压裂井储层质量综合评价研究

压裂前对储层质量的优劣进行准确评价可以显著提高增产效果和经济效益。将储层质量分解为储集能力和流动能力两个要素，并将要素进一步细化为孔隙度、渗透率、含气饱和度等容易获取和量化的指标参数，建立了多层次的压裂井储层质量评价指标体系；并应用灰色关联分析方法获取各影响因素的重要程度和权重，然后结合模糊数学方法考虑各影响因素的综合作用，形成了多级模糊灰色关联分析的综合评判体系；通过上述处理后得到一个表征压裂井储层质量优劣的具体评分数值，根据该数值的大小即可对储层的优劣进行定量评价。现场应用表明，模糊综合评分越高，储层改造后产量越高，充分验证了本文提出的方法的准确性和可靠性。

A Study on Evaluation of Reservoir Quality of Fracturing Wells

Accurate evaluation and understanding of well quality before fracturing can improve production and profit significantly.This paper firstly divides the reservoir capacity into reservoir quality and flow capacity which fall further into elementsas porosity，permeability，gas saturation and other accessible and quantifiable indicating parameters. We establish a multi-levelquality evaluation index system of fracturing wells，which combines fuzzy comprehensive evaluation method with grey correlationanalysis theory，and presents a comprehensive evaluation method through multi-level fuzzy and grey correlation analysis.After multi-factor comprehensive evaluation，this paper gets a comprehensive evaluation index，which is used to evaluate thereservoir quality. Field application shows that the method is highly credible and accurate，and can quickly evaluate the qualityof fracturing wells.