QUOTE(Furby @ Jun 25 2007, 12:12 PM)

....The case of the saudi's though is interesting. They may well have lots of oil, nobody seems to know for sure what they have. But as peak starts to bite, will they decide to keep it for themselves? There was an aritcle about this on oildrum recently.
http://europe.theoildrum.com/node/2670 If the scenario is that they have lots of oil and are going to be more reluctant to export it, then it may well make perfect sense to buy more aircraft.
F
Saudi is indeed the world's most important oil producer due to a combination of vast reserves and relatively low internal consumption thus leaving 75% or so of their output for export. In recent years an increasing number of concerns have been raised as to just how long will Saudi be able to grow (or even maintain) their oil output contrary to conventional wisdom by IEA, EIA, USGS etc which have tended to consider Saudi reserves as 'limitless'. Energy investment banker Matt Simmons has analysed Saudi oilfields in detail in his 2005 book (which I'd highly recommend) 'Twilight In the Desert: the Coming Saudi Oil Shock and the World Economy'. Some of the most serious concerns that Matt (and others) have raised include:
1) Around 90% of Saudi's oil comes (and has always come) from 5 giant fields which are typically between 5 and 6 decades old.
2) Their largest field by far (Ghawar) has seen very extensive use of MRC wells which have replaced traditional vertical wells in recent years reportedly due to rising water cut. The problem here is that once the water reaches the new horizontal wells rapid production declines will ensue.
3) Saudi has had no significant new discoveries for several decades.
4) Saudi's 'sweet spot' is becoming depleted (i.e. North Ghawar etc) - increasingly output is trending toward heavy, sour crude which is unsuitable for many existing refineries and yields less high quality transportation fuel per bbl of feedstock. Such heavy, sour oil is also more difficult to flow at high rates (the earth may well only yield such oil over many decades) and corrosion and environmental issues are much more profound when handling such oil.
Matt Simmons made a number of presentations upon the launch of the above book and clearly stated 'If Saudi has peaked then so has the world':
Twilight In the Desert (PDF Download); many more presentations here:
Matt Simmons' Speeches. Stuart Staniford from the Oil Drum has analysed Saudi's Ghawar field more recently in what amounts to an excellent thesis. Stuart's report is referenced at the bottom of the paper referenced in Furby's link (post #2), here's the direct link:
Depletion Levels in Ghawar (Updated).Another key component of the future oil supply equation for major oil importers such as US and (soon to be) UK is the net export capacity of the world's key oil exporters, for example Russia, Saudi, Iran, Norway. Jeffrey Brown, a geologist in Texas has produced a series of papers showing how flat or declining oil production in key exporting nations will have a disproportionate impact on supplies for importing nations due to rising indigenous consumption. Recent news items state that foreign car sales in Russia have increased by 50% in 1 year - all will consume fuel and thus lessen Russia's export volumes. In Saudi some 50% of their fast growing population is aged 21 or under; all will rapidly become new energy consumers. Even if the exporter nations' Gov'ts wish to focus on exports at the expense of internal consumption it will be hard to do so and maintain any kind of popularity back home - witness the fuel riots in Iran in the past 3 weeks following introduction of gasoline rationing. References for the Export Land Model:
Net Oil Exports Revisited and
Russian Car Sales & Net Oil Exports. It's the opinion of many of us that the impact on OECD oil imports as a direct result of fast declining export volumes in the world's key oil exporters is one of the most worrying aspects of the coming oil crisis.
Returning to the subject of aviation raised by OP it's interesting to note that the airlines, airport operators (such as BAA) and, in my area at least, the local chamber of commerce and regional press all welcome rapid aviation growth and describe it as 'a good thing'. Consumers are backing this thinking up by taking ever more flights, all facilitated by UK Gov't which plans to cater for a massive expansion of aviation between now and 2030. A few scientists, however are more in touch with long term reality and have warned repeatedly that 'the world can only stand so many tens of doublings of anything', as per following papers:
M King Hubbert and
Dr Albert Bartlett. Unfortunately few of influence listened when the warnings were issued or are listening now. Regional airports in UK have reported high year on year passenger growth in the recent past, growth has exceeded 9% pa at some airports. Let's look at what even more modest growth rates mean for activity in 2050 assuming the airport has 10 aircraft movements per hour today and aircraft seating capacity remains static:
5% growth pa - 81 aircraft movements per hour
6% growth pa - 123 aircraft movements per hour
7% growth pa - 183 aircraft movements per hour
Based on the above, even with 5% growth additional runways would be required at many existing airports.
Such growth figures over more than a decade or so are, of course, absurd; basically our philosophy of endless economic growth is placing us on a path for a head on collison with geology where the planet's finite limits in terms of oil supplies will manifest themselves. In ecological terms this scenario is known as 'overshoot' and it's invariably followed by collapse. As we reach this point we must expect directors, politicians etc to 'cut and run' leaving the rest of us to 'carry the ball.' Such a situation will not be pretty, especially for those who are heavily indebted and yet it's the default scenario in the absence of early and massive mitigation measures to reduce consumption of energy.