Oil and gas in Canada

Bennett Jones LLP

Few firms can equal Bennett Jones LLP‘s breadth and depth of experience in the oil and gas sphere. Equally adept at transactional and regulatory matters, the group enjoys close links with both private and public sector clients involved in the full range of upstream, midstream and downstream oil and gas projects. The firm’s deep bench is led nationally by Shawn Munro, who has a focus on the regulatory and environmental aspects of oil and gas matters, and Vivek Warrier, who specializes in energy transactions. Warrier recently advised Heritage Royalty on the C$728m sale of certain Western Canadian royalty assets to PrairieSky Royalty. Among the other senior names to note, Calgary managing partner Patrick Maguire is recognized for his expertise in commercial transactions, while Brad Gilmour , Loyola Keough and Lawrence Smith KC are seasoned regulatory counsel. Luke Morrison is a thriving up-and-coming transactional specialist. Donald Greenfield recently retired. All named lawyers are based in Calgary.

Practice head(s):

Shawn Munro; Vivek Warrier

Work highlights

  • Advised Heritage Royalty on its C$728m sale of certain Western Canadian royalty assets, including 1.9 million acres of royalty lands throughout Alberta, Saskatchewan and Manitoba, to PrairieSky Royalty.
  • Acted for Canadian Natural Resources Limited, on its own and through a subsidiary, on its multimillion-dollar acquisition of Petronas Sasol Montney Partnership, from Petronas Energy Canada Ltd and Sasol Investment Company (Pty) Ltd.
  • Advised SECURE Energy Services on its C$2.3bn acquisition of all of the issued and outstanding common shares of Tervita.

Blake, Cassels & Graydon LLP

National powerhouse Blake, Cassels & Graydon LLP fields a standalone oil and gas practice, which provides full-service advice to domestic and global energy companies. A top choice for transformational M&A and corporate finance matters, the group also brings to bear strong expertise in project development, operational issues and regulatory work. Transactional partners Keith Byblow and Christine Milliken jointly lead the team, with Calgary managing partner Ben Rogers providing core support. Talented next-generation partner Chris Harris is also a key contact for energy deals and recently advised Shell Canada Energy on the C$900m sale of its Duvernay shale light oil assets to Crescent Point Energy. The group’s regulatory capability is equally extensive, with senior partner Lars Olthafer particularly sought after for his experience in regulatory approvals processes connected to large-scale LNG projects. Terri-Lee Oleniuk and Katie Slipp also specialize in regulatory work, while Mungo Hardwicke-Brown has broad transactional experience. All named attorneys are based in Calgary.

Key clients

TC Energy Corporation

Suncor Energy Inc.

Shell Canada Energy

Ovintiv Inc.

Pembina Pipeline Corporation

Stittco Utilities Man. Ltd.

Canadian Pacific Railway Company

Trans-Mountain Pipeline ULC

PrairieSky Royalty

Pembina Kinder Morgan Canada (Jet Fuel) Inc.

Work highlights

  • Advised Shell Canada Energy on the sale of its Duvernay shale light oil assets to Crescent Point Energy Corp (CPEC) for a total consideration of C$900m, including C$700m in cash and 50 million shares in CPEC.
  • Advised TC Energy Corp on its sale of a 65% equity stake in the Coastal GasLink Pipeline Project to KKR and AIMCo, and the concurrent credit agreement providing non-recourse project-level financing to fund the majority of construction costs for the project.
  • Represented Trans Mountain Pipeline ULC in connection with the land right of entry and utility crossing approval processes administered by the National Energy Board relative to the C$7.4bn expansion of the Trans Mountain Pipeline system.

Burnet Duckworth & Palmer LLP

A key player in all facets of oil and gas law, Calgary-based Burnet Duckworth & Palmer LLP enjoys close relationships with explorers, developers, producers and infrastructure owners and operators, also acting for lenders and investors on energy transactions. The team, which has a long-established record in the oil and gas sphere, continues to gear up to meet the new demands of the market and 2022 saw Brittney LaBranche promoted to partner, while Aaron Rogers returned to the firm as senior counsel, following a ten-year stint at Inter Pipeline. Newly appointed managing partner Alicia Quesnel is one of the most revered specialists in the sector; she recently teamed up with department head Carolyn Wright to advise the Alberta Petroleum Marketing Commission on the termination of the Alberta Government’s C$3.7bn crude-by-rail initiative for the transportation of Alberta crude oil by rail car to markets in North America. Other recommended names include Evan Dixon, who specializes in administrative, regulatory and environmental law-related matters, and energy-focused associate Natasha Wood.

