Crude Oil Vapor Pressure Calculator

Crude Oil Vapor Pressure at Various Temperatures

Below is a table that summarizes the typical vapor pressures of crude oil at various temperatures. Crude oils can vary widely based on their chemical composition, but the following table is a general guideline:

Crude Oil Type	Temperature (°C)	Vapor Pressure (kPa)	Vapor Pressure (psi)	Comments
Light Crude Oil	20°C (68°F)	80-120 kPa	11.6-17.4 psi	High volatility, often contains light hydrocarbons like methane, ethane.
	40°C (104°F)	150-200 kPa	21.8-29.0 psi	Can be more volatile under warm conditions.
	60°C (140°F)	250-350 kPa	36.3-50.8 psi	Substantial vapor formation at higher temperatures.
Medium Crude Oil	20°C (68°F)	30-50 kPa	4.4-7.3 psi	Contains a balance of lighter and heavier hydrocarbons.
	40°C (104°F)	70-100 kPa	10.1-14.5 psi	Higher temperatures lead to more vapor pressure.
	60°C (140°F)	120-170 kPa	17.4-24.6 psi	Vapor pressure still moderate, but rises with temperature.
Heavy Crude Oil	20°C (68°F)	10-20 kPa	1.5-2.9 psi	Low volatility; contains more heavy hydrocarbons and fewer volatile components.
	40°C (104°F)	20-40 kPa	2.9-5.8 psi	Minimal vaporization, even under moderate heat.
	60°C (140°F)	40-70 kPa	5.8-10.1 psi	Limited vapor formation despite increased temperature.
Condensate (Ultra-Light)	20°C (68°F)	200-400 kPa	29-58 psi	Extremely volatile, similar to natural gas liquids.
	40°C (104°F)	400-600 kPa	58-87 psi	Can form substantial vapor even at room temperature.
	60°C (140°F)	600-1000 kPa	87-145 psi	High risk of vapor pressure increase at elevated temperatures.