With the ice-free drilling season nearing an end, Shell Oil started its first exploration well in the Chukchi Sea off the northwest coast of Alaska on Sunday.
At 8:30 a.m. Eastern, the Noble Discoverer began drilling. On Friday, the drilling rig was moored to eight anchors, spread in a circular pattern 6,500 feet across on the sea floor to center the rig over the well. Each anchor weighs several tons. - The Washington Post