Patent ID: 11860137
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 2:
3. The method as set forth in claim 1, further comprising:
analyzing the tagged oil-based drilling fluid using gas chromatography-mass spectroscopy, resulting in a peak area corresponding to hydrocarbon compounds and a peak area corresponding to the synthetic chemical standard; and
determining a concentration of each individual hydrocarbon compound in parts per million according to the following:, HC
    ⁢
       
    concentration
   
   =
   
    
     
      H
      ⁢
      C
      ⁢
      a
     
     
      S
      ⁢
      T
      ⁢
      a
     
    
    ×
    STc
    ×
    F
   
  
  ,, where HCa denotes the peak area corresponding to hydrocarbon compounds, STa denotes the peak area corresponding to the synthetic chemical standard, STc denotes the known concentration of the synthetic chemical standard, and F denotes an instrument response factor.