Today, BP said that the endeavor to discontinue the flow of oil feeding the massive oil slick in the Gulf of Mexico can take three months.

The oil giant introduced a new front in its scuffle to restrain the spill, as engineers started drilling a relief well devised to stop the spilling oil eternally.

The new well that is in 5,000 feet of water, is intended to cut off the existing well at 13,000 feet, around two miles, under the seabed. It will be utilized to inject cement to limit the one that is dripping.

Drilling started on Sunday at 3pm local time, after days of impediments caused by bad climatic conditions. However, BP verified that the process would take "some three months" to finish.

The procedure that will cost around $100 million is being embarked on by a second rig called Development Driller III, which BP tugged to the site last week.

BP Group Chief Executive, Tony Hayward, said that this is another important step in their work to perpetually prevent the loss of oil from the well.

He added, "At the same time we are continuing with our efforts to stop the leak and control the oil at the seabed, to tackle the oil offshore and to protect the shoreline".