Aim ... fire ... sigh, this is too easy, why do I bother ....
>It's worth pointing out that there are no "disks" or "subsea safety structure" 1,000 feet below the sea floor ... all that is there is well bore. The conclusion is that the well pipes below the sea floor are broken and leaking.
I saw that claim on another forum and it was immediately shot down. The disc is part of a safety valve or flapper valve. It'[s a standard fixture. Here's a cut-away drawing of one, courtesy of Schlumberger.
http://www.glossary.oilfield.slb.com/DisplayImage.cfm?ID=525
Other fallacies:
It's not impossible to bottom-kill a well even if the pipework far above IS totally compromised. The requirement is to pump in dense mud at at least as great a rate as the emerging oil. Once the space above is full of mud, the flow will stop, because the pressure exerted by the column of mud will exceed the upwards pressure of the oil. Simple applied physics.
As many have pointed out above, really big trouble would be signed by the ocean floor subsiding, not bulging upwards as this crackpot claims.
In the depths of geological time, earthquake faulting must have breached big high-pressure oilfields to the surface on many occasions. Life carried on. Compared to a supervolcano, this would be a complete non-event (and supervolcanoes happen every few tens of thousands of years).
As for methane, it forms stable hydrates with cold (4C) water under mile-deep pressure, and an oil spill won't change that.Indeed, the problem with BP's first attempt to cap the well was that the methane coming up with the oil DID rapidly form hydrates, which blocked the "dome". A methane catastrophe would require something to raise the ocean-deep temperature. Warm water (>4C) is less dense, so it rises, so ocean-floor hydreates won't thaw en masse until the whole ocean warms up. Not even a volcano could cause such a catastrophe (luckily, because ocean-deep volcanic eruptions aren't exactly uncommon).
Where we do have cause to worry is methane hydrates in permafrost (ie, on land). That methane is released if global warming causes the permafrost to thaw (no high pressure here to keep it stable). Methane causes global warming. A vicious circle of warming arises. If you want to worry about something, at least choose something plausible, rather than total nuttery.