Oil and Gas

Sometimes engineers, geoscientists, and other oil and gas industry folks have to write articles that will be read by a non-technical audience. In such situations, the writer has to be very careful in explaining even the simplest oil and gas terms, such as “oil” and “gas.”

To someone who does not work in our industry but does drive a car, “oil” means the 30W or synthetic liquid that goes into your car when you get an oil change, and “gas”
means the gasoline that you put into the gas tank to fuel you car. To us, however, “oil” means crude liquid petroleum, and “gas” means natural gas, a colorless vapor.

So it may be a good idea to define these simple terms at the beginning of the article; that way, the remainder of the article will make more sense to the general public.

Here are three more expressions that may require definition for the sake of clarity:
LNG – liquefied (not liquified) natural gas, mostly methane with a little ethane, cryogenically condensed natural gas in a liquid state at -260°F.
NGL – natural gas liquids, ethane, propane, and butanes that are removed from “dry” natural gas by cryogenics or absorption.
LPG – liquefied petroleum gas, mostly propanes and butanes, with a smidge of pentanes. It is a byproduct of natural gas processing, and it will evaporate at ambient pressure and temperature.

Funny Quote of the Day:

“You might be a redneck if… the blue book value of your truck goes up and down depending on how much gas it has in it.”
Jeff Foxworthy, comedian


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