论文部分内容阅读
渤海湾盆地中超过亿吨储量的大油田很多，宏观上看，具有上第三系（上层）、下第三系（中层）及前新生界（下层）三层结构样式，而且在盆地中含油层位的多少，有呈半环状分布特征。大油田在构造上大部分位于生油凹陷中的中央凸起或背斜带上，这里至少有两个方向供油；也有位于凹陷的缓坡上的，因为有广阔的储集层分布。目前看，渤中坳陷中大油田还少，值得今后重视。
In the Bohai Bay basin, there are many large oilfields with over one hundred million tons of reserves. In a macroscopic view, there are three-tier structural styles of the Upper Tertiary (upper), lower Tertiary (middle) and pre-Cenozoic (lower) and contain oil in the basin The number of layers, there was a semi-circular distribution. Large oil fields are located on the central bulge or anticline, most of which are located in oil-producing depressions, where there is oil supply in at least two directions; there is also a depression on a gentle slope due to the broad reservoir distribution. At present, the Zhongda oilfield in the Bozhong Depression is still small, worthy of attention in the future.