BengaBenga said:
According to everyone in the oil industry (Both the comanies and the countries) the oil price is no good representation of the demand/supply market. Hence the refusal of the OPEC countries to increase production. Sorry for the myth thing. I forgot to add that it's a myth that we've reached Peak Oil already. That's what the Peak Oil organisation says. Of course there is something as peak oil, just not now. Only one year ago Saudi Arabia DOUBLED it's reserves to a massive 400 billion bboe. There are a number of massive projects that are about to go on stream (Kashagan and Sakhalin for example). It's impossible to prove that we've reached peak production when the OPEC countries aren't even producing at their maximum. Current techniques also allow for higher recovery factors and even the reproducing of depleted fields, which will also allow for production bossts. Of course exploration and production is very expensive, but you're wrong to think that the amount of energy that's put into that is very poor in relation to what you produce. Once the infrastructure is in place a typical field can produce for over 20 years. The amount of energy produced is much higher than what's put into the building of the framework.
I can tell you that everything that's done in the oil-business is examined very closely by environmentalist and governments, so be sure that oil-companies do absolutely everything to operate as "green" as possible. Sure the mining of tar sands is very intensive, both energy and environmental, but a lot of money is used to make sure the environmental impact is as small as possible. |
Understood on the myth issue.
Regarding Saudi Arabia's reserves, there are some reasons to doubt the increase on their stated reserves. They weren't accompanied by any big discoveries, and they have reasons to artificially inflate it. There's no real scrutiny of those numbers, as much of the information on oil reserves is considered a national secret.
Regarding the energy return issue, I was mostly talking about discoveries such as oil shale, which seem to return virtually no energy (I saw some analysis which had its energy content as being similar to a mashed potato with butter on it). Some other new discoveries are also not that good in terms of EROEI, which makes sense if you consider that increasingly complex methods are required for recovery, although there are optimizations happening all the time as you said.
Regarding the environmental issues in Canada, I haven't read that much but what I read is alarming. See this page:
http://www.tarsandswatch.org/canadas-water-crisis-escalating-experts-expect-climate-change-present-serious-water-challenges-man-0
A quote from there:
Alberta's oilsands industry is a water glutton, using two to four barrels of fresh water for every barrel of oil extracted.
That's staggering... They produce around 1 million barrels per day now, which means at least ~320 million liters of fresh water per day. A human needs around 2.5 liters per day, which means that water would be enough for 128 million people in drinking water.
EDIT - something else about Canada's tar sands that I found on wikipedia (they have references):
Large amounts of energy are needed to extract and upgrade the bitumen to synthetic crude. At this point in time, most of this is produced by burning natural gas which is widely available in the tar sands area. Approximately 1.0 to 1.25 gigajoules of natural gas are needed per barrel of bitumen extracted.[47] Since a barrel of oil equivalent is about 6.117 gigajoules, this produces about 5 or 6 times as much energy as is consumed. Energy efficiency is expected to improve to 0.7 gigajoules of energy per barrel by 2015,[48] giving an EROEI of about 9. However, since natural gas production in Alberta peaked in 2001 and has been static ever since, it is likely tar sands requirements will be met by cutting back natural gas exports to the U.S