Petroleum
Petroleum is a naturally occurring, yellow-to-black liquid found in geological formations beneath the Earth's surface. It is commonly refined into various types of fuels. Components of petroleum are separated using a technique called fractional distillation i.e. separation of a liquid mixture into fractions differing in boiling point by means of distillation, typically using a fractionating column.
Petroleum Geoscience
Petroleum Geoscience is a quarterly peer-reviewed scientific journal published by the Geological Society of London and the European Association of Geoscientists and Engineers. It covers research in geoscience and technology associated with petroleum and reservoir engineering. According to the Journal Citation Reports, the journal has a 2011 impact factor of 1.161.