MRC -- U.S. oil pipeline and export terminal operators are stepping up quality checks after finding an out-of-specification cargo that raised worries of excess metals contaminating Texas shale oil, operators and sources said, said Hydrocarbonprocessing.
WTI Midland, the crude from the top U.S. shale field which joined the Dated Brent index in June, increasingly is flowing to European refiners. Concerns that contaminated oil could damage refining units and the oil's reputation spurred more routine testing, people familiar with the matter said.
Oil index publisher S&P Global Platts added WTI Midland to the Dated Brent Index and set a quality standard for the crude. Its testing has found only one out-of-specification cargo among this year's 54 trades, a spokesperson said.
WTI Midland crude flows to Europe have set the price of widely used Dated Brent on more than half the trading days since May, according to price reporting agency Argus, putting more of the U.S. crude in the hands of European refiners.
But high levels of iron and vanadium metal in oils blended into WTI Midland can damage European refineries, which typically have less complex processing units and are unable to filter the metals.
U.S. pipeline companies and crude marketers often mix more expensive WTI Midland with cheaper varieties such as West Texas Sour, Domestic Sweet or Eagle Ford to boost profit margins. Those cheaper grades often contain higher levels of iron, vanadium and nickel.
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