Nexen Energy ULC

Nexen, a wholly-owned subsidiary of CNOOC Limited, is an upstream oil and gas company responsibly developing energy resources in some of the world’s most significant basins – including the UK North Sea, offshore West Africa, the Gulf of Mexico and Western Canada. We are strategically focused on three businesses: conventional oil and gas, oil sands and shale gas. Following the completion of the transaction with CNOOC Limited, we are also now focused on shale oil in the US.

A little bit of history

They started out as Canadian Occidental Petroleum Ltd. in 1971, and expanded throughout western Canada and the Gulf of Mexico in the 70s and 80s. In 1993, they struck black gold at Masila, Yemen, and expanded their holdings in North America through a series of acquisitions including Syncrude. They officially changed their name to Nexen in 2001. On February 25, 2013, Nexen became a wholly-owned subsidiary of CNOOC Limited, representing the largest acquisition to date between a Chinese and Canadian Company. CNOOC Limited is China’s largest producer of offshore crude oil and natural gas and one of the largest independent oil and gas exploration and production companies in the world.

Where you can start

We also offer summer and co-op positions from 4 to 16 months across all aspects of business. Entry level positions include New Grad in (NG) Engineering, NG Geologist, NG Geophysicist, NG Supply Chain, NG Human Resources, NG Finance/Accounting. They also offer four-month summer student positions across all aspects of their business. 


The largest office space is in our downtown Calgary office. The building features an open air glass atrium with lots of greenery and a water feature, a large conference centre equipped with cutting edge acoustic technology and high-definition video displays, and a new, state-of-the-art, fully equipped onsite fitness facility that is free for all employees. There are kitchens on every floor and the office is in close proximity to various cafeteria style shops and restaurant options. The office is also close to nature trails, biking, and green space, including Century Gardens and Prince's Island Park. Transit is nearby and onsite bike lock-up is available.


There are a lot of programs to take advantage of as a Nexen employee, from educational subsidies to health and fitness programs. They offer paid co-op and summer internship programs to university and college students throughout the year, and many of their work-term students end up with jobs. If your post-secondary program doesn't support work terms that run during the school year, they offer two summer work programs as well. The summer student employment program welcomes students from various disciplines to work at Nexen, and the technical summer student program is aimed specifically at helping engineering, geology, and geophysics majors gain valuable experience in their field of study. Once you're done school, you can take advantage of their New Grad Development program; it helps recent graduates matriculate seamlessly from school to work at Nexen through on-the-job training and assignments and one-on-one mentorship.

Application process
Our application deadlines for our internship programs are January, May and September of each year. Visit our careers page for more details.

Company Awards

  • Alberta's Top 70 Employers 2016

Nexen Energy ULC Reviews

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Review: Great Industry Experience

Company: Nexen Energy ULC Posted: Aug 23, 2018

I was tasked with valuable work and got to work on exciting new plays and assets. Useful experience that has helped me land positions with other...

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