The laws of thermodynamics do not apply here.
If you are the Lord God Almighty, you can suspend the laws of thermodynamics. If not, they are going to continue to exist and simple hydrocarbons will not form up into complex hydrocarbons in the presences of heat and pressure. They will however, do the opposite.
Under high temperature and pressure, carbon in the form of coal can phase shift into a diamond and still be carbon.
Yes, under heat and pressure, carbon can form four other bonds with adjacent carbon atoms in a crystaline structure. Under similar conditions we manufacture industrial diamonds today. Because we know and understand the process, we can reproduce it by first reaching pressure-temperature points above the Berman-Simon line on the phase diagram for carbon
Why can’t the same logic apply here?
Because carbon-to-carbon covalent bond in a crystaline structure are not the same types of bonding. However, because we understand how heat and pressure affect complex hydrocarbons, we use them to manufacture our fuels.
In a refinery, we use heat and pressure to BREAK DOWN complex hydrocarbons, usually in the presence of catalysts, to create smaller, more valuable hydrocarbons. In this way, we recover gasoline and diesel from heavier products left over from the initial distillation of crude oil.
High heat and high pressure chemically change metane into a carbon phase called oil
No, they don't.
and we just haven’t figured it out yet.
Yes we have. We use the process all over the world in refineries.
in a refinery the molecule chains are seperated according to their lengths according the amount of heat at that level in the cracking tower.
They don’t break down chemically they just seperate acording to heat applied
No, the distillation columns separate the different carbon strings into multiple products. The cracking process is "cracking" larger hydrocarbon molecules into smaller ones. Also reformers and cokers perform similar functions.
Please read through the following link for a overview of a refinery process.
Oil Market Basics, Refining
http://www.eia.doe.gov/pub/oil_gas/petroleum/analysis_publications/oil_market_basics/refining_text.htm
A primer on oil markets combined with hotlinks to oil price and volume data available on the Internet
Office of Oil and Gas, Energy Information Administration
