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博兴洼陷位于东营凹陷的西南斜坡带,沙四段滩坝型油气资源丰富。滩坝砂中坝砂物性较好,是油气储集的良好场所,但是分布范围比较局限。本文通过对博兴洼陷已经钻遇的滩坝砂油藏进行储层沉积特征、圈闭成藏条件分析,确定沉积物源、水动力条件、沉积旋回、古地形条件为滩坝砂岩沉积主控因素,沙四上亚段油源、滩坝储层、断裂输导以及地层异常高压等因素控制了工区内滩坝砂岩的油气富集。
Boxing depression depression is located in the southwestern slope of Dongying depression, Sha 4 section of dam-type oil and gas rich in resources. Bar dam sand sand physical properties better, is a good place for oil and gas reservoirs, but the distribution is more limited. Based on the analysis of reservoir sedimentary characteristics and trap accumulation conditions in the beach-bar sand reservoir that has been encountered in the Boxing depression, sedimentary source and hydrodynamic conditions and sedimentary cycles are determined, and the palaeoclimatic conditions are as follows: Control factors, upper Es4 oil source, beach and dam reservoirs, faults and the formation of abnormal pressure and other high-pressure formation control beach dam sandstone oil and gas enrichment.