关键词: 特高含水期, 流线分布, 两相渗流, 源汇, 非均质, 吸水剖面, 产液剖面, 剩余油

Abstract: The vertical and horizontal heterogeneity of the reservoir in Bohai Q oilfield is strong, so it is difficult to accurately establish the geological model, and there is a problem of low fitting accuracy in the history of reservoir numerical simulation in ultra⁃high water cut period. Based on the theory of percolation mechanics, production logging data and streamline simulation are combined. The combination of the pipe method and the use of production log data to provide the amount of liquid production and water content and stratified injection amount to determine the residual oil saturation and its distribution at any point in the reservoir. By using this method, the measures of flow field regulation of water injection unit and water blockage of local well group are proposed. The output of oil wells is increased by 14 times, and the annual oil production of oilfield is negatively decreasing. The practice shows that the combination of production logging data and streamline simulation can effectively identify the remaining oil distribution, and provide scientific theoretical basis for the development and adjustment of highly heterogeneous reservoirs in ultra⁃high water cut stage.

Key words: Extra high water cut period, Streamline distribution, Two?phase seepage, Source?sink, Strong heterogeneous reservoir, Water absorption profile, Liquid production profile, Remaining oil