Petroleum oil, which is a fossil fuel, has come from rock oil.
The main origin of oil is small animals and plants. These
creatures, which lived in the sea, gradually covered by mud.
After million and millions of years, pressure and heat under
the sea turned these creatures to crude oil.
The origin of oil
Crude oil is a black-yellow liquid, which comes from beneath
the earth. To extract the oil, scientists with the help of
engineers study the area they think might be an oil reservoir.
They measure the soil under with special devices. If the
information gathered reveals a promising oil site, they begin
with drilling an oil well. The pipes are sent beneath the
earth to bring out the oil. Here we mention the name of five
big producing oil countries:
1-
Iran
2-
Russia
3-
United States
4-
China
5-
Saudi Arabia
The main oil producing states in the U.S.A are:
1-
Alaska
2-
Texas
3-
Louisiana
4-
Oklahoma
5-
California
The amount of oil produced In the U.S.A is gradually reducing.
Increasing demands forced the country to import oil from other
countries in order to meet the growing needs. More than 60
percent of crude oil consumed in U.S.A is imported from other
countries.
