A file photo showing a Libyan oil worker from the Libyan National oil and gas company checks an oil pipelines at the Zawiya oil installation in Zawiya, Libya.

Oil prices dipped on Tuesday as higher output in the United States, Canada and Libya outweighed lower production by Russia and major OPEC exporters ahead of the release of U.S. data expected to show a fourth consecutive decline in crude stocks.

Losses accelerated shortly before Tuesday's settlement. John Kilduff, founding partner at energy hedge fund Again Capital, pointed to a Bloomberg report that the Libyan prime minister and a rival commander had agreed to set up a power-sharing council.