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对于注水开发油田而言,体积波及系数和驱替程度是重要的评价参数。以渤海湾盆地黄骅坳陷港东一区一断块明三油组和枣南孔一段枣1281断块为研究对象,采用油藏数值模拟研究、油藏工程计算和注采井网分析等方法,定量分析了研究区块注水体积波及系数与驱油效率及其在开发过程中的变化规律。指出在油田开发初期注水体积波及系数增长迅速,在开发后期增长缓慢,到高含水阶段后,宏观注水波及系数提高幅度不大,但水洗强度增加,使强水洗段厚度比例和驱油效率增大。认为需通过提高波及范围内的整体驱替程度来提高水驱采收率。该项研究对老油田开发后期调整具有一定的参考作用。
For waterflooding oilfields, volumetric wavefronts and displacements are important evaluation parameters. Taking the Ming3 oil group of a fault block and the Jujube 1281 fault block of Kongan-Dongzao area in the Huanghua Depression of Bohai Bay Basin as the research object, reservoir numerical simulation, reservoir engineering calculation and injection well pattern analysis , Quantitatively analyzed the water volume swept volume factor and flooding efficiency of the study block and its variation rules in the development process. It is pointed out that in the early stage of oilfield development, the wave volume expansion coefficient of water injection increases rapidly and increases slowly in the late stage of development. After the high water cut stage, the increase of water injection coefficient is not large, but the wash water intensity increases, . It is believed that water flooding recovery needs to be enhanced by increasing the overall flooding within the reach. This study has some reference to the late adjustment of old oilfield development.