It's safe to say that many of us were stunned by the appearance of the following graph in the IEA's latest World Energy Outlook:
I wondered this morning what this graph is hinting at. What might the IEA realistically think the oil situation will be like in 2035? To poke at the question a bit, I deconstructed the graph category by category.
I started with the assumption that the volume they predict from currently producing fields is relatively accurate. I agree that's not a totally safe assumption, but you have to start somewhere -- and the IEA already ate a lot of crow publishing it. However, they have been consistently optimistic in their supply projections, so I dock them a bit for that.
The "Fields Yet to be Developed" category has some potential to add to the output, but the observed lack of field development during the recent price run-up makes me as skeptical as hell. Also, most of these fields are in deep water, making them quite slow and expensive to develop. I decided to give them about half of their projection.
It's with the "Fields Yet to be Found" region that the hilarity really begins. Yes, there will be some, but we already know a heck of a lot about where the oil-bearing formations are around the world. As with "FYTBD" above, most of these fields will be in deep water, and will take a long time to discover, prove out and bring on line. Given that we don't even know yet if they're out there, and also taking into consideration the discovery profile for new fields over the last 40 years I decided to give them about 25% of their estimate.
Natural gas liquids are found in conjunction with oil, in the same wells. If we pump less and less oil we will also lift less NGL. So the increase they show is dodgy. I gave them a bit more than the proportional reduction of crude oil - about half of their projection.
Unconventional oil includes heavy oils and tar sands. It's dirty, energy-intensive (low EROI) and expensive to produce and refine. There will be increasing opposition to expanding things like tar sands production due to the environmental impacts. I'll give them a third of that.
So where does that leave us?
Currently Producing Fields: 15 mb/d
Fields Yet to be Developed: 12 mb/d
Fields Yet to be Found: 5 mb/d
Natural Gas Liquids: 10 mb/d
Unconventional oil: 4 mb/d
-----------------------------------
Total: 46 mb/d
That represents a bit more than half of the oil we have today, and the decline to that level occurs over only 25 years.
As Robert Hirsch reminded us in his seminal 2005 paper for DOE, if we only start looking at mitigation strategies once we already have a strong signal that PO has occurred, we cannot avoid major economic and social impacts. Peak Oil has happened. We have barely recognized that fact, let alone begun serious work on mitigation.