从产量递减率定义出发,首先导出了综合递减率与开井数、含水、产液厚度、压力、相对产液指数、井网密度、表皮系数等多因素分析模型。在此基础上,结合一般油田的生产测试数据特点和自然递减率与综合递减率的关系,建立了自然递减率多因素分析模型。该模型可准确地分析各相关因素对递减率的影响程度,从而为制定控制油田自然递减率的调整对策提供了依据。经油田实际应用,效果很好,值得推广应用。 Based on the definition of the rate of decline of production, a multi-factor analysis model of comprehensive decline rate, open well number, water cut, production liquid thickness, pressure, relative liquid production index, well density and skin coefficient was first derived. On this basis, combined with the characteristics of the production test data and the relationship between the natural decline rate and the comprehensive decline rate, the multi-factor analysis model of natural decline rate was established. The model can accurately analyze the impact of various factors on the rate of decline, thus providing a basis for the formulation of adjustment measures to control the natural rate of decline of the oil field. The actual application of the oil field, the effect is very good, it is worth promoting.