If oil and gas production is an abiogenic process, that does not make it renewable. After all, the amount of carbon is finite and, presumably, the process of transforming inorganic carbon to the desired organic form is slow.
Well then what is renewable? The heat from the sun is generally thought to be renewable but as you say, it will one day flicker and become a red gas giant and then shrink . No more heat as it finally does. So is solar energy renewable. By your definition it is not either. The abiogenic theory says that oil has be
en made and is imminantly finite. That is not true. The abiogenic theory sees oil creation as a geological process which is ongoing and even though the process is measurable perhaps in eons, the fact is that these geological processes are still ongoing , much the same way that plate tectonics and weathering of rocks, and glaciation are ongoing processes.
We just don't know what the process is. Certainly Titan's Methane shows us that there is an abiogenic geologic process which produces hydocarbons. It is no great leap to postulate that a similar process might exist as a common form of geologic planetary process producing heavier hydrocarbons, such as oil.This is waht is fueling all of the gas on these postings: a new possible paradigm.
There may be many of these we don't know about. Abraham struck a rock and wine poured out. That may mean that the grapevines of Alsace/ Lorraine are in for some serious competition?