12
Prof.Riggs
Carbon
Atom
Hydrogen
Atom
Hydrogen
Atom
Chapter 1
Oil Basics
WHAT IS PETROLEUM?
The word ‘petroleum’ is derived from the Latin petra (which means
rock) and oleum (which means oil). It is commonly used to refer to
crude oil, but it may also refer to other related hydrocarbons.
Some hydrocarbons are gaseous, rather than liquid. Methane
is the most common example of these hydrocarbon gases.
This is the kind of natural gas that we most often use
in our kitchens at home.
What is
crude oil?
Crude oil
is an organic liquid substance often
found below the Earth’s surface. It is made up
of thousands of molecules composed of different
hydrogen and carbon atoms. Such compounds are
called
hydrocarbons
.
These hydrocarbons also contain
different proportions of impurities like
oxygen, sulphur, nitrogen and heavy
metal atoms.
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