natural decline meaning in English

自然递减

Integrated with the correlation between natural and composite decline rates as well as the characteristic of production testing data , the model for natural decline rate is established
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。
The model can be used to analyze accurately the effect of individual interrelated factor on production decline rate , support regulative countermeasures and modify the natural decline rate in an oilfield
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。