>Their ceramic coated XRT has the highest ratings, and its good up to 250 degrees C, which is the temperature that's been reported in the Mako Trough at depth...so this stuff would be pushed to it's limit that's for sure.

Since Exxon is going after the Szolnok zone, and total depth is about 4300 meters, what would be the temperature at those depths? I seem to recall that there is a formula for temperatures by depth in the Mako trough. Are you in possession of this information?