Oil refineries are the industrial behemoths that transform crude oil into a myriad of products, are crucial to the global economy.

They are complex facilities that require massive investments and advanced technology.

Here are the top 10 largest oil refineries in the world:

1. Jamnagar Refinery, India
Owner: Reliance Industries
Location: Jamnagar, Gujarat, India
Capacity: 1.24 million barrels per day (bpd)

2. Paraguana Refinery Complex, Venezuela
Owner: Petróleos de Venezuela, S.A. (PDVSA)
Location: Paraguaná Peninsula, Venezuela
Capacity: 940,000 bpd

3. SK Energy Ulsan Complex, South Korea
Owner: SK Energy
Location: Ulsan, South Korea
Capacity: 900,000 bpd

4. Ruwais Refinery, United Arab Emirates
Owner: Abu Dhabi National Oil Company (ADNOC)
Location: Ruwais, United Arab Emirates
Capacity: 827,000 bpd

5. Yeosu Refinery, South Korea
Owner: GS Caltex
Location: Yeosu, South Korea
Capacity: 840,000 bpd

6. Onsan Refinery, South Korea
Owner: S-Oil Corporation
Location: Onsan, South Korea
Capacity: 669,000 bpd

7. Dangote Refinery, Nigeria
Owner: Dangote Industries
Location: Lagos, Nigeria
Capacity: 650,000 bpd

8. Galveston Bay Refinery, United States
Owner: Marathon Petroleum Corporation
Location: Texas City, Texas, United States
Capacity: 631,000 bpd

9. Beaumont Refinery, United States
Owner: ExxonMobil
Location: Beaumont, Texas, United States
Capacity: Approximately 630,000 bpd

10. Port Arthur Refinery, United States
Owner: Motiva Enterprises
Location: Port Arthur, Texas, United States
Capacity: 600,000 bpd

[TheNation]