It's probably non-trivial to get, but it would also be interesting to see the Production and domestic KSA consumption data for Arabian heavy vs Arabian light as a function of time (perhaps even including condensates/NGL).

The price difference alone between Arabian light and Arabian heavy tells us very little, I'm afraid.

If most of the upcoming production for the next year or so is of light or very light category (ref: table 2), then that is slightly promising, fwiw. Unless of course, most of it were to be consumed domestically within the KSA (?).

However, almost everything in the table after 2009 is heavy crude, the stuff that isn't going down so well with the buyers/refineries these days, if I'm not mistaken.

What have been the near-to-mid term historical trends of Arabian Heavy vs Arabian Light production/domestic consumption? Anybody have old guesstimate data on these?

I found the price information in Jerome's article of interest. Saudi is not offering a discount for their heavy or sour as one might expect.

I actually wouldn't expect them to increase their discounts. Why would they undercut the competition, when there is no competition?

A guy goes to the butchers to buy a chicken...

"How much for a chicken?"
"$4 each" says the butcher.
"But they are only $1 at the supermarket"
"Why not go to the supermarket then?"
"Because they are sold out"
"Sir, when I am out of stock, my chickens are also $1 each".