Do you really think they would be filling their tanks farms instead of selling it at over $70 a barrel?
If they were convinced that oil a year from now might be $80 or $90 a barrel (and no, that's not a prediction on my part), then they would very likely try hoarding some.
This is interesting, but does it really work this way? If they don't sell it now, then they don't have the cash that they would have if they did. And can't invest or use that cash.

They also risk that the price will go down. And if it does go up because of this very supply being withheld from the market, doesn't putting it back on the market lower the price by about the same amount?

This hoarding issue comes up all the time and I wonder if such conspiratorial manipulation of the market is more trouble than it is worth.

Remember recent reports that Goldman Sachs was buying warehouse space in Amsterdam and millions of barrels of oil to store? A VLCC supertanker holds 2 million barrels. Those things are huge. How was Goldman planning on storing the oil - in actual barrels? On pallets, moving them with forklifts? How much warehouse space does Holland have? And two million barrels, well, that's about 35 minutes worth of oil.

Only the Saudis and maybe the Russians could hoard that much. Someone made light of the fact earlier that Ghawar is a great place to store oil, so the Saudis would be pumping it out to pump back in. Good Idea.

But I'm still open to hearing how this hoarding thing might work.

Sincerely,
Lee Raymond

Simmons says the Saudis have an extensive tank farm system.

SPK: How large are the Saudi tank farms in country and internationally, like the ones in the Caribbean?

MRS: Somewhere between 50 and 70 million barrels of domestic tank farms and they have about 10-15 million barrels of Atlantic basin tanks farms that is broken out between some storage they rent in Rotterdam but the majority is in the Caribbean. The only times there is clear evidence of a Saudi surge was during the Iraq war where it jumped by about 800,000 barrels a day for about 45 days. I bet you they were just emptying the tank farms.

I totally agree, but remember, 85 million barrels is one day's usage and 9 days of Saudi production. In relative terms that is nothing. So they sock away 85 million barrels. Then what? I mean, if anything, it just seems prudent.
85 million barrels is one day's usage and 9 days of Saudi production.

Ah, but they don't have to supply the whole world, or replace their entire production.  The rest of the world will still be producing.  They will still be producing.  There is no swing producer any more, so a few million barrels either way can make a big difference.

The question was if they are hoarding some oil.  I think they could be.  Surely they'd want to replace the oil they released during the Gulf War, wouldn't they?  Just to be prudent.

Tough questions. I think about them too much. Is storing hoarding? We have 700 million barrels in our SPR. Is that hoarding? I think hoarding might be(with oil at least in many cases)just stored oil that someone else would rather you be selling.

The food in my neighbor's refrigerator is just that, in fact I  don't know what's in it, nor have I ever even seen the refrigerator. But if I'm starving, hey, now my neighbor is hoarding.

The Saudis or the "speculators" weren't doing anything wrong until gas hit the still ridiculously low price of $2.90/gallon. Now they are hoarding. I think this might just be another case of Americans needing something or someone to point a finger at.

We have 700 million barrels in our SPR. Is that hoarding?

That's a big YES in my book.

The us still manages around 7mmb/d, so what is in the spr is 100 days of us production. how is it hoarding to pump from one hole in the ground to another one? Is it hoarding to not produce oil in alaska's preserve?
The us is accused of insufficient savings. the spr is one of the few places where the us is actually storing something for future use that is likely to have value at that time.
The American Heritage Dictionary defines hoard this way:

A hidden fund or supply stored for future use; a cache.  Or To keep hidden or private.

It's not really hidden, so you could argue it's not a hoard.  OTOH, it certainly is "private," in that not just anyone can use it.

Personally, I don't see anything wrong with hoarding.  As long as it's not carried to extremes, anyway.  

everone hoards.  the spr is a hoard on a large scale.  keeping the car above 1/2 tank as "preparation" is hording on a small scale.  iirc, one of the factors in the 70's shortages was that everyone tried to get their cars up to F (full) at once.  200 million cars, and say 10 gallons per car, that's a sudden (fear fueled) 2 billion gallon blip in quantity demanded.

i think politicos try to argue against that kind of small sacle hoarding, and set as "bad" buying extra containers & etc.

storing is hoarding in any resource constrained environment.
Profiting is to Gouging
as
Storing is to Hoarding
Storage is just that, and the term "hoarding" is someone's negative judgement on the motivation for that storage.  I can see lots of reasons to store, which could be good or bad, depending on whether your the one doing the storing or not.
I think an argument could be made that they are hoarding, and we are not.

Hoarding has a connotation of secrecy.  Hoards are hidden, stores are not.  Everyone knows about our SPR, but no one knows exactly how much the Saudis have.  

I thought they had exactly 261 Billion barrels. That number never even changes. How great is that!?
If I have gun and I'm hungry, and you want maintain any control over your your supplies, perhaps you might want to keep quiet about it.  
It would seem the only way to store quantities of oil that are at all significant in size relative to the volumes of oil used is to keep it in the ground.  Maybe in transport, as was discussed before?

I would think that the amount you need to be able to store to affect the price would decrease as the demand gets close to the supply maximum.

I guess it all depends on why one is storing the oil.  If you really want to have a buffer, or a strategic reserve -well you need a hell of a lot of storage capacity.  If you only want to affect price as the supply/demand ratio goes to 1, you may not need so much.

Its probably just a small buffer stock for normal, commercial ups and downs
Again, I don't think they'd fill tanks instead of selling at these prices. If they were to be hoarding the oil, they would have to know peak is here with pretty good certainty or they'd be taking a chance of prices dropping in the future. I don't believe they think they're at peak yet.
If anyone is going to know if the Peak is here, then I would say that the Saudis are the best placed to make that call.

Personally, I think their anti-peak propoganda over the last 12 months tells us that they already know.

Thanks for responding to my question with some real data. Most of the responders just offer their opinions without any references.

hint, hint...

Real data is only known to the Saudis, and they aren't telling. Even Simmons' figures are estimations of storage capacity but don't tell us what they are doing today with their oil. If you can find something concrete, let us know.
There is a company in the Persian Gulf that monitors tanker sailings by looking out the window. Does anyone know where it is published?
I recollect some such company, think it was started by a swiss, dutch or german chap and it might be based in Geneva. As far as I know the info is not posted online, costs money to receive the data - not surprising since it costs money to run a tanker spy network. The data apparently has a good reputation.

If I stumble upon any references or links to / about it I'll post them at TOD, can't even remember the company's name atm, sorry.