Practice head(s):

Carolyn Wright

Key clients

Alberta Petroleum Marketing Commission (APMC)

Greenfire Acquisition Corporation

Obsidian Energy Ltd.

Ovintiv Canada ULC

Perpetual Energy Inc.

Reserve Royalty Management Inc. and Reserve Royalty Income Trust

Topaz Energy Corp.

Tourmaline Oil Corp.

TransAlta Corporation

Work highlights

  • Advised the Alberta Petroleum Marketing Commission on the termination of the Alberta Government’s 120,000 bbls/d, C$3.7bn crude-by-rail initiative for the transportation of Alberta crude oil by rail car to markets in the US and Canada.
  • Advised TransAlta Corporation on the C$255m sale by TransAlta Corporation, and its partner Tidewater Midstream and Infrastructure, of the Pioneer Pipeline to ATCO Gas and Pipelines.
  • Acted for Greenfire Acquisition Corporation on its reorganization, and also on its subsequent acquisition of all of the shares of Japan Canada Oil Sands Limited, which included a 75% working interest in the Hangingstone facility in Alberta.

Osler, Hoskin & Harcourt LLP

Osler, Hoskin & Harcourt LLP is widely admired for its consistent involvement in Canada’s major oil and gas transactions, across all industry segments. The team also packs a punch on the non-transactional side, where it fields specialists in regulatory, environmental, Indigenous and land-related matters. Recent highlights include acting for Suncor Energy on a series of commercial agreements and arrangements involving its takeover of day-to-day operations at the Syncrude oil sands joint venture, a matter led by chair Janice Buckingham who worked in tandem with the corporate department. Other key names on the transactional side are Simon Baines and Craig Spurn. On the regulatory front, Shawn Denstedt KC is widely revered for the breadth of his expertise, which covers provincial, federal and international matters. Martin Ignasiak and Toronto-based Richard King co-chair the regulatory, environmental, Indigenous and land group and are also recommended. Named practitioners are based in Calgary unless otherwise stated.

Other key lawyers:

Shawn Denstedt KC; Simon Baines; Craig SpurnSander Duncanson; Richard King

Work highlights


    A latecomer to Calgary compared it its top-tier peers, Torys‘ has worked to establish an impressive record locally, and internationally, since its arrival in the market a decade ago. Primarily recognized for its transactional prowess in oil and gas, the firm also has the project development and regulatory expertise to handle all aspects of energy work. Among its recent highlight matters, department head Derek Flaman advised Cenovus on the C$420m sale of its retail fuel network to Parkland Corporation and Federated Co-operatives Limited. Elsewhere, Chris Christopher, highlighted as a ‘go-to lawyer for oil and gas transactions‘, paired up with the wider corporate group to advise AltaGas on the proposed C$1bn sale of its Alaskan utilities business to TriSummit Utilities. Increasingly prominent younger partner Peter Danner is also recommended. All named attorneys are based in Calgary.

    Practice head(s):

    Derek Flaman


    ‘Regardless of who we deal with at Torys, the quality of advice and services provided have been consistently impressive.’

    ‘Our relationship is treated internally like a partnership in the success of our business and we rely on them for everything from global M&A support to financial reporting and Canadian securities regulation.’

    Highly regarded by both energy companies and peers in Calgary, Chris Christopher is a go-to lawyer for oil and gas transactions.’

    ‘Peter Danner is an exceptional lawyer that shows strong understanding of the complex commercial aspects of our business and finds creative and applicable legal solutions for our needs.’

    Michael Pedlow is an exceptional securities lawyer that has been instrumental in our evolution as a publicly traded company.’

    Key clients

    Inter Pipeline Ltd.

    Vermilion Energy Inc.

    Cenovus Energy Inc.

    Tenaz Energy Corp.

    Peters & Co. Ltd.

    Parkland Corporation

    Kohlberg Kravis Roberts & Co.

