Petrol station hun....!
2007-07-23 03:22:30
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answer #1
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answered by Maria S © 7
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They are the refined products of crude oil, a black sludge which is collected in cavities under the ground. It is formed by millions of years of fossil,plant and mineral materials being trapped beneath the layers of rock, earth and vegetable matter. Eventually the underground pressure builds up and the black oil bursts through from under ground and will continue to gush from the sub-terrain, until it is `capped` to control it. After that it goes to the refineries to be turned into the fuel we know as petrol and diesel.
2007-07-23 03:35:32
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answer #2
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answered by Social Science Lady 7
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Its fractionally distilled from crude oil which is deep in the earths crust, created from dead plants and animal remains covered in sediment and put under extreme heat & pressure for millions of years as its forced futher and futher into the earths crust.
By the way unless new reserves are discovered its predicted we will run out in the next 20 - 30 years!
2007-07-26 23:25:16
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answer #3
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answered by Anonymous
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These and many other products are refined out of crude oil. That is what is pumped from the ground. Crude oil is the result of many centuries of organic matter being buried under ground in the right conditions. That is why it is refered to as "fossil fuel".
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2007-07-23 03:26:35
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answer #4
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answered by Jacob W 7
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From Crude Oil.
2007-07-23 03:22:38
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answer #5
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answered by deeps 2
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it originates from crude oil, found in the ground. then it is refined and factionated, then petrol, and other fuels, like diesel, kerosene, and metane are manufatured.
these are then transported to the staions, like BP, and sheel, and then the consumer puts them in their cars.
then this fuel is burned to release energy, and CO2 or CO if incompletely combusted!
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2007-07-23 03:47:37
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answer #6
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answered by Klick 5
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A type of oil called Light Sweet Crude. It's called that for its low sulfur content.
2007-07-23 03:23:11
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answer #7
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answered by Harbinger 6
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It's derived from crude oil.
2007-07-23 03:23:42
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answer #8
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answered by barbwire 7
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Most geologists view crude oil and natural gas as the product of compression and heating of ancient organic materials over geological time. According to this theory, oil is formed from the preserved remains of prehistoric zooplankton and algae which have been settled to the sea (or lake) bottom in large quantities under anoxic conditions. Terrestrial plants, on the other hand, tend to form coal. Over geological time this organic matter, mixed with mud, is buried under heavy layers of sediment. The resulting high levels of heat and pressure cause the organic matter to chemically change during diagenesis, first into a waxy material known as kerogen which is found in various oil shales around the world, and then with more heat into liquid and gaseous hydrocarbons in a process known as catagenesis. Because most hydrocarbons are lighter than rock or water, these sometimes migrate upward through adjacent rock layers until they become trapped beneath impermeable rocks, within porous rocks called reservoirs. Concentration of hydrocarbons in a trap forms an oil field, from which the liquid can be extracted by drilling and pumping. Geologists often refer to an "oil window" which is the temperature range that oil forms in—below the minimum temperature oil remains trapped in the form of kerogen, and above the maximum temperature the oil is converted to natural gas through the process of thermal cracking. Though this happens at different depths in different locations around the world, a 'typical' depth for the oil window might be 4–6 km. Note that even if oil is formed at extreme depths, it may be trapped at much shallower depths, even if it is not formed there (the Athabasca Oil Sands is one example). Three conditions must be present for oil reservoirs to form: first, a source rock rich in organic material buried deep enough for subterranean heat to cook it into oil; second, a porous and permeable reservoir rock for it to accumulate in; and last a cap rock (seal) that prevents it from escaping to the surface.
The vast majority of oil that has been produced by the earth has long ago escaped to the surface and been biodegraded by oil-eating bacteria. Oil companies are looking for the small fraction that has been trapped by this rare combination of circumstances. Oil sands are reservoirs of partially biodegraded oil still in the process of escaping, but contain so much migrating oil that, although most of it has escaped, vast amounts are still present - more than can be found in conventional oil reservoirs. On the other hand, oil shales are source rocks that have never been buried deep enough to convert their trapped kerogen into oil.
The reactions that produce oil and natural gas are often modeled as first order breakdown reactions, where kerogen is broken down to oil and natural gas by a set of parallel reactions, and oil eventually breaks down to natural gas by another set of reactions. The first set was originally patented in 1694 under British Crown Patent No. 330 covering,
"a way to extract and make great quantityes of pitch, tarr, and oyle out of a sort of stone."
The latter set is regularly used in petrochemical plants and oil refineries.
Diesel is produced from petroleum, and is sometimes called petrodiesel when there is a need to distinguish it from diesel obtained from other sources such as biodiesel. It is a hydrocarbon mixture, obtained in the fractional distillation of crude oil between 200 °C and 350 °C at atmospheric pressure.
The density of diesel is about 850 grams per liter whereas gasoline (British English: petrol) has a density of about 720 g/L, about 15% less. When burnt, diesel typically releases about 40.9 megajoules (MJ) per liter, whereas gasoline releases 34.8 MJ/L, about 15% less. Diesel is generally simpler to refine than gasoline and often costs less (although price fluctuations sometimes mean that the inverse is true; for example, the cost of diesel traditionally rises during colder months as demand for heating oil, which is refined much the same way, rises). Also, due to its high level of pollutants, diesel fuel must undergo additional filtration which contributes to a sometimes higher cost. In many parts of the United States and throughout the the whole of the UK, diesel is higher priced than gasoline.[1] Reasons for higher priced diesel include the shutdown of some refineries in the Gulf of Mexico, and the switch to ULSD, which causes infrastructure complications.
2007-07-23 03:29:25
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answer #9
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answered by anjee 4
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Oil, that's why everyone is willing to go to war over it
2007-07-23 03:23:40
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answer #10
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answered by icam62 3
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