I heard from a non government sorce quoteing a BP insider it's between 20,000 to 70,000 psi, nothing can stop that much pressure, if thay plug it, it'll keep blowing out other places in the pipe, thats why it isn't plugged already in my openion...
That makes more sense. That kind of pressure is insane, and my guess is that could easily blow out their pipeline. The news outlets were reporting 9000 PSI.