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THE NATURE AND ORIGIN*text, HOW GAS FORMED, ORIGIN OF OIL, \, THEORY,…
THE NATURE AND ORIGIN
*text
• The oil we are using now was formed in the Carboniferous Era.
If the plankton and fish in the sea were left for about 150 million years,they would become oil in the future
fossil fuel are not the remain of dead dinosaur
• Most of fossil fuel we find today were formed millons of years before the first dinosaur
• Fossil fuels were formed from prehistoric plant and animals that live up to
Natural gas is a naturally occurring hydrocarbon gas mixture consisting primarily of methane, but commonly including varying amounts of other higher alkanes, and sometimes a small percentage of carbon dioxide, nitrogen, hydrogen sulfide, or helium.
It is formed when layers of decomposing plant and animal matter are exposed to intense heat and pressure under the surface of the Earth over millions of years.
The energy that the plants originally obtained from the sun is stored in the form of chemical bonds in the gas. Natural gas is a fossil fuel.
ORGANIC
1) ALLOCHTONOUS ( derived, derital)
= teresstial plant and animal debris
= from the spore and polen
= recycle kerogen from the sedimentary rock
2) AUTOCHOTONUS ( from the depositional environment)
= pytoplankton
INORGANIC
1) COSMIC ORIGIN
= Carboaceous chondrite and space
=hydrocarbon in igneous rock
=mantle degassing
= polymerisation of inorganic gases occur
INORGANIC THEORY
= This theory maintains that oil original from non biological or gas rising through the layers of the earth
= the metane were incorporated into mantlepolymerisation to form petroleum and coal
=it is accumulate as a natural gas
= it is digessing through zones of weak
ORGANIC THEORY
= According to this theory, oil is formed from fossilied plants and plankton
= different biological sources of organic matter
=organic compound deposited in sediment
=petroleum formed from the action of heat of kerogene
ORIGIN OF PETROLEUM
METAGENESEIS
-Source rock become more graphite
It is threshold of metamorphism
CATAGENESIS
It is up to 250 degree temperature
-when the temperature rise it show it have many layer
-at this stages, it exist from the source of rock more than 130 degree temperature
DIAGENESIS
-It is a normal temperature ( up to 50km)
-this stages start from the bacteria decay, oxidation and dehydartion
-it will produce kerogene
DIFFERENT BETWEEN OIL WINDOW AND GAS WINDOW
GAS WINDOW - range of gas can expend
OIL WINDOW - range of oil can expend
HOW GAS FORMED
ORIGIN OF OIL
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THEORY
