Energy (Oil and Gas)


Osler’s top tier Calgary-based team of more than 50 lawyers has experience in every aspect of the oil and gas industry and has advised clients on some of the most complex and significant energy projects and transactions in the world. We are recognized for the superior counsel we provide to both our domestic and international energy clients. With several of our legal professionals ranked as internationally leading energy lawyers, our clients benefit from our technical expertise, as well as our commercial know-how.

Strategy and Innovation

The successful and timely execution of complex energy undertakings – ranging from conventional exploration and development, to oil sands and offshore development, to major projects such as pipelines and storage facilities – hinges on highly sophisticated strategy. Osler lawyers have the expertise and talent to provide invaluable assistance to our clients in formulating and executing such strategies as well as providing sound legal advice. We have developed a superior command of all aspects of energy projects and transactions and are able to anticipate and assist in navigating the complexities and issues with confidence and precision.


Our expertise is comprehensive and includes the following areas:

  • Infrastructure development
  • Mergers, acquisitions, divestitures, and complex joint ventures
  • LNG, Pipeline terminal, pipeline, plant and other facilities
  • Oil sands development
  • International energy transactions
  • Shale gas and coalbed methane joint ventures
  • Onshore and offshore exploration and development projects
  • Transportation and storage
  • Upgrading and refining
  • Downstream distribution
  • Climate change and environmental impact
  • Aboriginal rights, consultation and agreements
  • Project finance
  • Corporate finance

A North American Firm with a Local Approach

In all of our work, we bring industry knowledge, long-term industry relationships, an appreciation of broad strategic issues, and an attention to detail that can help achieve a successful outcome. We know that in a field as complex as energy, true value comes as much from understanding the client’s business and their people, as from a knowledge of the law.

Osler advises corporate leaders on their most critical matters. With almost 400 lawyers based in Calgary, Toronto, Montréal, Ottawa and New York, Osler has a cross-border presence that is one of our differentiating strengths and enables us to represent U.S. and international companies doing business in Canada. We are especially well positioned to advise companies looking to undertake major projects or make acquisitions or divestitures in the Canadian energy industry.

Related Expertise
  • Special Committee of the Board of Directors of Legacy Oil + Gas Inc.

    Special Committee of the Board of Directors of Legacy Oil + Gas Inc. in connection with activist shareholder matters and Legacy’s $1.5 billion acquisition by Crescent Point Energy Corp.

  • Kanata Energy Group Ltd.

    Kanata Energy Group Ltd. in its $54 million joint venture arrangement with Cequence Energy Ltd. to acquire a 50% share of the Simonette gathering and processing facility in Alberta and to provide midstream services.

  • Phoenix Energy Holdings Limited,

    Phoenix Energy Holdings Limited, a Canadian subsidiary of PetroChina, on its partnership with TransCanada Corporation and its affiliates to construct, own and operate the Grand Rapids Pipeline System and its commitment to ship on the system.

  • Nexen Inc.

    Nexen Inc. in the sale of a 40% working interest in its shale gas assets in the Horn River, Cordova and Liard basins in northeast British Columbia to a consortium led by INPEX Gas British Columbia Ltd. and in the creation of a strategic partnership to develop those shale gas assets.

  • Apache Corp.

    Apache Corp. on Canadian aspects of their acquisition of a partnership and corporation holding oil and gas exploration and production properties located in Western Canada, from BP Canada Energy.

  • KM LNG Operating General Partnership and Apache Canada Ltd.

    KM LNG Operating General Partnership and Apache Canada Ltd. in all aspects of its acquisition, joint ownership, development, procurement and construction of the proposed Kitimat LNG Project and Pacific Trail Pipelines.

  • BG International

    BG International on its acquisition of certain oil and gas interests offshore Trinidad and Tobago from Canadian Superior Energy Inc.

  • ConocoPhillips

    ConocoPhillips in their agreement to sell their 9% interest in Syncrude to subsidiaries of Sinopec International Petroleum Exploration and Production Company.

  • China Investment Corporation

    China Investment Corporation in connection with its purchase of a 5% interest in the equity of Penn West Energy Trust and its agreement with Penn West to form a partnership and make an investment to develop certain bitumen assets located in Alberta. 

  • PetroChina

    PetroChina in its development of the MacKay River Commercial oil sands project, including all aspects of the design, engineering, procurement and construction of the Central Plant and related pipelines and facilities, and in its development of the Dover oil sands project in a joint venture with Athabasca Oil Sands Corp.

Osler is ranked as top tier for Energy: Oil & Gas by Chambers Global: The World’s Leading Business Lawyers 2014 which notes that "[Osler is] the best of the best for technical ability."  The firm is ranked by The Canadian Legal Lexpert Directory 2014 among the best in Canada for its work in Energy: Oil & Gas, with a number of leading practitioners in this area. Osler was recently named “Oil & Gas Law Firm of the Year – Canada” by the 2013 Acquisition International M&A Awards. In addition, the group’s Co-Chair Janice Buckingham, was recognized by Lexology Client Choice Awards 2013 (formerly ILO Client Choice Awards) as an individual recipient for Energy & Natural Resources in Alberta and as the overall Canadian recipient for Energy & Natural Resources.