Thanks, I would think that would depend on exactly how they mined their facilities and all, would they just blow up their infrastructure or the actual pipes in the ground themselves, making the invader have to re-drill every single field? Either way I would bet it would take more than three decades to get anything near previous extraction rates, because this is about the period of time it took for the saudi's to get expand their own production in the periods other than after the 70's and 80's when oil prices were low and not much effort was being made to increase production. The fields would likely be declining at ridiculous Cantarell like rates due to the fact secondary and tertiary recovery technology is being used, and you would likely have to replace all that salt water injection infrastructure, so It would be the most god awful desperate move in the world to invade KSA. I mean it would be like a starving Somalian child trying to swim to across the Indian ocean to find food. You might look at joules burns blog for information on Saudi oil infrastructure and look at the Iraqi Invasion and see how those fields were manipulated. I can't see how it would be worth it even purely economically because invading Saudi would collapse the world economy no doubt about it with supplies as tight as they are. Although being aware of history much less logical invasions have taken place.

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