Petroleum industry in Nigeria to transport the crude oil. Also because of the lack of highly productive fields, money from the jointly operated (with the federal government) companies is constantly directed towards petroleum exploration and production. Nigeria's petroleum is classified mostly as "light" and "sweet", as the oil is largely free of sulphur. Nigeria is the largest producer of sweet oil in OPEC. This sweet oil is similar in composition to petroleum extracted from the North Sea. This crude oil is known as "Bonny light". Names of other Nigerian crudes, all of which are named according to export terminal, are Qua Ibo, Escravos blend,
Light River (South Australia) Light. The river reaches its mouth and enters the Gulf St Vincent through a mangrove estuary. The river descends over its course. The Light River has an expansive catchment within mainly undulating hills, much cleared since European settlement for farming and grazing purposes. There are no geological features that would permit a significant dam or reservoir. The noteworthy tributaries, by descending elevation, are Tothill Creek, Julia Creek, Pine Creek, St Kitts Creek, and the Gilbert River. The latter is a major tributary, merging into the Light River just below Hamley Bridge. The indigenous name for the river is Yarralinka. The