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针对中、低渗透油田,将产量自然递减率分解成含水上升因子和产液量自然递减率,研究推导出其相应关系公式制作出图版。利用图版分析产液量和含水对产量自然递减影响,确定主导因素,并剖析主导因素成因,采取针对性调整措施,减缓产量递减。该研究方法应用到PN一断块开发调整中取得了较好的效果,区块产量自然递减率减缓。
For medium and low permeability oilfields, the natural decline rate of production is decomposed into the rising factor of water content and the natural decline rate of production liquid volume, and the corresponding formulas are deduced to produce the charts. Analyze the influence of production volume and water content on the natural decline of production, and determine the dominant factors, analyze the causes of the leading factors, and take targeted adjustment measures to reduce the production decline. The research method has been applied to the PN block development and adjustment achieved good results, slow decline in the natural rate of decline of block production.