Oil has biogenic markers in it in nearly all cases. (compounds originating in cell walls, for example) If the abiotic deposits are shown to exist, they are not at a globally significant amount.
If a well re-pools and produces again, it can be compared to a water well being pumped dry, then it refills from surrounding areas, which fracking, for instance accelerates.
So it is an interesting argument, but the evidence points away from much oil being created abiotically. Some could have originated from methane in comets, etc. but it would be devoid of biological markers.
I am not an expert in that part of geology, so I can't argue the point from a position of knowledge, only from internet articles and treatises. I do agree, however, that oil companies are generally greedy bastards, excluding hookrider.
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