Origin of Natural Gas|
we refer to the word "gas," our present-day use of the word is often
confusing. Gas is one of the three states of matter, as opposed to solids and
liquids. While we often use the word "gas" to refer to gasoline, our
vehicular fuel, this is technically incorrect because gasoline is a liquid and
not a gas.
the gas industry uses the word "gas," it can also be confusing because
members of the American Gas Association generally mean either natural gas, which
is truly in a gaseous state, or propane gas, which is also known as liquid petroleum
gas is lighter than air, colorless, odorless and tasteless. For this reason, odorant
is added to the gas to make it noticeable and objectionable for safety reasons.
Natural gas can be compressed and, therefore, transmitted in large quantities
through relatively small pipe diameters when under high pressure.
gas is primarily composed of methane, although also present are other chemicals
such as propane, butane, isobutane, pentane and heptane.
BTU Content Varies:
origin of natural gas and oil has been debated by geologists and chemists for
a long time. The most generally accepted theory is that natural gas has been formed
by a chemical action in the earth that involved the marine organisms that were
buried in the sands of what was then the seashore.
the ages passed, these sands settled very slowly and were overlaid with sediments
that become hundreds of feet deep. As this overburden increased, the resulting
pressure and heat solidified some of the sand and other materials into rock formations.
the ages, some of these areas become raised again and then settled under water
again, where another layer of marine organisms resulted in another layer of gas
sand. These alternate risings and submersions were repeated several times over
millions of years, as evidenced by the gas and oil deposits at various depths
in the same drilling area.
theory answers many questions, namely the fact that gas and oil are only found
under a small portion of the earth. While there are other theories, this one seems
to be the most widely accepted.
Facts About Natural Gas:
range 5% to 15%
color, odor or taste
is added for odor
with a blue flame
at - 200 °F
Value 800 to 1200 BTU's per cubic foot