Imports In 2022, Brunei imported $1.55M in Bituminous or oil shale and tar sands, becoming the 7th largest importer of Bituminous or oil shale and tar sands in the world. At the same year, Bituminous or oil shale and tar sands was the 356th most imported product in Brunei. Brunei imports Bituminous or oil shale and tar sands primarily from: Singapore ($1.54M) and China ($4.83k).