    Work highlights

    • Advising Inter Pipeline on its acquisition of the Milk River pipeline system from Plains Midstream Canada ULC, a wholly owned subsidiary of Plains All American Pipeline, LP, in exchange for its 100% ownership interest in the Empress II and 50% ownership interest in the Empress V straddle plants.
    • Advising Vermilion on its proposed $434m acquisition of Equinor Energy Ireland Limited, which owns a 36.5% interest in the Corrib Natural Gas Project in Ireland.
    • Advising Cenovus in connection with the sale of its retail fuel network to Parkland Corporation and Federated Co-operatives Limited.


    Dentons has enjoyed a strong year, which saw the team act on a well-balanced mix of regulatory, commercial and corporate work. Leveraging strong relationships with both domestic and global energy companies, the group’s representation of long-standing client Enbridge stands out, and it also provides ongoing advice to the Canadian energy giant on commercial and regulatory matters connected to the Enbridge Mainline system. Notably, all three department heads lead the Enbridge work, with sector specialist Bernard Roth providing regulatory support, while George Antonopoulos and counsel Michael Hurst handle commercial matters. Regulatory partner Laura Estep is also recommended. The Calgary-based group was recently boosted with the hire of natural resources-focused corporate partner Chris Wolfenberg from Fasken.

    Key clients

    Enbridge Inc.

    Pembina Pipeline Corporation

    Kingston Midstream (formerly Tundra Energy Marketing Limited)

    Cenovus Energy Inc. (combined with Husky Energy Inc. in 2020)

    Enhance Energy

    BP Canada Energy Group ULC

    Suncor Energy Inc.

    PETRONAS Canada


    Saturn Oil and Gas

    Work highlights

    • Advising Enbridge on all commercial legal work and providing significant regulatory support in connection with the Enbridge Mainline system; from common carriage to contract carriage.
    • Representing Kingston Midstream Westspur Limited on an application for leave to appeal a decision of the Canada Energy Regulator to the Federal Court of Appeal.
    • Advising the Special Committee of the Board of Directors of Inter Pipeline on its response to an unsolicited takeover bid by Brookfield Infrastructure Partners LP, involving an auction process that concluded with Brookfield increasing its offer at a valuation of approximately C$15bn.

    Norton Rose Fulbright

    A popular choice for cross-border energy M&A, Norton Rose Fulbright‘s Calgary office frequently teams up with its partners across the globe to staff multi-jurisdictional oil and gas matters. Closer to home, the firm is a key participant in work involving Canada’s LNG sphere, the Alberta oil sands and midstream infrastructure transactions, among other areas. Robert Froehlich, who leads the business group in Calgary, is highly regarded for oil and gas transactions; oil and gas head Ryan Keays and experienced partner Wayne Fedun are also key names for energy deals. On the regulatory front, Don Davies KC is a sector specialist.

    Practice head(s):

    Ryan Keays

    Other key lawyers:

    Don Davies KC; Wayne Fedun; Robert Froehlich; KayLynn Litton


    ‘We have worked with Norton Rose Fulbright Canada LLP for over two decades. Their energy practice is reliable in providing sound advice on any energy deals we conduct within Canada.’

    ‘We have found them helpful in transactions where regulatory approval is complex related to asset liabilities. These situations require ongoing work with the counterparty and the regulator in combination with ancillary commercial issues.’

    ‘KayLynn Litton is a very experienced practitioner and works very efficiently. She’s hands on and provides great context on market practice to contextualize our negotiations.’

    Key clients

    i3 Energy PLC

    Enbridge Pipelines Inc.



    Crescent Point Energy Corp.

    Imperial Oil Limited

    Paramount Resources Ltd.

    Pieridae Energy Ltd.

    Black Swan Energy Ltd.

    Tidewater Midstream and Infrastructure Ltd.

    Keyera Corp.

    Wolf Pipeline Inc. and its portfolio companies (Wolf Midstream, Wolf Carbon Solutions Inc., and Access Pipeline Inc.).

    Tervita Corporation

    Vancouver Airport Fuel Facilities Corporation

    Vancouver Airport

    Seaspan Group of Companies

    Prince Rupert Port Authority

    Rio Tinto

    Work highlights

    • Advised Tervita Corporation on its merger with SECURE Energy Services, creating a combined entity with a total enterprise value of approximately C$2.3bn.
    • Advised Black Swan Energy on its C$1.2bn sale to Tourmaline.
    • Advised Enerflex on its stock-for-stock business combination with Exterran Corporation, creating a combined entity with a total enterprise value of approximately $1.5bn.

