Natural-gas processing at ambient conditions (i.e., pentane and heavier) are called "natural-gas condensate" (sometimes also called "natural gasoline" or simply "condensate"). Natural gas is called "sweet gas" when relatively free of hydrogen sulfide; gas that does contain hydrogen sulfide is called "sour gas". Natural gas, or any other gas mixture, containing significant quantities of hydrogen sulfide, carbon dioxide or similar acidic gases, is called "acid gas." Raw natural gas can also come from methane deposits in the pores of coal seams, and especially in a more concentrated state of adsorption onto the surface of the coal itself. Such gas is referred to
Natural gas in Bolivia natural gas industry, President Evo Morales dramatically took over and occupied installations by using military force on May 1, 2005. Even though he stated that expropriations would not occur, the short period of six months given to renegotiate contracts put great pressure on the main foreign companies exploring for of natural gas in Bolivia. The state-owned Brazilian company Petrobrás, was among the most affected, since it was one of Bolivia’s largest foreign investors and controlled 14% of the country’s natural gas reserves, which in consequence created large concerns in the Brazilian government. Ultimately, negotiations took place and no further hostilities