you need to get out and read some more, The russians have been saying for years and with great success, that OIL IS ABIOTIC and A Renewable Energy created by Compressed Minerals in the earths crust, It has absolutely Zilch to do with ALGAE, or FOSSILS.
I have read quite a bit on the subject as it is my job to find the stuff. It ain’t coming out of the mantle. 99% of all hydrocarbons can be typed back to source beds through geochemistry. Show me one oil or gas field that is not in a sedimentary basin. Zip, zilch, notta. Sounds like the Russians have to fight for grant money at the universities the same way the global warming crowd does in America. Elementary thermodynamics would tell you that at the pressures and temperatures that they are talking about, all that would be stable is elemental carbon. But if you want to round up some investors and drill a hole into the mantle, go right ahead. You will have to find a metallurgist to come up with something to use as a drill string as everything in use to date would melt before you got to the pot of black gold.
You might be interested in checking out the Zion Oil and Gas Company (ZN on the stock market, Zion.com on the internet). They are drilling in northern Israel on the basis of abiotic theory. So far, not much success, but they are optimistic. (Full disclosure: I’m a stockholder.)