Sentences with phrase «thick heavy crude oil»

Saudi Arabia, Kuwait and other Middle Eastern nations begin costly and energy - intensive attempts to tap their vast reserves of molasses - thick heavy crude oil.

Not exact matches

Oil well operators used more than 80 billion gallons of water in California last year in «enhanced» oil recovery techniques such as steam injection and water flooding, which help bring heavier, thicker crude to the surfaOil well operators used more than 80 billion gallons of water in California last year in «enhanced» oil recovery techniques such as steam injection and water flooding, which help bring heavier, thicker crude to the surfaoil recovery techniques such as steam injection and water flooding, which help bring heavier, thicker crude to the surface.

The study, published Wednesday in the journal Nature, showed that the production of tar sands and other heavy oil — thick, highly viscous crude oil that is difficult to produce — are a major source of aerosols, a component of fine particle air pollution, which can affect regional weather patterns and increase the risk of lung and heart disease.

The oil extracted is a thick, sticky form of crude known as bitumen, which emits more carbon than conventional oil when burned and the mining itself has a heavy environmental footprint, heavily opposed by climate and environmental activists.