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I’m sure with sufficient research one could find the last rig explosion. It happens. Luckily safety measures are put into place to limit the risk of migrating well bore fluids/gases from causing what happened on the deep horizon. Unfortunately, sometimes they fail too.

Saboteurs could blow up 1,000 wells at the stage this well was in and probably not achieve the results that happened here. Casing was run and the cement had some 20 hours to set up. That said wells can kick after it is cemented and it has happened-

MMS Safety Alert No. 165, issued in April 1995 identified 20 diverter incidents in the Gulf of Mexico from 1973 to 1995 related to well kicks after cementing surface casing. Another 13 similar incidents have occurred since 1995, with the most serious consequences being broaching the surface, cratering, well loss, and rig and platform destruction by fire. Annular flow related to cementing surface casing has been identified as one of the most frequent causes of loss of control incidents in the Gulf of Mexico.

http://www.gomr.mms.gov/homepg/offshore/safety/safealt/SA_216.html

And here is a list of various incidents that have happened offshore including blowouts and rig losses. feel free to peruse them if you want. You might learn something -

http://www.gomr.mms.gov/homepg/offshore/safety/safealt/safemain.html

Perfect!

Casing was run and the cement had some 20 hours to set up.

Wonder if they ran a "cement bond tool" on wireline to verify the cement job was good?