Oil 101, by Morgan Downey, is without a doubt the most detailed and comprehensive book I have ever read on the oil industry. In fact, I am not aware that another book like this even exists. This is not an opinion piece, nor is it a peak oil book. It is a collection of factual information covering all aspects of the industry. From oil in the ground to product in the tanks (and everything in between) - this book contains everything you could ever want to know about the industry. I like to think I know quite a bit about different areas of the industry, but I still managed to learn a lot from this book.

It doesn't matter if you are a complete novice or already know quite a bit about the industry; there is something for everyone in this book. Downey displays a deep understanding across all sectors of the industry. For instance, if I didn't know better I would have guessed that the refining chapter was written by someone who had spent an entire career in the refining industry. The only books on refining that I have read that were more comprehensive were those written specifically as technical guides for running a refinery. Other areas are covered in similar detail.

Every year in late summer, you will start hearing references in the media about the conversion to winter gasoline, such as the following (originally in the Bradenton Herald, but the link is long dead):

Motorists can thank a mild hurricane season in the Atlantic for the lower gas prices, according to the American Automobile Association.

Other factors include the end of the summer driving season and a cheaper winter fuel mix.

Gas stations sell a special, more expensive fuel blend during the summer to cut down on smog during hot months. Stations nationwide will start selling a less-expensive winter fuel blend Friday, which could lead to even lower prices, analysts said.

So what does this mean, and why does it make winter gasoline less expensive?

NB: This is a reposting of an article written by Robert two years ago on how winter gasoline differs from summer gasoline, and why this tends to make winter gasoline less expensive than summer gasoline. We also now have a lot of reports of gasoline outages due to short supply following Hurricanes Gustav and Ike. Feel free to discuss those in this thread or scroll down to the refinery/pipeline/gas shortages thread.

Where is our gasoline and diesel supply headed? Even before Ike hit, quite a few areas of the US were starting to see gasoline shortages. The impact of Ike can only make shortages worse. Most likely, it will take refineries at least a week or two to get production back to normal levels after a storm of this type, considering the impacts of electrical outages and flooding. In this article, I will examine some of the issues that seem to be involved. Based on my analysis, fuel supply shortages are likely to last well into October, and are likely to get considerably worse before they get better.

Insight 1. Even before Hurricane Ike hit, inventories were very low.

FIgure 1. EIA Graph of Gasoline Inventories

According to EIA data, gasoline inventories the week that Hurricane Gustav hit were the lowest that they had been since 2000, amounting to 187.9 million barrels, or about 21 days supply. Quite a bit of this inventory is needed just to keep the pipelines filled. EIA does not publish information as to how far inventories need to drop before we start seeing outages, but it is clear that we have now reached the point where shortages are developing.

(Welcome: we are now on a later and more updated thread, which can be found here: http://www.theoildrum.com/node/4525 NB: you may want to just go the front page (it will be post #1 or #2) to get to the most recent thread: http://theoildrum.com ...)

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Updated 9/12 2300 EDT--next update in the morning when we know more about where and how much power/wind was involved. Hurricane Ike's current track currently is headed directly for Houston/Galveston and is expected by the National Hurricane Center to be Category 2 (or perhaps a 3) at a late Friday/early Saturday am landfall, which remains in striking distance of over 5 million bpd of US petroleum refining capacity. (A little perspective: 5 MMBBL is about 30% of US capacity (about 15 MMBBL), and a bit less than 6% of global capacity (~85 MMBBL)).

The concern now is the where of landfall. If the storm continues further west before turning (see Chuck's update below), then Texas City/Baytown will be in a very bad place, and that's >1MMBBL all by itself. The next two maps represent the current NHC track (the further "left" the storm goes the worse it is for TX City and Baytown, note red storm surge in this track, Baytown is at the back of the bay) and the GFDL track below...as of this update the eye was wobbling to the left of the NHC track, which isn't a good thing for Texas City.

(all the maps and models moved under the fold to conserve bandwidth...scroll down)