Futures lost as much as 1.3 percent in New York after falling 1.9 percent on Tuesday. U.S. inventories rose by 6.51 million barrels last week, the American Petroleum Institute was said to report. That would be the biggest gain since March if confirmed in government data on Wednesday. “The API data showed an inventory build, in contrast to expectations of a draw, which is weighing on the market,” said Giovanni Staunovo, a commodity analyst at UBS Group AG. “The Russian news doesn’t help either.” Gasoline inventories rose by 2.4 million barrels last week, the API said Tuesday, according to people familiar with the data. While the institute also reported a gain in crude stockpiles, a Bloomberg survey showed they may have shrunk by 2.4 million barrels. The U.S. Energy Information Administration will release the data at 10:30 a.m. New York time on Wednesday. Click Read More below for additional information.

Futures rose 0.2 percent, leaving prices in London little changed on the week. They jumped above $65 for the first time since 2015 earlier on Tuesday after the Forties pipeline in the U.K. shut down because of a crack. Those gains were eroded as the International Energy Agency’s voiced doubts the market would fully rebalance in 2018, diverging from the view of OPEC. “It’s been volatile,” Torbjorn Kjus, analyst at DNB Bank ASA, said by phone. If the Forties pipeline is “out for a month, it should have a positive effect” on prices as 10 million barrels of oil supply could easily be lost to the market. Click Read More below for additional information.

Canada’s freight rail network could come to a grinding halt this week, inflicting a huge economic toll after the country’s two largest railroad operators on Sunday issued lockout notices to the Teamsters union that represents nearly 10,000 workers. Failing last-minute deals, both Canadian National Railway and Canadian Pacific Kansas City plan to lock out workers from the early hours of Thursday. It marks the first time that the country has faced a simultaneous labor stoppage at the railroad firms as they normally negotiate their labor agreements in alternate years. The stoppages could cripple the shipment of food grains, beans, potash, coal and timber which form a large part of Canada’s exports, while also impacting shipments ranging from petroleum products to chemicals and cars.