关键词: 水动力圈闭, 油水界面, 测势面, 单北油藏, 酒西盆地

Abstract: The Shanbei oil pool in Jiuxi basin with sandstone reservoir beds of the Huoshaogou Formation of the Eogene,has long been taken as an example of hydrodynamically trapped oil pools.The author made a profound analysis about the so-called Shanbei bydrodynamically trapped oil pool according to the theoretical conditions for the formation and preservation of a hydrodynamic trap and the practical hydrodynamic conditions of Shanbei oil pool,and found that even if the sandstone reservoir beds ofHuoshaogou Formation in Shanbei area composed a complete flexure without cutting of faults,the hydrodynamic conditions now existing in the formation under interest can by no means keep a "hydrodynamic trap".

Key words: hydrodynamic trap, oil-water contact, piezometric surface, Shanbei oil pool, Jiuxi Basin