The gravities of crude oils processed in US refineries have slowed from a previously rapid decline in quality to a decrease of 0.10° API/year during 1994-2003. In that same period, there was a ...
Based on a sample taken July 27, 2018, Equinor ASA (formerly Statoil ASA) on Oct. 24, 2018, issued a commercial assay of heavy, medium-sulfur Hebron crude (OGJ Online, Nov. 29, 2017; Jan. 4, 2013).
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