在系统描述葡萄花油田北部鞍部地区断裂体系及分布特征的基础上,将影响断层封闭性的主要因素,即断层两盘的岩性对置关系、泥岩涂抹系数、断层带内泥质含量作为评价参数,结合盆地构造演化,综合分析了鞍部地区断块边界断层的封闭性演化史,同时还分析了它们对油气运移和聚集的作用,为葡萄花油田油气成藏机理研究和断层圈闭评价提供了依据。 Based on the systematic description of the fault system and its distribution in the northern saddle area of ​​Putaohua oilfield, the main factors that influence the sealing of the fault, namely, the lithology relationship of two plates in the fault, the smear coefficient of mudstone and the mud content in the fault zone, are evaluated Based on the tectonic evolution of the basin, the evolutionary history of block faults along the fault block in the saddle area was analyzed. The effects of these parameters on hydrocarbon migration and accumulation were also analyzed, which provided theoretical basis for hydrocarbon accumulation mechanism and fault trap evaluation in Putaohua oilfield Provided the basis.