A little more:
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http://www.the7thfire.com/Politics%20and%20History/peak_oil/is_peak_oil_a_myth.htm
There have been numerous reports in recent times, of oil and gas fields not running out at the expected time, but instead showing a higher content of hydrocarbons after they had already produced more than the initially estimated amount. This has been seen in the Middle East, in the deep gas wells of Oklahoma, on the Gulf of Mexico coast, and in other places. It is this apparent refilling during production that has been responsible for the series of gross underestimate of reserves that have been published time and again, the most memorable being the one in the early seventies that firmly predicted the end of oil and gas globally by 1987, a prediction which produced an energy crisis and with that a huge shift in the wealth of nations. Refilling is an item of the greatest economic significance, and also a key to understanding what the sources of all this petroleum had been. It is also of practical engineering importance, since we may be able to exercise some control over the refilling process.
The debate about the origin of all the petroleum on Earth lies in the center of the subject. If we really knew that it is only biological materials, which, in their decay, could produce hydrocarbons, then the quantities that could ever be produced would be limited by the biological content of the sediments. But then the clear and strong association of petroleum with the inert gas helium would have no explanation; the finding of hydrocarbon gases, liquids and solids on most other planetary bodies in our solar system which have surface conditions quite unsuitable for surface life, could not be understood; the presence of hydrocarbons which we now find in abundance in basement rocks would also remained unexplained.
I first read about this in 1991. The geologist who pioneered the theory was far more accurate in picking where oil deposits would be based upon his assumptions than fossil-fuel experts were.
Back then I thought for sure it would only be a matter of a few years before we started looking at the fuel situation differently. Unfortunately, we didn't then, we won't now. The idea of a dwindling resource is too vital to modern angst and the deep running anti-capitalism sentiment that has permeated our popular culture and academic institutions.
Of course, even if they have an inorganic origin, oil and gas might not be renewable at the rate we are currently using them.
Also, if they were organic, than they ARE renewable, because organic material is growing and dying all the time, it again would simply be a question of how quickly they renew.