Gas Properties and Calculations

The video tutorial on Engman YouTube channel continues a Q&A session focusing on gas gravity. It presents a case study of a gas well producing gas with a specific gravity of 0.65 at a rate of 1.1 MMSCF per day. The tutorial guides viewers through calculating the apparent molecular weight, gas density, and mass flow rate in pounds per day. It provides formulas and step-by-step instructions for each calculation, emphasizing the importance of unit conversion and the use of the universal gas constant. The video concludes with a summary of the results and a thank you to viewers.

What is the specific gravity of the gas mentioned in the video?

• 0.95

• 0.75

• 0.65

• 0.85

How is the apparent molecular weight of the gas calculated?

• By adding the specific gravity to the molecular weight of air

• By multiplying the specific gravity by the molecular weight of air

• By subtracting the specific gravity from the molecular weight of air

• By dividing the specific gravity by the molecular weight of air

What is the molecular weight of air used in the calculation?

• 29.00

• 32.00

• 18.82

• 28.96

What is the formula used to convert temperature from Fahrenheit to Rankine?

• Fahrenheit + 273

• Fahrenheit + 460

• Fahrenheit + 32

• Fahrenheit + 100

What is the unit of the universal gas constant R used in the video?

• psi a cubic foot per gram mole per Rankine

• psi a cubic meter per pound mole per Rankine

• psi a cubic foot per pound mole per Rankine

• psi a cubic foot per pound mole per Kelvin

What is the value of the universal gas constant R used in the calculations?

• 9.81

• 10.7

• 8.314

• 10.73

How many standard cubic feet does one pound mole of any gas occupy?

• 400.0

• 379.4

• 379.0

• 350.0

What is the mass flow rate of the gas in pounds per day?

• 54,576.7

• 54,577

• 50,000

• 55,000

What is the apparent molecular weight of the gas in gram per mole?

• 25.00

• 18.82

• 28.96

• 20.00

What is the gas density calculated in the video?

• 4.31 pound per cubic foot

• 5.00 pound per cubic foot

• 3.50 pound per cubic foot

• 4.00 pound per cubic foot