TORONTO—Hard-nosed negotiating by railway companies is keeping Canadian oil producers from cashing in on a world-wide oil price rally.
Oil producers such as Imperial Oil Ltd., Suncor Energy Inc. and Cenovus Energy Inc. have few avenues to ship their oil to the U.S., their primary market. The pipelines that normally take the crude are almost at capacity, which leaves railroads as the only option for larger shipments.
But…
