Bolivar Oilfield: The annual output reaches10 million barrels.
Safaniya Oilfield: Located in the northeastern waters of Saudi Arabia, with proven reserves of 3.32 billion tons.
Rumaila Oilfield: Located in southern Iraq. The proven reserves are 2.6 billion tons, accounting for 60% of the national annual output.
Kirkuk Oilfield: located in northern Iraq, developed earlier. The proven reserves are 2.44 billion tons,
Romanshkin Oilfield: The reserve is 2.4 billion tons, and the annual output is about 654.38 billion tons, ranking second in Russia.
Samolotel oil field: It is the largest oil field in Russia, second only to the Gaval oil field in Saudi Arabia.
Zakum Oilfield: located in the central and western part of the United Arab Emirates, with proven reserves of 654.38+59 million tons.
Hasi Messaoud Oilfield: There are oil pipelines leading to ports such as Harthee and Bejaya for transportation.
These large oil fields basically represent the holding of the big companies behind them. You can find the relevant ones yourself.
Asian crude oil manufacturers have; PetroChina, Sinopec, ExxonMobil, South Korea SK, South Korea Ssangyong, South Korea GSCaltex, Japan Group, Shell, Indian Petroleum and Formosa Plastics of Taiwan Province Province.
World crude oil manufacturer: Saudi Aramco- Saudi Arabia
Iran National Oil Company-Iran
ExxonMobil Corporation-USA
Venezuela National Oil Company-Venezuela
China Petroleum and Natural Gas Group Company-China
BP-UK
Anglo-Dutch Shell Company-Britain and the Netherlands
Continental Phillips Corp.
Chevron-Total USA-France
Basically, these large oil companies are traders. You can find agents of various companies in the Yellow Pages. It's hard to sort out these things. I hope they can help you.