<Ul> <Li> West Texas Intermediate (WTI), a very high - quality, sweet, light oil delivered at Cushing, Oklahoma for North American oil </Li> <Li> Brent Blend, consisting of 15 oils from fields in the Brent and Ninian systems in the East Shetland Basin of the North Sea . The oil is landed at Sullom Voe terminal in Shetland . Oil production from Europe, Africa and Middle Eastern oil flowing West tends to be priced off this oil, which forms a benchmark </Li> <Li> Dubai - Oman, used as benchmark for Middle East sour crude oil flowing to the Asia - Pacific region </Li> <Li> Tapis (from Malaysia, used as a reference for light Far East oil) </Li> <Li> Minas (from Indonesia, used as a reference for heavy Far East oil) </Li> <Li> The OPEC Reference Basket, a weighted average of oil blends from various OPEC (The Organization of the Petroleum Exporting Countries) countries </Li> <Li> Midway Sunset Heavy, by which heavy oil in California is priced </Li> <Li> Western Canadian Select the benchmark crude oil for emerging heavy, high TAN (acidic) crudes . </Li> </Ul> <Li> West Texas Intermediate (WTI), a very high - quality, sweet, light oil delivered at Cushing, Oklahoma for North American oil </Li> <Li> Brent Blend, consisting of 15 oils from fields in the Brent and Ninian systems in the East Shetland Basin of the North Sea . The oil is landed at Sullom Voe terminal in Shetland . Oil production from Europe, Africa and Middle Eastern oil flowing West tends to be priced off this oil, which forms a benchmark </Li> <Li> Dubai - Oman, used as benchmark for Middle East sour crude oil flowing to the Asia - Pacific region </Li>

Where does the energy in petroleum fuel come from