Natural Gas Properties: Ideal Gas and Real Gas

Play an AI-generated podcast conversation about this lesson

What is the standard volume of 1 lb-mol of an ideal gas at standard conditions?

372.4 scf
389.4 scf
392.4 scf
379.4 scf (correct)

What is the formula to calculate the specific volume of an ideal gas?

v = RT/PM
v = RT/M (correct)
v = PM/RT
v = M/RT

What is the unit of standard pressure?

atm
bar
psia (correct)
Pa

What is the formula to calculate the density of an ideal gas?

ρg = PM/RT (C) Signup and view all the answers

What is the unit of specific volume?

ft^3/lb (C) Signup and view all the answers

What is the assumption in calculating the properties of an ideal gas?

The gas behaves ideally (A) Signup and view all the answers

What is the typical atmospheric condition for measuring oil volume?

60°F and 14.7 psi (D) Signup and view all the answers

What is the result of the combustion reaction between methane and oxygen?

Production of carbon dioxide (CO2), water (H2O), and energy (A) Signup and view all the answers

Why is it challenging to establish a single set of specifications for natural gas?

Due to the varying composition of natural gas (A) Signup and view all the answers

How are the physical and chemical properties of natural gas determined?

By using the properties of individual components in the mixture (C) Signup and view all the answers

What is the unit of measurement for natural gas?

Standard cubic feet (SCF) (A) Signup and view all the answers

What is the shape of natural gas?

Shapeless and lighter than air (C) Signup and view all the answers

At what specific gravity range is the Lee-Gonzalez-Eakin method applicable for most natural gases?

less than 0.77 (C) Signup and view all the answers

What is the range of pressures used in the Lee-Gonzalez-Eakin correlation?

100 Signup and view all the answers

What is the maximum deviation of the viscosity values predicted by the Lee-Gonzalez-Eakin method?

8.99% (C) Signup and view all the answers

What is the unit of temperature used in the Lee-Gonzalez-Eakin correlation?

°F (C) Signup and view all the answers

What is the parameter besides reservoir temperature and molecular weight of the gas used in the Lee-Gonzalez-Eakin method?

Gas density (B) Signup and view all the answers

What is the primary assumption about the volume of molecules in an ideal gas?

The volume of molecules is insignificant compared to the total volume occupied by the gas. (C) Signup and view all the answers

What is the equation of state that describes the PVT behavior of gases?

′ 𝑝𝑉 = 𝑛𝑅 𝑇 (C) Signup and view all the answers

What is the term for the attractive or repulsive forces between molecules in an ideal gas?

No attractive or repulsive forces (A) Signup and view all the answers

What is the unit of measurement for the weight of gas in the equation 𝑚 𝑛= 𝑀?

Pounds (D) Signup and view all the answers

What are the standard conditions of temperature and pressure in natural gas calculations?

60°F and 14.7 psia (A) Signup and view all the answers

What is the term for the volume of gas occupied by 1 lb-mol of gas at standard conditions?

Standard volume (C) Signup and view all the answers

What is the unit of viscosity in which 1 poise is equal to 100?

centipoise (B) Signup and view all the answers

What are the factors that affect the viscosity of natural gas?

Temperature, pressure, and composition (A) Signup and view all the answers

What is the formula to calculate the viscosity of a natural gas mixture if the composition is known?

μg = σ μgi yi MWi / 1T2 (D) Signup and view all the answers

What is the minimum mole percent of nonhydrocarbon gases that requires corrections to pseudo-critical properties?

5 mole percent (C) Signup and view all the answers

What is the purpose of the Carr-Kobayashi-Burrows Correlation Method?

To calculate the viscosity of natural gas at one atmosphere (A) Signup and view all the answers

What are the two popular methods used to calculate the viscosity of natural gas?

Carr-Kobayashi-Burrows and Lee-Gonzalez-Eakin Methods (D) Signup and view all the answers