海拉尔盆地布达特潜山裂缝性油藏油水层识别方法

摘要：布达特潜山油藏属于基岩浅变质裂缝性油藏，具有双重孔隙介质的储集空间类型，含油饱和度由基质孔隙含油饱和度和裂缝孔隙含油饱和度两部分组成。通过油气成藏过程的毛细管压力平衡理论，建立油藏高度与基质孔隙度函数关系，求取基质孔隙含油饱和度；并利用裂缝含油饱和度测定的经验参数，计算出潜山油藏双重孔隙介质储层的总含油饱和度；通过对工区不同断块生产井试油、试采及初期产液性质与相应射孔层段的测井响应特征统计与对比分析，依据测井曲线计算储层基质孔隙度、裂缝孔隙度以及储层的总含油饱和度，并分别与电阻率曲线参数进行交会，建立不同断块油水层解释图版，并划定油层、水层、油水同层的解释标准；将工区各井油水层解释结果应用于油藏生产动态和油水界面系统分析，将布达特潜山油藏划分为四个油水系统，每个油水系统内部均表现出具有统一的油水界面，与油藏地质特点及储集层类型具有很好的一致性，应用效果好，对潜山油藏开发和方案调整具有指导作用。

Identification of oil and water layers in Budate fractured buried hill reservoir,the Hailar Basin

Budate buried hill reservoir is a epimetamorphosed fractured basement reservoir with dual porosity. Both matrix porosity and fracture porosity contribute to its oil saturation.The theory of capillary pressure balance in the process of hydrocarbon accumulation is used to establish the functional relationship between oil column height and matrix porosity for calculating oil saturation in matrix porosity.The total oil saturation of buried hill reservoir with dual porosity can be calculated by using the empiric...