Ranking tables

Energy: Oil & Gas (Regulatory) | Canada

Nationwide - Canada

Oil and Gas covers all upstream and downstream work including exploration, infrastructure and pipeline developments and service contracts, royalties, licensing and operation agreements. It also includes corporate issues such as M&A, capital raisings, taxation and regulatory compliance.

All Lawyers profiles

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Senior Statespeople

  1. Randall W Block KC
    S
    Randall W Block KC
    Borden Ladner Gervais LLP
    Borden Ladner Gervais LLP | Energy: Oil & Gas (Regulatory)
    2025 | Senior Statespeople | 9 Years Ranked
    Randall Block KC maintains a highly respected litigation practice, which sees him act on regulatory matters within the oil and gas space. Based in Calgary, he frequently represents major energy clients before the Canada Energy Regulator in proceedings and disputes relating to construction, supply and environmental damages.
1

Band 1

  1. Bernard Roth
    1
    Bernard Roth
    Dentons Canada LLP
    Dentons Canada LLP | Energy: Oil & Gas (Regulatory)
    2025 | Band 1 | 8 Years Ranked
    Calgary-based Bernard Roth represents significant oil and gas clients before federal and provincial energy regulators in a wide array of mandates, including oil sands development and service agreements.
  2. Dennis Langen
    1
    Dennis Langen
    Stikeman Elliott LLP
    Stikeman Elliott LLP | Energy: Oil & Gas (Regulatory)
    2025 | Band 1 | 8 Years Ranked
    Highlighted for his background in engineering, Dennis Langen leads the firm's regulatory team out of Calgary. He routinely appears before regulators on oil and gas proceedings at the provincial and federal levels.
  3. Lars H Olthafer
    1
    Lars H Olthafer
    Blake, Cassels & Graydon LLP
    Blake, Cassels & Graydon LLP | Energy: Oil & Gas (Regulatory)
    2025 | Band 1 | 9 Years Ranked
    Lars Olthafer represents clients before energy regulators, demonstrating particular strength in land law matters arising from pipeline and project development. Utilising his background in engineering, the Calgary-based lawyer ably advises on a wide range of regulatory mandates arising from the oil and gas sector, including environmental compliance and First Nations consultation.
  4. Laura Estep
    1
    Laura Estep
    Dentons Canada LLP
    Dentons Canada LLP | Energy: Oil & Gas (Regulatory)
    2025 | Band 1 | 8 Years Ranked
    Laura Estep frequently appears before the Canada Energy Regulator and Alberta Utilities Commission, advising oil and gas clients on facilities applications and disputes. She is based out of Calgary.
  5. Martin Ignasiak
    1
    Martin Ignasiak
    Bennett Jones LLP
    Bennett Jones LLP | Energy: Oil & Gas (Regulatory)
    2025 | Band 1 | 9 Years Ranked
    Calgary-based Martin Ignasiak has significant expertise advising oil and gas clients on regulatory matters relating to pipelines and oil sands projects, offering additional strength in environmental and Aboriginal law.
  6. Terri-Lee Oleniuk
    1
    Terri-Lee Oleniuk
    Blake, Cassels & Graydon LLP
    Blake, Cassels & Graydon LLP | Energy: Oil & Gas (Regulatory)
    2025 | Band 1 | 7 Years Ranked
    Terri-Lee Oleniuk advises oil and gas sector clients on regulatory compliance, as well as on environmental and Aboriginal law, from her base in Calgary.
2

Band 2

  1. Alan Ross KC
    2
    Alan Ross KC
    Borden Ladner Gervais LLP
    Borden Ladner Gervais LLP | Energy: Oil & Gas (Regulatory)
    2025 | Band 2 | 7 Years Ranked
    Alan Ross KC is well regarded for his representation across provincial and federal regulatory mandates. He is particularly well versed in handling issues in the midstream sector and those pertaining to natural gas. He serves as the regional managing partner of the firm's Calgary office.
  2. Brad Gilmour
    2
    Brad Gilmour
    Osler, Hoskin & Harcourt LLP
    Osler, Hoskin & Harcourt LLP | Energy: Oil & Gas (Regulatory)
    2025 | Band 2 | 9 Years Ranked
    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.
  3. Jeremy Barretto
    2
    Jeremy Barretto
    Cassels Brock & Blackwell LLP
    Cassels Brock & Blackwell LLP | Energy: Oil & Gas (Regulatory)
    2025 | Band 2 | 2 Years Ranked
    Jeremy Barretto of Cassels Brock & Blackwell LLP has a robust reputation for his regulatory and indigenous law practice, advising a number of major oil and gas clients on compliance and administrative challenges.
  4. Katie Slipp
    2
    Katie Slipp
    Blake, Cassels & Graydon LLP
    Blake, Cassels & Graydon LLP | Energy: Oil & Gas (Regulatory)
    2025 | Band 2 | 5 Years Ranked
    She knows her practice area, has been very responsive at any time of the day and her input has been strategic and effective. She's a key resource to us in accomplishing some important milestones.
  5. Sander Duncanson
    2
    Sander Duncanson
    Osler, Hoskin & Harcourt LLP
    Osler, Hoskin & Harcourt LLP | Energy: Oil & Gas (Regulatory)
    2025 | Band 2 | 6 Years Ranked
    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.
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Up and Coming

  1. Sean Assié
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    Sean Assié
    Bennett Jones LLP
    Bennett Jones LLP | Energy: Oil & Gas (Regulatory)
    2025 | Up and Coming | 1 Years Ranked
    Sean Assié enjoys a burgeoning profile for his regulatory practice, with clients turning to him for his expertise in issues including rate setting, indigenous law and environmental work.