Petroleum
or crude oil is a naturally occurring liquid found
in formations in the Earth consisting of a complex
mixture of hydrocarbons (mostly alkanes) of various
lengths. Petroleum literally means rock oil; oil
that comes from rock. Petroleum or Crude Oil is a
naturally occurring hydrocarbon-based liquid which
is sometimes present in porous rocks beneath the
earth's surface. Petroleum is formed by the slow
alteration of organic remains over time. It consists
of a mixture of liquid hydrocarbon compounds and
varies widely in composition, color, density, and
viscosity.
This liquid after distillation yields
a range of combustible fuels, petrochemicals, and
lubricants. Compounds and mixtures of compounds separated
from crude petroleum by distillation include gasoline,
diesel fuel, kerosene, fuel oil, some types of alcohol,
benzene, heavy naphtha, different grades of lubricating
oils and residuum. Petroleum is usually classified
according to the predominance of paraffin or asphalted
compounds and accordingly is said to have a paraffin
base, an intermediate base, or an asphalt base.
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Oil
wells are drilled as deep as six miles into the Earth
to search for petroleum. These wells can
cost millions of dollars to drill, yet drilling is
done because petroleum is a valuable natural resource.
Although the major use of petroleum is as a fuel
(gasoline, jet fuel, heating oil) and petroleum and
natural gas are often used to generate electricity,
there are many other uses as well.
Here are some of
the ways petroleum is used in our every day lives.
All plastic is made from petroleum
and plastic is used almost everywhere, in cars, houses,
toys, computers and clothing. Asphalt used in road
construction is a petroleum product as is the synthetic
rubber in the tires. Paraffin wax comes from petroleum,
as do fertilizers, pesticides, herbicides, detergents,
phonograph records, photographic film, furniture,
packaging materials, surfboards, paints and artificial
fibers used in clothing, upholstery, and carpet backing.
Helium, sulfur and other valuable materials are produced
from oil wells along with petroleum itself. Petroleum
is used principally as a source of fuel and lubricating
oils. Only when these supplies are restricted or
threatened does the average person begin to realize
their importance.
The top three oil producing countries
are Saudi Arabia, Russia, and the United States.
About 80%
of the world's readily accessible reserves are located
in the Middle East, with 62.5% coming from the five
Arab countries: Saudi Arabia (12.5%), U.A.E., Iraq,
Qatar and Kuwait. Millions of people around the world
are employed to find or produce petroleum, ship and
refine it and manufacture and market the many oils
and waxes made from it.
Although there are many alternatives
to petroleum fuels, an analysis of costs and benefits
shows that
petroleum is superior in most every area. Hydrogen,
ethanol, hybrid, and biomass technologies are promising
for automobiles and may soon increase efficiency
and reduce emissions; but many of these technologies
have not yet proven sufficiently profitable to providers
or attractive to consumers. Petroleum retains a key
advantage because the price of oil remains low compared
to forms of energy with lower environmental impacts,
like wind and solar power. Unlike hydrogen or even
natural gas, oil is easily transportable and there
is a vast infrastructure in place to support its
use.
There are many factors due to which oil prices
are rising but still petroleum is a necessity. These
reasons are lack of available capacity across the
oil supply chain in production, refinery upgrading
and transportation infrastructure; surging demand
in emerging economies; apparent insensitivity of
consumers to the price signal; uncertainties related
to the weather (hurricanes) or to politics (Iran,
Iraq, Venezuela, Nigeria); and increasing activity
in the commodities markets. It is not very useful
to blame any single player in the game. This could
pose danger to the economy and business of the world.
Therefore,
benefits of petroleum have brought enumerable benefits
to human civilization: quality of life,
dynamic prosperity and a source of income to energy
traders.
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