Question

What was the significant reason that, it took three months to stop the oil leak after the Deepwater Horizon explosion?

Answer 1

Answer:

According to BP's September 2010 report, the accident started with a "well integrity failure".  Hydrocarbons shot up the well at an uncontrollable rate and ignited, causing a series of explosions on the rig.

Explanation:

Answer 2

Answer:

The leak was deep underwater.

Explanation:

I got it right on Plato.