The IMF has pegged breakeven at $80-85/barrel for the Saudi's to breakeven. Probably a generous estimate considering their 2019 budget is projected to rise 13% over 2018 to $295B. Then there's the off-budget war in Yemen.
US shale production growth shows no signs of slowing and is eat up all marketshare left hanging by OPEC+R production cuts. With rumblings of discontent in Russia, this minimal level of cooperation may not even last until the summer. We should start to see "every gal for herself" behavior from oil producing nations as even they acquiesce to the reality of near term peak oil demand. That could drive brent even lower for 2019/20.
The IPO has failed. The $40B bond issuance to "buy" SABIC was initially rejected by US/global banks and is still teetering. The $10B effort to diversify the Saudi economy into finance has failed completely due to lack of interest....and that was before they kidnapped every wealthy Saudi in a $100B shakedown.
If bond issuance isn't an option past this time next year, and domestic discontent requires more and more spending, what's the next step?
Tremendous mess they find themselves in. Well deserved, but I guess it always is.
Perhaps a full throttle embrace of renewable energy? Maybe they could even turn all that Sun into liquid fuel for export.
My preference would be for the House of Saud to wither away with as little bloodshed as possible and for SA to become an open democracy, a shining example to all it neighbors.
That and a nickel will get me a Bazooka Joe.