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atyh | 4 months ago (raw) | export | reply | flag +5 
 Ruminating on the idea that “fossil fuels” don’t exist, and that phrase was created by Standard Oil to artificially propagate the idea of scarcity.
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AbstractEquilibrium | 4 months ago (raw) | root | parent | reply | flag 
 Lots of dead dinosaurs make up the hydrocarbon atmosphere on Venus.  No other explanation.
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Obaid Aldadi | 4 months ago (raw) | root | parent | reply | flag 
 Read about hydrocarbon field depletion, water cut in production, and hydrocarbon basin modeling. 

There's plenty of hydrocarbons in the subsurface, but not all of it are cheaply recoverable. You could have a billion barrels of oil in a certain "field, but the amount that you can recover at a low cost is only 30% of that. It gets exponentially more expensive to recover the remaining 70%,and it requires decades of research and advancements in " Enhanced oil recovery methods". 

These methods include water injection (using the difference in density between water and oil to push the oil upwards), surface pumps, steam injection, acidizing hydrocarbon reservoirs, utilizing surfactant and immulsifiers, and finally hydraulic fracturing or acid hydraulic fracturing. 

What else is out there/to be discovered? Only time will tell.