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川南地区单裂缝系统有水气藏大多属于弱弹性水驱,水区规模较小,计算该类型气藏水侵量时,通常使用方法、条件不适合,相关气藏储层参数不易获得,其应用受到极大限制。在分析研究某典型裂缝性有水气藏多年气水产量数据后,应用不同方法估算气藏的水侵量,结合气藏生产实际,对比分析后认为,物质平衡法能够很好地适应该类裂缝系统,不仅可以估算各个时期的水侵量,而且可以估算水体规模,预测最大水侵量,对于指导该类气藏的后续生产规划具有现实意义。
Most water reservoirs in the single fracture system in southern Sichuan belong to weakly elastic water flooding and the size of water area is small. When calculating the water influx of this type of gas reservoirs, the commonly used methods are not suitable and the relevant reservoir parameters are not easily available. Applications have been greatly limited. After analyzing the data of multi-year annual gas and water production of a typical fractured gas reservoir, different methods are used to estimate the water influx of the gas reservoir. Combining with the actual production of gas reservoirs, comparative analysis shows that the material balance method can well adapt to this type of The fracture system not only can estimate the water influx in each period, but also can estimate the water body size and predict the maximum water influx, which is of practical significance for guiding the subsequent production planning of such gas reservoirs.