基于三标度法的层次分析法在储层分类评价中的应用

Application of AHP Based on Three-Degree Method in the Evaluation of Reservoir Classification

以东部某油田区块为例,介绍基于三标度法的层次分析法的基本思路,优选孔隙度、渗透率、含水饱和度等相关评价指标,对部分关键井的小层进行储层综合定量评价。该方法在应用中表现出以下优势:可以使决策者的主观判断及客观推理紧密联系,储层分类更加合理;油田实际勘探开发与分类结果方向一致,吻合度高。此次评价过程中引入沉积微相指标,作为储层定性评价的参考指标。

The paper introduced the basic idea of the AHP based on three scales method. By taking an oilfield block in eastern China as an example,we selected porosity,permeability,water saturation and so on as evaluation indexes to classify some part of substrata of some part of key wells in the block. The results showed that： firstly,the method closely linked the subjective judgment and objective reasoning of decision maker,which made the reservoir classification more reasonable; and the classification result is highly consistent with that of onsite well production.Secondly,we tried to add sedimentary micro- facies which is qualitative index in the evaluation process so that the sedimentary micro- facies can play a role in reservoir evaluation.