oil fields in the US are declining because fields in the US are not as profitable as fields in far away lands where they get so much bonuses, tax breaks, and free support in other forms plus the cheap labor in said countries. just like Iraq was used to tie up production on the 2nd largest oil reserves in the world to make sure production increases would be less possible, foreign drilling is easier to do and easier to delay shipments to the market. Saudi Arabia having less production could mean a lot of things. 99% of the time, the US asks SA to either increase or decrease. Or it could be a result of maint. you have to look at yearly output not a few months