Department profile
Energy: Oil & Gas
Canada Guide 2026 : Nationwide - Canada
Rankings
Ranked Individuals
Ranked Individuals
About
Provided by Osler, Hoskin & Harcourt LLP
Osler’s Oil & Gas Group has worked with leading participants in every aspect of the sector on business-critical projects and transactions from coast to coast, and in the process has developed market leading expertise in structuring complex joint ventures, completing strategic mergers and acquisitions, undertaking high profile regulatory proceedings, and developing and project financing major infrastructure projects. Clients include multi-national E&P companies, infrastructure companies, private equity and pension funds, state-owned enterprises, mid-market energy and midstream companies, renewable energy developers, pipeline companies, and multi-party consortiums.
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Work Highlights
Provided by Chambers
Osler, Hoskin & Harcourt advised Westbrick Energy on its CAD1.1 billion acquisition by Vermilion Energy.
Strengths
Provided by Chambers
Commercially, the lawyers are practical and supportive.
Energy: Oil & Gas respondentCanadaOsler has a deep understanding of the industry and deep expertise in various areas of the law.
Energy: Oil & Gas respondentCanadaOsler has continually provided opinions that have helped us to manage difficult situations.
Energy: Oil & Gas respondentCanadaOsler has deep knowledge of our space, prompt engagement and very good availability on short notice.
Energy: Oil & Gas respondentCanada
Notable Practitioners
Provided by Chambers
Band 1 
Band 1 Craig Spurn
Craig Spurn acts out of the firm's Calgary office and has wide-ranging expertise in oil and gas M&A and commercial matters arising from the energy sector. He is noted for his skill in representing natural gas and oil clients in procurement and joint ventures. He's very thoughtful and has great industry experience.
Energy: Oil & Gas respondentCanadaHe has very strong legal knowledge paired with a very strong commercial awareness.
Energy: Oil & Gas respondentCanadaCraig has always been able to provide solid and creative solutions for complex problems and is able to break down complex issues so they can be explained.
Energy: Oil & Gas respondentCanadaHe is very practical, an excellent negotiator and is a trusted adviser.
Energy: Oil & Gas respondentCanada
Band 1 
Band 1 Sander Duncanson
Based in Calgary, Sander Duncanson is noted for his robust oil and gas regulation practice, representing oil and gas clients before national and provincial regulators in facilities applications and environmental assessments. Sander is an excellent lawyer and great thought partner to the business.
Energy: Oil & Gas respondentCanadaHe is phenomenal. We inherently trust him in the regulatory space.
Energy: Oil & Gas respondentCanadaSander is a strong advocate for his clients and immerses himself in the topics at hand, while keeping the objectives of the business in mind.
Energy: Oil & Gas respondentCanada
Band 2 
Band 2 Brad Gilmour
Brad Gilmour provides expertise in energy and environmental regulation, covering matters including facilities applications and compliance. He acts on behalf of private and public organisations out of the firm's Calgary office.
Brad is an amazing regulatory lawyer.
Energy: Oil & Gas respondentCanada
Band 2 
Band 2 George Antonopoulos
Based in the firm's Calgary office, George Antonopoulos handles a wide array of M&A, asset sales and project developments in the oil and gas sector. He is very thorough, knows the market and is able to give advice on what is normally done in situations. He has a very thorough knowledge of the oil and gas industry.
Energy: Oil & Gas respondentCanadaGeorge is one of the strongest commercial lawyers in the city.
Energy: Oil & Gas respondentCanadaHe is a very good lawyer who is very thoughtful and pragmatic
Energy: Oil & Gas respondentCanada
Band 2 
Band 2 Simon Baines
Simon Baines is esteemed for the breadth of his experience across transactional mandates in the oil and gas sector, as well as advising on the commercial aspects of projects and facilities development. He is based out of the firm's Calgary office. Simon is knowledgeable, practical and has great judgement.
Energy: Oil & Gas respondentCanadaSimon has great industry knowledge.
Energy: Oil & Gas respondentCanada
Band 2 
Band 2 Vivek Warrier
Calgary-based Vivek Warrier is a widely respected oil and gas lawyer sought after for his handling of project development and M&A within the petroleum and natural gas industry, including on LNG matters. There are very few lawyers in Canada as qualified and client-focused as Vivek Warrier. He is a leader in the field.
Energy: Oil & Gas respondentCanadaVivek is great to work with and he has strong commercial acumen.
Energy: Oil & Gas respondentCanada
Ranked Individuals at Osler, Hoskin & Harcourt LLP (6)
Nationwide - Canada
Sander Duncanson
Energy: Oil & Gas (Regulatory)
View profile Brad Gilmour
Energy: Oil & Gas (Regulatory)
View profile Craig Spurn
Energy: Oil & Gas (Transactional)
View profile George Antonopoulos
Energy: Oil & Gas (Transactional)
View profile Simon Baines
Energy: Oil & Gas (Transactional)
View profile Vivek Warrier
Energy: Oil & Gas (Transactional)
View profile
Members
Provided by Osler, Hoskin & Harcourt LLP
Vivek Warrier
View profile of Vivek WarrierCraig Spurn
View profile of Craig SpurnBrad Gilmour
View profile of Brad GilmourSimon Baines
View profile of Simon BainesGeorge Antonopoulos
View profile of George AntonopoulosSander Duncanson
View profile of Sander Duncanson
Osler, Hoskin & Harcourt LLP has rankings in the following guides
Band 1
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