Derek Flaman

Derek Flaman

Calgary: 403.776.3759
Fax 403.776.3800


LLB, 1994
Queen’s University

Bar Admissions

Alberta, 1996 Ontario, 1996


Derek’s practice focuses on commercial law in the energy sector, with an emphasis on M&A, joint ventures and project development in the oil and gas industry. His experience includes expertise in the acquisition and divestiture of upstream, midstream and downstream assets, onshore and offshore exploration and production matters, pipeline and transportation matters, as well as the marketing of energy and energy-related products. Derek’s clients are private equity funds, exploration and production companies, institutional lenders and midstream and downstream companies. Derek is a member of the firm's Executive Committee. 

Representative Work

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Chambers Canada—Leading lawyer in energy: oil & gas (transactional) (2016-2021)

Chambers Global—Leading lawyer in energy: oil & gas (transactional) (2013-2021)

The Legal 500 Canada—Leading lawyer in energy and natural resources: oil and gas (2019-2021)

Best Lawyers in Canada—Leading lawyer in energy law (2015-2021); oil and gas and mergers and acquisitions (2021)

Best Lawyers in Canada—2020 Energy Law Lawyer of the Year in Calgary

The Canadian Legal Lexpert Directory—Leading lawyer in corporate commercial law and in energy (oil & gas) (2013-2020)

Who’s Who Legal—Leading Canadian lawyer in energy (2013-2020)

Euromoney’s Guide to the World’s Leading Energy and Environment Lawyers—Leading lawyer (2018)

Expert Guides: The World’s Leading Experts in Energy Law—Leading Canadian lawyer (2013)


Canadian Oil & Gas


Memberships and Affiliations

Derek is a member of the Association of International Petroleum Negotiators and the Canadian Bar Association: Natural Resource Law and International Business Law Sections.