
Energy: Oil & Gas (Regulatory)
Canada Guide 2026 : Nationwide - Canada
Rankings

Ranked Individuals
Ranked Individuals
About
Provided by Blake, Cassels & Graydon LLP
Our Energy group has one of the leading energy practices in Canada, serving a comprehensive client base, including E&P companies, midstreamers, marketers, refiners, utility companies, facility and pipeline owners and operators, industrial users, industry financiers, and other stakeholders. We assist with all aspects of their business, from industry agreements to facility construction, collaborative arrangements and joint ventures, and mergers and acquisitions.
Those in the energy sector engage Blakes because of our strong technical expertise and experience advising on all aspects of the energy industry. The Blakes energy law practice has developed significant expertise in the area of power, including acquisitions and divestitures, financing and project development regarding transmission facilities, cogeneration facilities and power purchase agreements.
Blakes Energy Regulatory lawyers have far-reaching experience before key regulatory bodies, working on all phases of project applications and approvals, and with the regulatory aspects of commercial transactions. Our litigators regularly represent clients in virtually every forum across Canada, including the Supreme Court of Canada. We have extensive experience in domestic and international commercial arbitration under the rules of all major national and international arbitral institutions.
Chambers Review
Provided by Chambers
Work Highlights
Provided by Chambers
Blake, Cassels & Graydon assisted Pembina Pipeline in its CAD3.1 billion acquisition of Enbridge's joint venture interests in Alliance Pipeline, Aux Sable and NRGreen.
Strengths
Provided by Chambers
Blake is very responsive and quick to change approaches based on input from multiple business units.
Energy: Oil & Gas (Regulatory) respondentCanadaBlakes has demonstrated extreme flexibility in scaling up and down as the project demands without compromising the quality of their work.
Energy: Oil & Gas (Regulatory) respondentCanadaBlakes pairs deep industry knowledge with outstanding legal expertise, which drives the highest quality work and business outcomes.
Energy: Oil & Gas (Regulatory) respondentCanadaThe team's ability to use their experience and translate it into practical advice is a huge asset.
Energy: Oil & Gas (Regulatory) respondentCanadaThe firm gets excellent results and is very concise in its advice and arguments.
Energy: Oil & Gas (Regulatory) respondentCanada
Notable Practitioners
Provided by Chambers
Band 1 
Band 1 
Lars H Olthafer
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. Band 2 
Band 2 
Katie Slipp
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. Katie is a pleasure to work with. She is very adaptable to changing circumstances and is able to keep the business objectives in mind throughout the process.
Energy: Oil & Gas (Regulatory) respondentCanadaShe has a strong understanding of regulatory frameworks and great client service that is both proactive and responsive.
Energy: Oil & Gas (Regulatory) respondentCanadaKatie is excellent.
Energy: Oil & Gas (Regulatory) respondentCanada
Band 2 
Band 2 
Keith Byblow
Calgary-based oil and gas lawyer Keith Byblow advises on domestic and international mandates, including acquisitions, strategic partnerships and joint ventures. Keith is one of those deep thinkers who has the ability to deconstruct complex issues really quickly.
Energy: Oil & Gas (Regulatory) respondentCanadaKeith is an excellent technical lawyer and pairs this strength with commercial awareness to drive practical and effective solutions.
Energy: Oil & Gas (Regulatory) respondentCanadaKeith is a fantastic lawyer and his knowledge and industry experience are very beneficial.
Energy: Oil & Gas (Regulatory) respondentCanada
Band 3 
Band 3 
Chris Harris
Calgary-based Chris Harris operates a growing corporate practice in the oil and gas sector, acting on a wide array of M&A, as well as financing and joint ventures. He is excellent, practical and has great technical skills.
Energy: Oil & Gas (Regulatory) respondentCanadaHe knows our business in a way that allows him to advise on a range of implications.
Energy: Oil & Gas (Regulatory) respondentCanadaChris is super dedicated, hard-working and super timely.
Energy: Oil & Gas (Regulatory) respondentCanada
Band 4 
Band 4 
Christine Milliken
Christine Milliken has a wide-ranging transactional practice which sees her advising on M&A, joint ventures, insolvency and commercial work on behalf of corporate clients in the oil and gas sector. She's extremely strong all around, with great negotiation skills.
Energy: Oil & Gas (Regulatory) respondentCanadaChristine has strong client service skills and understanding of the business and critical legal issues.
Energy: Oil & Gas (Regulatory) respondentCanadaShe has excellent level of service and her advice is provided on a consistent basis.
Energy: Oil & Gas (Regulatory) respondentCanada
Ranked Individuals at Blake, Cassels & Graydon LLP (5)
Members
Provided by Blake, Cassels & Graydon LLP

Keith Byblow
View profile of Keith Byblow
Chris Harris
View profile of Chris Harris
Lars H Olthafer
View profile of Lars H Olthafer
Katie Slipp
View profile of Katie Slipp
Christine Milliken
View profile of Christine Milliken
Blake, Cassels & Graydon LLP has rankings in the following guides
Band 1
What success is built on
Chambers is the leading data and intelligence partner for the legal sector.