[Chaguito]

The point of the article is that they haven't closed a single valve yet. So, there is absolutely no way to know what the pressure in the well is at this point.

And the point of the testing will be whether the sealed well holds pressure, whatever that pressure may be, rather than bleeding it off somewhere else.

[justa-hairyape]

And the point of the testing will be whether the sealed well holds pressure, whatever that pressure may be, rather than bleeding it off somewhere else.

There is at least one major flaw with their high pressure test plan. What if the Well Bore is only partially compromised ? It is possible that the high pressure itself could blow out the well bore. Could happen instantly, in a few minutes or a few days. Then it is GaMe OvEr. If they are going to close the valves, they need to have top top kill mud and cement all lined up and ready to go. Every minute could count.