Bottom hole pressures can fool you. Even here where they are generally considered fairly low, there are wellheads out there with 5000-10000 psi on them. Madden Deep in Wyoming comes to mind as one place on land notorious for losing rigs. There are plenty offshore, too.
Highest bottomhole pressure: 34,660 psi, a world record,,,
I think this one was in a ME field,,,
The best I can remember is that area south of Mobile was
9 or 10,000 lbs,,,ain’t sure,,,
Thunder Horse ran into pressure problems south of the
blowout a year or so ago...