in just hours, the ruptured bp well will be plugged up for good. i am now joined by a professor of petroleum geoscience at the university of houston. we know that there is still an enormous amount of oil in the reservoir, but should it be and the into again? what do you think? i think that what they are going to do is to probably plug the well that they have drilled now, but eventually, they will drill into the well. and this final procedure will secure the well. the reservoir, although it is relatively large, if it is onshore, that far offshore, it is a relatively small field. so, economically, it may be difficult to produce. is it advisable or any possibility once this is sealed that something could go wrong and we could get another leak from this particular well reservoir? this well once they seal it will be very securely sealed.