11.   Azerbaijan has produced oil for more than a century and most of it has flowed through the capital of Baku.

12.   Because of the lack of demand, refiners began switching from producing heating oil to gasoline earlier than usual this year.

13.   Blazer searches for and produces oil and gas in the U.S. Ashland still has some exploration operations in Nigeria.

14.   A heating oil crisis compelled some U.S. refineries to keep producing heating oil rather than shifting to gasoline.

15.   According to the story, a miracle happened, and the oil lasted for eight days, the time it took to produce more oil.

16.   But biotech companies are working on genetically modified crops to produce food oils lower in artery-clogging fats, or tomatoes rich in cancer-fighting substances.

17.   Chad will soon start producing oil in a World Bank-backed project.

18.   Chilly weather forced refineries to keep producing heating oil several weeks later than their normal switch to gasoline, raising prices further.

19.   Critics of the plan said it was unwise to begin producing oil from a strategic reserve at a time when oil is plentiful and cheap.

20.   Directional drilling allows oil to be produced miles away from surface facilities.