Demand for medium sour grades rises as light sour crude turns expensive

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Demand for Middle East medium sour crudes, such as Oman, Upper Zakum and Al-Shaheen, continued to grow as prices for light sour grades from the region, such as Murban, turn increasingly expensive for Asian refiners, sources told S&P Global Commodity Insights June 13. While it is still early days in the August-loading cycle, buyers have kicked off their purchases as…