Study on Multi-parameters Discrimination Method for Flow Units

Key words: 
• flow units /
• discriminator function /
• multiparameters /
• heterogeneities /
• flowzone indicator /
• median grain diameter /
• Yan’an Formation

Abstract: Selecting discretion parameter is the key of multiparameters to identify flow units. Taking reservoir of fluvial facies in the area of Well L37 in Ordos basin as an example, utilizing SPSS statistical analysis software, through analyzing the discretions and their connection between six parameters of reservoirs, the discretion function of flow units has been established, the characters of flow units and heterogeneities of reservoirs have been investigated. There are four types of flow units and three kinds of intrastratal heterogeneities, the flow units ofⅠ,Ⅱ,Ⅲ,Ⅳ distributes in sedimentary microfacies of point bar, crevasse, natural levee. Different measures should be adopted according to the characters of reservoir heterogeneities.