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开展水淹层评价是实现M油藏增储上产的重要基础.然而,M油藏研究区套管测井和生产测井资料缺失.以含水率作为水淹特征的指标,综合开发地质特征和生产数据,统计表明:研究区水淹层分布与地层构造、沉积相、物性、重力和开发井网有关.为了实现水淹影响因素与测井评价资料的结合,提出基于地质因素约束的测井水淹层评价方法.方法以注采井组为单元,采用表征注采井间地质特征差异的参数(如地层构造差、产层渗透率差、井距和注见水时间差)和测井解释参数(如饱和度),通过数据统计分析,建立地质因素控制的水驱前缘到达时间、水淹层含水率变化速率的预测模型,实现现今水淹层及剩余油分布预测和解释.预测结果得到实际生产数据和油藏数值模拟结果的检验,显示本文提出的水淹层评价方法具有可行性,为水淹层研究提供了一定借鉴和参考.
However, the data of casing logging and production logging in the study area M are missing.With the water cut as the indicator of the flooding characteristics, the comprehensive evaluation of the geological characteristics And production data, statistics show that the distribution of water-flooded layer in the study area is related to the stratum structure, sedimentary facies, physical property, gravity and the development of well pattern.In order to realize the combination of influencing factors of flooding and well logging evaluation data, Well water flooded layer evaluation method.METHODS Based on the unit of injection-production well group, the parameters that characterize the difference of geologic characteristics between injection and production wells (such as the difference of formation structure, poor permeability of formation, well spacing and time difference of injection) and well logging Interpretation of parameters (such as saturation), through the statistical analysis of the data, establish the predicting model of the waterfront front arrival time controlled by geological factors and the rate of change of water cut-off rate of water-flooded layer to predict and explain the current waterflooded formation and remaining oil distribution. The results obtained by the actual production data and reservoir numerical simulation results show that the water flooded layer evaluation method proposed in this paper is feasible for the study of water flooded layer provides some reference and reference.