ANCHORAGE, Alaska (AP) — Shell Oil Co. is downsizing its plan for off-shore drilling in the Arctic this year amid delays completing a spill containment barge required by the federal government, a spokesman said Tuesday.

Shell now hopes to complete two wells in 2012 instead of five. One would be in the Beaufort Sea off the northern Alaska coastline, and the other in the Chukchi Sea off the northwest coast between Alaska and Russia.