You may notice that I said "and stays there for years". Several OPEC members need prices in the 90 to 100 dollar vicinity to fund their budgets. No money for social programs (handouts and subsidies) the rulers are in trouble and may end up hanging from lamposts if lucky, watching their families being skinned alive before it is their turn if not.
The price of oil may crash down to the 60 or 70 area but at that level the high cost producers lose money. The Saudis have to dip into reserves to keep their population docile. Yada yada yada. The Saudis and other OPEC members would reduce production and send the price back up to what they would consider a more reasonable level.
With production costs under 30 dollars a barrel and no net debt Coastal will survive whatever happens to oil the next year or two and emerge financially strong.
Times like the present are no fun but outside of going to cash Coastal is a good place to ride it out. If I went to cash the next day Coastal would gap up big time in response to a buyout deal,