Chinese President Xi Jinping called Saudi Arabia's King Salman on Friday, condemning the attack on two oil installations, that took place last weekend.
A swarm of explosive drones las Saturday on the world’s largest oil processing plant in Saudi Arabia.
After the assault, for which Houthi rebels in Yemen claimed responsibility, major fires swallowed the Abqaiq processing plant and the Khurais oil field.
Over the previous year, oil fields and pipeline in Saudi Arabia have been the target of rebel assaults, often using single drones, but analysts said it seemed to be the largest and most successful to date.
Saudi Aramco is a Saudi Arabian national petroleum and natural gas company based in Dhahran, Saudi Arabia.
It is one of the largest companies in the world by revenue, and according to accounts seen by Bloomberg News, the most profitable company in the world.
It has both the world's second-largest proven crude oil reserves, at more than 270 billion barrels (4.3×1010 m3) and second-largest daily oil production.
Saudi officials have backed an official figure of $2 trillion for Saudi Aramco's value. The company's financial data were leaked in April 2018, and according to Bloomberg's analysis, the company could be valued at $1.2 trillion, a significantly lower sum.
The company operates the world's largest single hydrocarbon network, the Master Gas System. Its 2013 crude oil production total was 3.4 billion barrels (540,000,000 m3), and it manages over one hundred oil and gas fields in Saudi Arabia, including 288.4 trillion standard cubic feet of natural gas reserves.
It operate the Ghawar Field, the world's largest onshore oil field, and the Safaniya Field, the world's largest offshore oil field.
On 9 April 2019, Aramco has raised $12 billion of bonds, where its first international bond issue has received more than $100 billion in orders from foreign investors which breaks all records for a bond issue by an emerging market entity.