BP said Sunday that it is pleased with how the operation to place a new cap on its ruptured undersea well is proceeding. Officials hope the containment cap will stop oil from gushing into the Gulf. But while robots replace the old cap, crude is flowing freely. The procedure -- expected to take four to seven days -- continued to progress Sunday as crews worked to position a transition spool over the gushing well to prepare for the new connection, according to BP's Senior Vice President Kent Wells. We 're pleased with how it's going, Wells said, but cautioned that the operation, which began Saturday with the removal of the old cap, is only in its second day. Robots removed six giant bolts from the apparatus early Sunday so that the new cap could be positioned. If successful, the effects of the containment cap operation could halt the oil gusher that started April 20 after a deadly explosion on the Deepwater Horizon rig in the Gulf of Mexico. But officials have said the new containment cap would be a temporary fix, and the permanent solution would still be completion of a relief well. There are two relief wells under construction. Wells said Sunday that one of the relief wells could intercept the ruptured well as early as the end of July. We 're feeling very good about how we 've positioned that well, he said. The other relief well is expected to be completed in August. The old