So, will these new SEC rules prevent fraud in the energy industry? No - or so says the history of mankind. From what I have learned from you and others regarding energy reserves, there is considerable "discretion" as to what constitutes P1, P2, P3 reserves that people, who wanted to mislead, could play with and mislead investors - Shell downgrades for example.
Since there is discretion in what constitutes P1,2 or 3 reserves, new or old SEC rules, there's always room for fraud. Independent auditors don't prevent this fraud, sometimes they participate in it, again, consider Enron.
Seahorse the important difference now is the third party audit....SEC demands that of 90% of your total reserves booking. In the past oil companies certainly had leeway to interpret the P1 and P2 categories but now with a third party involved the interpretation of SEC regs is very consistent. For instance you would not be able to book P1 unless you had a market and a sales agreement in place, irrespective of how many wells you had in a particular pool. The operative word is "economically recoverable" and the consulting firms that make almost all their money from third party reserve audits stick by the interpretation pretty strictly. The Enron debacle is a horse of another color completely. Could oil companies play the same game from a money based accounting standpoint....of course they could if they could convince their auditors to lay off the same way Enron did. This can't happen in the reserves side of things because the third party reserve auditors are now joint and several liable for the reserves that a company books. And the SEC will not accept those reserves without the third party signature.
Remember that the external auditors for Enron would entreating them to clean up their act and provide further information for sometime.
Also I need to emphasize that some of the reserve downgrades that you see are do solely to some of the rules imposed by SEC. As an example they require that the price for a product on Dec 31st governs your reserve bookings for that year. Many of the heavy oil producers took a swift kick in the cojones in 2004 simply becase the price for heavy crude was at an unusual low on that day. As a consequence much of their reserves showed up as being uneconomical (due to high cost of extraction) and reserves that were booked previously had to be written down. If the following years Dec 31 price is much higher then that company can add those reserves back in. So we need to be careful as to what is actually happening behind the scenes. Often this takes some digging through various press releases and delving into the companies annual report. I believe that a similar issue was at least part of Shell's problem....the oil was physically there in the reservoir it was just that project cost increases and contract delays meant that the reserves could no longer be considered P1 category. Of course that wasn't the only problem.