Reuters: BP said on Friday that its ruptured Gulf of Mexico well that caused the world’s worst marine oil spill will be permanently sealed on Saturday. The oil company’s relief well intersected the blown-out Macondo well on Thursday, paving the way for workers to pump in the cement that will result in the so-called quot;bottom killquot; of the well. Once the cementing operations are complete, the relief well will be plugged and abandoned, BP said. BP sealed off all flow with a cap on the …