Crude oil futures, referred to as OilFut, are the most important oil futures. OilFut is the abbreviation of "OILFutures". There are four important crude oil futures contracts in the world: light and low-sulfur crude oil of NYMEX (West Texas Intermediate), high-sulfur crude oil futures contract of Dubai Commodity Exchange, Brent crude oil futures contract of London International Petroleum Exchange (ICE) and Singapore Exchange (SGX).