实际应用的情况，不仅预测了油藏的分布位置，还合理解释了所谓“水洗层”现象。
In areas with strong tectonic activity and hydrodynamic conditions, the distribution of oil and gas reservoirs may not exactly match the structural traps, and there may be some displacement between them. How to use the existing oil, gas and water data to predict the distribution of oil and gas reservoirs, Dahlberg proposed the hydrodynamic trap exploration method (U-V-Z method) of reservoirs in 1982. This paper introduces the principle and the practical application of the ES3 (5) formation in the Liuzan oil field in Nanpu Depression. It not only predicts the distribution of the reservoir but also explains the so-called “water wash layer” reasonably.