Crude oil storage tanks are seen from above at the Cushing oil hub, in Cushing, Oklahoma, March 24, 2016. Chinese independent, or teapot, refiners are bringing in rare cargoes of North American heavy crude in a new long-distance flow that traders say has only been made possible by OPEC’s output cuts and ample supplies in Canada and the United States. In April, at least 1 million barrels of the heavy crude Mars, pumped from the U.S. Gulf of Mexico, are expected to land in China’s Shandong province and 1 million barrels of a second unidentified heavy grade will arrive in China, trade and shipping sources said last week. This follows the arrival in January of 600,000 barrels of U.S. Gulf Blend, a heavy crude made up of a blend of various U.S. and Canadian grades loaded onto ships on the U.S. Gulf Coast, according to the sources and shipping […]