Welcome to European Tribune. It's gone a bit quiet around here these days, but it's still going.
The Soviets did not claim that when they did it they melted and vitrified the rock at the well bore.

Right. The video simulation I watched showed the shaft for the nuke as distant from the well bore so that the area of rock through which the bore passed was part of the rock that was compressed. I don't know if it would be advisable to attempt to vitrify the area of the well bore or not. Would depend on the degree  of control possible.

A possible problem with "bottom kill" is that the cement would be propelled up the shaft, both inside and outside the casing. If the path outside the casing were to properly set, that might make a kill possible, but in order for that to happen, pressure greater than that from the reservoir would have to be applied to the drill pipe and casing from above, unless the combined weight of the injected material, say a barium compound, and the existing mass of existing material in the casing and pipe plus injected material exceeds the reservoir pressure.

Likewise, unless appropriate countervailing pressures are maintained in the relief well bore as it approaches the casing that approach could trigger (an additional?) failure of the casing. I have no idea how "appropriate countervailing pressures" could be determined at this point. Other posts on TOD have indicated that the casing is probably still intact for at least a considerable distance down, else the BOP would not be the major source of discharge.

"It is not necessary to have hope in order to persevere."

by ARGeezer (ARGeezer a in a circle eurotrib daught com) on Fri Jun 18th, 2010 at 03:49:09 PM EST
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unless appropriate countervailing pressures are maintained in the relief well bore

The drilling mud is designed to do that.  If reasonable care is taken with the relief wells (good procedures followed, as was not done with the original well) they most likely will not blow out.  

But yes, as with any well, the chance is always there.  

The Fates are kind.

by Gaianne on Sat Jun 19th, 2010 at 03:42:22 PM EST
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