Recently, the US oil Intelligence Weekly (PIW) published the comprehensive ranking of the world's 50 largest oil companies in 2017. China's oil company, the world's third largest oil company, has been ranked among the top ten oil companies in the world for 17 years.

According to the latest rankings, in 2017 the world's top ten oil company Saudi Aramco, the Iran national gas company, Chinese Petroleum Corporation and the Venezuelan oil company, Exxon Mobil Corp, Holland Shell oil company, BP company, the Russian oil company, Gazprom, Total, respectively.
The top three oil companies in China have not changed much, and the momentum is still strong.
China's oil comprehensive ranking continued to remain third, with natural gas production rising from sixth to fourth, and a number of other indicators in the previous year.
Keep the list of the twentieth Sinopec, its natural gas production increased 3, refining capacity is still the biggest in the world.
China CNOOC ranked ranked 31.
Compared with last year, the number of top ten oil companies in the world has not changed considerably.
Saudi Aram is still top of the list for its rich oil reserves and production.
The Exxon Mobil Corp was affected by the decline in oil sands reserves in Canada, and the number of names fell to fifth from third in 2016.
The Royal Shell Companies in Holland rose from eighth to sixth for the acquisition of the British Gas Group (BG).
As a whole, the US shale oil companies have risen to a higher ranking, occupying 8 seats in the top 50, up from 6 last year. The state owned oil companies occupied 6 of the top 10.
The United States "oil Intelligence Weekly" is a journal of the American oil industry's energy information publishing group, according to the 6 main parameters of oil reserves and natural gas reserves, oil production, natural gas production, oil refining capacity and oil sales, the world's biggest oil companies in more comprehensive investigation, since 1987 30 consecutive released in the 50 largest oil company in the world rankings, with high authority in the petroleum industry.
This list is widely seen in the industry as the ultimate ranking of the oil industry, which can reflect the size of the oil companies.
Next, know the world's ten largest oil companies in 2017!
1. Saudi Arabia

As the only oil company in Saudi Arabia, Saudi Arabia has undoubtedly become the king of the oil company. Saudi Arabia has 65 thousand employees, the highest oil production company in the world. The company's production of crude oil for one year is about 3 times that of China's annual oil production.
Saudi Amy's total recoverable crude oil and condensate total reserves reach 260 billion 800 million barrels, the natural gas reserves reach 298 trillion and 700 billion cubic feet, and the refining capacity reaches 1.5 billion tons.
2. Iran national gas company

Iran national gas company ranks second in the world after Saudi Aramis. But in fact, the company's remaining recoverable oil and gas reserves are up to 490 billion tons, ranking first in the world. This is largely due to Iran's rich natural gas reserves.
Despite its abundant resources, Iran oil failed to exploit these resources due to lack of investment and technology. Its annual output of oil is less than half of that of Saudi Arabia. Therefore, Iran oil is also actively seeking cooperation with foreign oil companies.
3. PetroChina

CNPC not only ranked third in the world, but also the only company in China to enter the world's top ten, with 1 million 400 thousand employees.
PetroChina business covers not only oil and gas processing, but also technology services, engineering construction, oil and gas equipment and pipeline business. It is one of the most powerful oil companies in the world.
The current oil and gas production of China's oil and gas reached 2.6 billion tons, ranking fifth among the ten major oil companies. PetroChina not only covers most of China's domestic oil and gas production business, but also has oil and gas exploration projects in over 30 countries abroad, and its overseas oil and gas production equivalent output is as high as 1.5 billion tons.
4. Venezuelan oil company

The Venezuelan oil company has the world's largest reserves of crude oil, up to 420 billion tons. But under the shock of a plunge in oil prices, the lack of investment led to the company's oil production falling to its lowest level in 30 years in 2016.
At present, the annual output of oil is about 1.3 billion tons, and about 85% of the oil is used for export. Despite the current financial crisis, it has to admit that the company has a huge resource potential.
Exxon Mobil 5.

ExxonMobil is still the world's largest international oil company, with 71 thousand employees now. Its current oil and gas annual output is about 2.02 million tons. ExxonMobil's refining capacity is ranked first among international oil companies, with an annual oil refining capacity of about 2.1 million tons.
ExxonMobil is not only in the world, but also the most popular company for unconventional oil and marine oil and gas exploitation. ExxonMobil is also actively involved in the development of shale gas in Argentina, as well as shale oil and gas operations in the United States.
6. Holland Royal Shell oil company

Shell has expanded a lot after its acquisition of BG, which has risen 2 in the world this year.
Shell has 92 thousand employees and has business in more than 70 countries around the world. The annual production of Shell's oil and gas has also increased to 1.8 million tons, with the remaining oil and gas reserves of 18 million tons.
Shell is one of the most active companies in the world to carry out the global gas and LNG strategy. Its LNG volume of liquefaction reached 30 million 900 thousand tons in the year, ranking first in the world. In addition, Shell has more than 43 thousand gas (gas) stations, and its number is the world's first.
7.BP
At present, BP has 75 thousand employees, with annual oil and gas equivalent of 1.6 million tons, with remaining oil and gas reserves of about 24 billion tons, in 72 countries in the world.
The future direction of BP is natural gas as the core, and it is in the stage of rapid development. It is reported that BP will increase its annual oil and gas production by 30% by 2021, while 75% of the new projects are all natural gas projects.
8. Russian oil company

Russian oil company is Russia's largest crude oil producer, with 296 thousand employees. This is a mixed oil company with both the Russian government and non-governmental capital holdings.
The annual production of oil and gas of Russian oil company reached 2.65 million tons, with the remaining oil and gas reserves of 186 million tons. The company is also the largest supplier of crude oil imported from China.
9. Russian Petroleum and Natural Gas Industry Corporation

The Russian Petroleum and Natural Gas Industry Corporation has been established for only 24 years, but it has become the largest natural gas company in the world and has 460 thousand employees. The company controls 72% of Russia's natural gas resources, with an annual oil and gas production of up to 4 million tons.
The annual production of natural gas in Russian Petroleum and Natural Gas Corporation accounts for about 11% of the world's total annual output. It is the largest supplier of natural gas in Europe, and is also one of the major suppliers of natural gas in China.
10. Total

Total and the wide coverage of business, with operations in more than 130 countries around the world, currently has a staff of 98 thousand people. At present, the annual production of oil and gas is 1.2 million tons, and annual refining and chemical production capacity reaches 1 million tons.
Total is one of the low carbon energy activist, expanding business in the field of renewable energy and natural gas. Total in 2017 to $1 billion 500 million acquisition of Engie LNG assets, ranked as the world's second largest producer of LNG.
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The contents of this article are as follows:
Securities Daily, oil link, “ process industry ”