How does oil form or what is its source? How is oil collected? ?

How is it used to produce energy and what must happen for usable energy to be available? (both questions about oil)How does oil form or what is its source? How is oil collected? ?
Organic material (plants, algae, anything living) high in energy (ultimately from the sun) gets buried beneath sand, rock, and dirt. As time passes, more and more sediments build up on the organic material. Pressure increases. The heat builds up because of the warmth of the earth. Over time the molecules of these organic materials start to rearrange and form oil.





First the site with oil is drilled. Oil is then pumped steadily and carefully in order to maintain pressure in the well. It's processed in separators into the oil barrels we know and use.





Combustion (a burning reaction with which needs oxygen and an igniter) must occur to use this energy.How does oil form or what is its source? How is oil collected? ?
Oil is millions of years of collected decomposed algae. It would sink to the bottom of oceans and create vast deposits which became buried under dirt and rock. It is collect by drilling up to 9000 ft, sometime air or water must be pumped into the hole to create pressure and force the oil up. It is basically burned to produce energy.