most probably Saudi Arabia
Until many of the discoveries and inventions had been made oil was impossible to drill for and to get to. Up until the early 1900's the oil couldn't be removed and in some cases found.
Gujrat
Offshore drilling rigs can reach deep oil reservoirs that lie below the sea floor. Initially, our oil came from discoveries on land, however in search of new oil fields, it was necessary to drill wells offshore. Oil companies have made very large oil discoveries in deep water regions in the Gulf of Mexico. See related link.
It is difficult to provide an exact amount of crude oil available worldwide, as estimates vary. However, it is believed that there are trillions of barrels of proven oil reserves globally, with more discoveries continuously being made. The total amount of crude oil in the world is constantly changing due to ongoing extraction, consumption, and new discoveries.
Gold and Oil.
North Sea
Antony Lucas struck oil at Spindletop on January 10, 1901. This event marked the beginning of the Texas oil boom and is considered one of the most significant discoveries in the history of the oil industry. The gusher produced an immense amount of oil, leading to a rapid expansion of the petroleum industry in the region.
we bought it from russia and made millions off of oil and gold
he founded standard oil and made millions
Texas has the most oil.
The deep south regions of the United States is a growing area making significant oil discoveries at a rapid rate. Most of the area is warm and humid year-round.
Alaska state in the USA has the greatest oil production. source http://www.statemaster.com/graph/ene_pet_pro-energy-oil-production