Abstract: Reservoir rocks formed in the river-deltaic environment of an interior lake basin include generally the following four kinds of sandstone bodies: flood plain river-channel sandstone, distributary sandstone, distributary bar and sheet sandstone in the delta front. Different from each other in geological characteristics, these sandstone bodies have different behaviour in the process of development by water flooding, hence different methods are to be used for enhancement.

摘要： 研究砂岩体沉积环境已成为石油地质科学发展的一个重要方面。大庆油田主要油层是在大型内陆湖盆的河流-三角洲环境下沉积的。它包括河道砂岩、分流河道砂岩、河口砂坝砂岩以及三角洲前缘席状砂岩等。