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油气藏生产递减曲线和水驱特征曲线的研究与分析,是研究油气藏极为广泛应用的一种方法。自1945年Arps总结出经典生产递减规律以来,人们一直在深入研究生产递减的各种规律,并取得了一定的成果,但是相关领域人士仍希望通过一种相对直观、简便的方法来对油田产量和最终采收率进行预测。文章结合国内外研究成果,针对注水开发油藏的特性,给出了相关生产递减分析的基本过程和步骤。最后应用该方法对实际油井进行产能预测,预测结果与现场生产数据吻合较好,验证了该产能分析方法的正确性。
The study and analysis of the production decline curve and the water drive curve of oil and gas reservoirs are one of the most widely used methods for studying oil and gas reservoirs. Since Arps summed up the law of diminishing classical production in 1945, people have been studying the various laws of decreasing production in depth and have achieved some results. However, people in related fields still hope that the output of oil fields can be reduced by a relatively straightforward and convenient method And the final recovery rate prediction. Combining with the research results at home and abroad, this paper gives the basic process and steps of decreasing production analysis for the characteristics of waterflooding reservoirs. Finally, this method is used to predict the actual production capacity of oil well. The predicted result is in good agreement with the on-site production data, which proves the correctness of this method.