Patent ID: 11873712
Assignee: CHINA UNIVERSITY OF PETROLEUM—BEIJING
Field: Measurement (Instruments)
Classification: CPC E  G | IPC E  G

Claim 8:
9. The non-transitory computer-readable storage medium according to claim 8, wherein the processor is further enabled to:
calculate the initial gas pressure by substituting the actual recovery of the natural gas, a volume of the first intermediate container, an actual formation pressure corresponding to a water breakthrough of a gas reservoir, the initial formation pressure, a first gas deviation factor corresponding to the initial gas pressure, a second gas deviation factor corresponding to the actual formation pressure, a third gas deviation factor corresponding to the initial formation pressure, and a pore volume of the core into a formula, the formula being expressed as:, P
   g
  
  =
  
   
    
     iV
     s
    
    ⁢
    
     Z
     g
    
   
   
    
     V
     g
    
    (
    
     
      
       Z
       1
      
      
       P
       1
      
     
     -
     
      
       Z
       2
      
      
       P
       
        2
         
       
      
     
    
    )
   
  
 

wherein Pg is the initial gas pressure, i is the actual recovery of the natural gas, Vs is the pore volume of the core, Zg is the first gas deviation factor, Vg is the volume of the first intermediate container, Z1 is the second gas deviation factor, Z2 is the third gas deviation factor, P1 is the actual formation pressure, and P2 is the initial formation pressure.