Crude oil contains much more than just carbon and hydrogen; it also contains nitrogen, helium, and other gasses , as well as relatively small amounts of sulfur, heavy metals, and other impurities.

The crude oil price escalation and de-escalation formula for change in API gravity may result in payment of a higher price for a crude oil as a result of the increase in API gravity, when the ...

CALGARY, ALBERTA--(Marketwire - Oct. 21, 2012) - Petrominerales (PMG.TO)(BVC:PMGC) is pleased to announce a light-oil discovery in two zones of our Sheshea-1X well in the Ucayali Basin of Peru. The ...

Nigeria has cemented its role as a vital energy partner for Senegal, supplying the country’s only refinery in Dakar with Erha ...

As defined by the U.S. Geological Survey (USGS), heavy oil is a type of crude oil characterized by an asphaltic, dense, viscous nature (similar to molasses), and its asphaltene (very large molecules ...

EIA: higher crude density drove part of U.S. crude oil output growth last year. Texas accounted for 57% of the total production of crude oil with an API gravity between 30.1 and 40.0 degrees in the ...