do you know what type of BOP they are using? And why it might not be working?

http://en.wikipedia.org/wiki/Blowout_preventer

Wikipedia says there are 2 types. Could be there is some sediment somewhere causing a mechanical failure? Or maybe some hydraulic fluids need to be heated up?

If it is going to take months to fix it using methods that have never been tried at those depths, it seems that spending some time trying to make that device work would be a good investment.

Also, can we get a temporary stackoverflow ( no pun intended ) for engineers working to solve this problem?