"It goes without saying that when assaying Middle Eastern oil reserves, one should tread carefully. Because, on the one hand, oil reserves' estimation is both a science and an art; and on the other hand, seen from the point of view of most Middle Eastern countries, oil reserves are more political than geological. Thus, nonscientific views come to prime over science and further enhance the various types of shades that have led to an overall opaque situation in the Middle East."..."As for Iran, the usually accepted official 132 billion barrels is almost 100 billion barrels over any realistic assay. If the higher figure was for real, its oil industry would not be struggling day in and day out to keep output at between 3.0-3.5 million barrels per day (inclusive of Persian Gulf offshore)"