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产量递减目前研究状况主要侧重两方面:一是对产量递减规律的研究,二是对已开发区块历史数据的单因素分析.目前研究现状的不足之处在于未能给出各种影响因素的量化影响程度,并且不能对产量递减率进行预测.结合递减率定义和达西公式,建立了递减率与井网密度、注采井数比、流动系数、生产时间、生产压差、综合含水率、相对流动系数、供给半径、表皮系数等因素有关的多因素分析模型.该模型既能够分析各相关因素对产量递减的影响程度并给予量化,还可用于预测递减率的变化情况,有利于指导油田的实际生产工作.
Production decline The current research focuses on two aspects: First, the study on the law of decreasing production, the second is the single factor analysis of the historical data of the developed blocks.At present, the current status of the inadequacies of the failure to give a variety of influencing factors The degree of influence is quantified and the yield decline rate can not be predicted.Based on the definition of de-rating rate and Darcy’s formula, the relationship between rate of decline and well pattern density, well number ratio, flow coefficient, production time, production pressure difference, , The relative flow coefficient, the supply radius, the skin coefficient and other factors related to the multi-factor analysis model.The model can not only analyze the impact of the relevant factors on the yield decline and give quantification, but also can be used to predict the decline of the rate of change is conducive to the guidance The actual production of the oil field.