In shale strongholds of North Dakota and Texas, physical crude grades are trading at the highest premiums to futures prices in years, offering a glimmer of hope that a pickup in global oil markets might follow. While crude futures hover around 6-1/2-year lows, the cash markets, where producers and refiners buy and sell physical barrels of oil, are sending a more optimistic, if short-term, signal. West Texas Intermediate crude delivered to Midland, Texas, at the heart of the Permian Basin, is trading at a record $2.75 premium to benchmark U.S. futures. North Dakota’s Bakken crude fetches more than 50 cents more, the highest in two years. The two areas produce more than 60 percent of U.S. shale oil. Many cash crude traders say the relative strength of these markets most likely reflects local, short-term factors: newly built pipelines in Texas are increasing demand for local crude, while Midwest refiners […]