渤海海域潜山油气藏储层特征及其主控因素

Reservoir Characteristics and Main Controlling Factors of Buried Hill Reservoirs in Bohai Sea

渤海海域潜山油气藏50余年的勘探实践表明,储层特征及其成储条件是影响潜山构造能否成藏的关键因素。通过对渤海海域潜山油气藏储层特征研究,分析了影响和控制储层形成的主要因素。研究结果表明,渤海海域内潜山油气藏储层类型丰富,储集空间多样。岩性、构造运动、风化淋滤作用是影响储层物性的主控因素。其中潜山基岩的岩性在很大程度上决定了储集空间类型,而后期的构造运动和风化淋滤作用则对储层物性起着较大的改造作用。

Half a century of buried hill reservoirs practice in the Bohai Sea shows that reservoir characteristics and conditions are the key factors affecting the accumulation of buried hill structures.Based on the study of reservoir characteristics of buried hill reservoirs in the Bohai Sea,the main factors affecting and controlling reservoir formation are analyzed.The research shows the buried hill reservoirs in the Bohai Sea are rich in reservoir types and diverse in reservoir space.Lithology,tectonic movement and weathering leaching are the main controlling factors affecting reservoir physical properties.The lithology of the buried hill bedrock largely determines the type of reservoir space,while the later tectonic movement and weathering leaching play a major role in the transformation of reservoir properties.