Patent ID: 11959376
Assignee: HALLIBURTON ENERGY SERVICES, INC.
Field: Measurement (Instruments)
Classification: CPC E  G | IPC E  G

Claim 20:
21. The method of claim 12, wherein a time of arrival of a first ray is determined by the Quintero Wellbore Index using, tC
      1
    
    =
    
      
        
          2
          
            r
            ⁢
            
              
            
            ⁢
            1
          
        
        
          V
          
            m
            ⁢
            
              
            
            ⁢
            1
          
        
      
      +
      
        
          2
          
            wcsg
            ⁢
            
              
            
            ⁢
            1
          
        
        
          V
          
            csg
            ⁢
            
              
            
            ⁢
            1
          
        
      
      +
      
        
          2
          
            r
            ⁢
            
              
            
            ⁢
            2
          
        
        
          V
          
            m
            ⁢
            
              
            
            ⁢
            2
          
        
      
      +
      
        
          
            
              r
              3
              2
            
            +
            
              y
              3
              2
            
          
          2
        
        
          V
          
            m
            ⁢
            
              
            
            ⁢
            3
          
        
      
      +
      
        
          (
          
            S
            -
            
              2
              ⁢
              
                y
                3
              
            
          
          )
        
        
          V
          
            csg
            ⁢
            
              
            
            ⁢
            2
          
        
      
    
  
  ,, wherein tC1 is the time of arrival, r1 is a first radius, y is the first ray location on an x and y plane, S is a distance between the transmitter and the receiver, Vm1 is an acoustic compressional velocity of a first material, Vm2 is an acoustic compressional velocity of a second material, and Vm3 is an acoustic compressional velocity of a third material.