They are about to stick 150 tonnes of equipment on a 450 ton leaning thing that is resting on a broken pipe.
What happens to the stock price if the whole things comes crashing down?
The force will be exerted equally on every square inch of the inside of the pipe / riser assembly - not on the bolts.
The gates on the rams will be the critical area and they're rated for 15000 psi.
It's the same principle when you try to block a garden hose with your thumb. As water can not come out, all the pressure in the garden hose will be pressing on your thumb trying to get the water out. It's an extremely high pressure which will push your thumb away.
How does the psi even correllate to the bolting?
Where did you get 6000psi? BHP is roughly 12500 from all I've heard.
An API 2-9/16" 20m flange does require 8 bolts but thy're only 1-1/4" diameter.
That is a link to a page that contains hours of updates and presentations. Do you expect me to wade through all of those to verify what is already known - that they did not straighten the BOP with jacks?
A link to the presentation would be nice. But it does not exist or somebody would have pasted the link.