Ranking tables
Energy: Oil & Gas (Regulatory) | Global
Canada
Senior Statespeople
Band 1
Senior Statespeople
S Randall W Block KC
Borden Ladner Gervais LLP | Energy: Oil & Gas (Regulatory)2025 | Senior Statespeople |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.
Band 1
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1 Lars H Olthafer
Blake, Cassels & Graydon LLP | Energy: Oil & Gas (Regulatory)2025 | Band 1 |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.1 
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1 Terri-Lee OleniukBlake, Cassels & Graydon LLP | Energy: Oil & Gas (Regulatory)2025 | Band 1 |Terri-Lee Oleniuk is typically sought out for her regulatory expertise. Her environmental practice is complemented by her knowledge of energy regulation and Aboriginal law, particularly in relation to solar projects. She is based in Calgary.
Band 2
2 Alan Ross KCBorden Ladner Gervais LLP | Energy: Oil & Gas (Regulatory)2025 | Band 2 |Alan Ross has experience representing energy clients in national and provincial regulatory proceedings. His energy practice maintains a strong focus on hydrogen, carbon capture, energy transition technologies and sustainable infrastructure.
2 Brad Gilmour
Osler, Hoskin & Harcourt LLP | Energy: Oil & Gas (Regulatory)2025 | Band 2 |Based in Calgary, Brad Gilmour is well known for his experience in the environmental space, having guided a number of clients through investigations and site remediations.
2 Jeremy Barretto
Cassels Brock & Blackwell LLP | Energy: Oil & Gas (Regulatory)2025 | Band 2 |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.
2 Katie SlippBlake, Cassels & Graydon LLP | Energy: Oil & Gas (Regulatory)2025 | Band 2 |Based out of Calgary, Katie Slipp has a growing reputation for her counsel on regulatory proceedings and compliance matters in the oil and gas space.
2 Sander DuncansonOsler, Hoskin & Harcourt LLP | Energy: Oil & Gas (Regulatory)2025 | Band 2 |