Patent ID: 11912932
Assignee: CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  Y | IPC C  E

Claim 1:
2. The encapsulated polymer flooding method for enhancing oil recovery according to claim 1, wherein a criterion for determining the particle size is represented by formula (I):, d
     =
     
      a
      ⁢
      τ
      ⁢
      
       
        
         8
         ⁢
         k
        
        ϕ
       
      
     
    
   
   
    
     (
     I
     )
    
   
  
 

wherein, d is the particle size of the encapsulated polymer, a is a coefficient with a value range of 0.1-5, τ is tortuosity of the near-wellbore targeted profile control area, k is average permeability of the near-wellbore targeted profile control area, and ϕ is porosity of the near-wellbore targeted profile control area.