论文部分内容阅读
河道砂体内部沉积结构韵律性变化和夹层的发育导致垂向上储层形成严重的非均质性,从而控制了注入水垂向上的波及体积和剩余油的分布。根据多口取心井及检查井资料,建立了各类河道砂体非均质模型,并采用检查井水洗剖面详细描述和数值模拟方法,研究了砂层内不同夹层分布及其韵律性变化所产生的非均质模型中剩余油分布规律,为该油田高含水开发后期进行井网综合调整及其剩余油挖潜提供基础。
The rhythmic change of sedimentary structure and the development of interlayer in the channel sand body lead to the formation of serious heterogeneity in the vertical reservoir, which controls the vertical volume of inflow and the distribution of residual oil. Based on the data of multi-well coring wells and inspection wells, various types of channel sand body heterogeneity models are established. The detailed description and numerical simulation of the well washing section are used to study the distribution of sand layers and their rhythmic changes The remaining oil distribution in the heterogeneity model produced provides a basis for comprehensive adjustment of well pattern and tapping potential of residual oil in the late stage of high water cut in the oilfield.