Natural Gas Properties

 November 29, 2021

The project aims to calculate how natural gas properties, such as density (lbm/ft3), viscosity (cp), formation volume factor (rcf/scf), compressibility (1/psia), and the pseudo-pressure (psi2/cp) of gas along wellbore changes according to the pressure and temperature. It is a special assignment of my Natural Gas Engineering course. Then, I created an input field to insert several properties, these are:

- Total Gas Gravity

-Nitrogen Mole Fraction 

-Carbon dioxide Mole Fraction

-Hydrogen Sulphide Mole Fraction

-Wellhead Pressure, psi

-Bottomhole Pressure, psi

-Wellhead Temperature, F

-Bottomhole Temperature, F

-Depth of Wellbore, ft


In addition, the input properties above were chosen as default values from the input field. After the inputs are inserted, the graphs of properties versus pressure and temperature, respectively:

-Density (lbm/ft3) vs Pressure,  Density (lbm/ft3) vs Temperature

-Viscosity (cp) vs Pressure, Viscosity (cp) vs Temperature

-Formation Volume Factor (rcf/scf) vs Pressure, Formation Volume Factor (rcf/scf)  vs Temperature

-Compressibility (1/psia) vs Pressure, Compressibility (1/psia) vs Temperature

-Pseudo-Pressure (psi2/cp) vs Pressure, Pseudo-Pressure (psi2/cp)  vs Temperature


Example figures are still in the improvement section and are shown below.

                                            
                                                                Figure 1: Input Field


Figure 2: Density Graph

Figure 3: Viscosity Graph

Figure 4: Formation Volum Factor Graph

Figure 5: Compressibility Graph

Figure 6: Pseudo-Pressure Graph










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