The rheologic model of three-phase foam drilling fluid can be optimized with grey correlation analysis method. 三相泡沫钻井液流变模式可通过灰色关联分析法进行优选。
Besides, it adopts gray correlation analysis method to evaluate quantificationally the competitiveness of such corporations. 采用灰色关联分析模型对石油工程技术服务企业竞争力进行了定量综合评价。