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针对枣南地区孔一段油藏的地质特点和生产现状,利用油水界面法对断层原始封堵性进行评价,用物质平衡法对区块封堵性进行评价,然后用失踪剂法、现场验证法等方法对单个断层开发后期封堵性进行评价研究。研究认为该地区油藏19条断层有3条原始开启,4条在开发后期开启,是造成注水开发效果不好和套变的重要原因。在采取内部调整注采关系,转采、停注,动态调注等系列针对措施以后,区块产油量增加,无效注水减少,开发效果得到了提高。
According to the geological characteristics and production status of the first member of Kongzao area in Zaonan area, the original plugging property of the fault was evaluated by oil-water interface method, and the block sealing property was evaluated by material balance method. Then, And other methods to evaluate the sealing of a single fault late stage. It is considered that three of the 19 faults in the area were originally opened and four of them were opened in the late stage of development. This is the main reason for the poor water injection and casing deformation. In the series of measures such as internal adjustment of injection-mining relations, transfer of mining, stop-gap injection and dynamic adjustment of interest rates, the oil production in the block increased, the amount of invalid water injection decreased, and the development effect was enhanced.