Saudi Aramco
Overview
 
Saudi Aramco officially the Saudi Arabian Oil Company, is the national oil company of Saudi Arabia
Saudi Arabia
The Kingdom of Saudi Arabia , commonly known in British English as Saudi Arabia and in Arabic as as-Sa‘ūdiyyah , is the largest state in Western Asia by land area, constituting the bulk of the Arabian Peninsula, and the second-largest in the Arab World...

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Saudi Aramco is the world's largest and most valuable privately-held company, with estimates of its value in 2011 to be $7 trillion USD.

Saudi Aramco has both the largest proven crude oil reserves, at more than 260 Goilbbl, and largest daily oil production. Headquartered in Dhahran
Dhahran
Dhahran is a city located in Saudi Arabia's Eastern Province, and is a major administrative center for the Saudi oil industry. Large oil reserves were first identified in the Dhahran area in 1931, and in 1935 Standard Oil of California drilled the first commercially viable oil well...

, Saudi Arabia, Saudi Aramco operates the world's largest single hydrocarbon network, the Master Gas System.
 
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