Argentina accuses Chile of encroaching into its territorial waters and trying to seize part of the continental shelf. Officials described the move as unacceptable.
These include areas along continental shelf formations where ice is attached to the shore, the National Institute of Polar Research said in a statement.
Offshore drilling platforms extend the search for oil to the ocean's continental shelves--those gently sloping submarine regions at the edges of the continents.
The authors' analysis of 50 years of drilling on the Norwegian Continental Shelf concluded that the differences in success rates between individual firms were random.