    Stikeman Elliott LLP

    Distinguished by its expertise in the midstream sector, Stikeman Elliott LLP fields a bench of specialist oil and gas lawyers whose experience spans corporate transactions, project development and financing matters. Calgary managing partner Chrysten Perry KC co-heads the energy group and is highly regarded for her strong corporate and commercial skill sets in the conventional oil and gas, LNG and oil sands segments. Kurtis Reed, who has an emphasis on commercial and project development arrangements, and seasoned energy specialist Frederick Erickson are also noted on the transactional side. The oil and gas group further benefits from the regulatory, environmental and Indigenous law expertise of Dennis Langen.

    Practice head(s):

    Chrysten Perry KC

    Work highlights

      Borden Ladner Gervais LLP

      Borden Ladner Gervais LLP stands out for the strength of its regulatory energy offering, including complex administrative law disputes. The team also acts on oil and gas transactions, infrastructure projects and corporate finance matters. In Calgary, Alan Ross KC and senior counsel Randall Block KC are noted for regulatory and administrative proceedings, while environmental law specialist Rick Williams is a key contact for regulatory work in Vancouver. Calgary’s Peter Bryan, who fronts the national practice, has a focus on transactions in the midstream sector. Michael Marion was recently appointed to the bench.

      Practice head(s):

      Peter Bryan; Rick Williams; Alan Ross KC

      Other key lawyers:

      Karen Salmon; Randall Block KC

      Key clients

      Government of Canada

      LNG Canada Development Inc.

      Cenovus Energy

      Devon Canada

      Canada Development Investment Corporation (CDEV)/ Canada Hibernia Holding Corporation

      BP Canada Energy Group ULC

      ConocoPhillips Canada

      Canadian Energy Pipeline Association (CEPA)


      Parkland Corporation

      PetroChina Canada

      Kelt Exploration Ltd.

      Birchcliff Energy Ltd.

      Plains Midstream

      Daqing Energy Canada Ltd.

      Tangle Creek Energy Ltd.

      Sinopec Canada

      Work highlights

      • Advising LNG Canada Development on all operational and regulatory (federal and provincial) aspects of its C$40bn LNG Export Terminal in Kitimat, British Columbia.
      • Representing the Province of British Columbia in an action commenced by Blueberry River First Nations (BRFN), in which BRFN sought to prohibit industrial development within a 40,000 sq km area in British Columbia.
      • Representing ConocoPhillips in the Canada Energy Regulator’s review and approval of NOVA Gas Transmissions’ application to construct and operate the North Corridor Expansion Project.


      Centred in Vancouver, Fasken‘s combined energy and climate practice has an emphasis on regulatory matters. Routinely appearing before government regulators and all levels of court, the energy team leverages the firm’s top-tier Indigenous law expertise and its robust environmental law offering to provide advice on the full range of applications, approvals, permitting and contentious matters. Vancouver-based commercial and regulatory partner Ron Ezekiel co-heads the national group alongside Montreal’s André Turmel. Vancouver-based energy and regulatory litigator Matthew Ghikas is also noted.

      Practice head(s):

      Ron Ezekiel; André Turmel

      Other key lawyers:

      Matthew Ghikas

      Key clients

      Ministry of Oil and Energy of Senegal

      NorthRiver Midstream Inc. (NorthRiver)

      Marathon Petroleum Canada Trading & Supply (Marathon)

      FortisBC Energy Inc.

      Parkland Corporation

      Plains Midstream Canada ULC

      Echelon Wealth Partners Inc.

      Work highlights

      • Advising NorthRiver Midstream on the Northeast British Columbia Connector Project, including preparing strength of claim analyses on more than 20 potentially affected Indigenous groups and to develop a consultation and negotiation strategy for Indigenous participation in the project.
      • Acting as lead counsel to FortisBC Energy in providing full regulatory support on FortisBC’s comprehensive review and application for a revised Renewable Gas Program.
      • Advising Plains Midstream Canada ULC (PMC) on all aspects of a share and asset swap transaction with Inter Pipeline (IPL), involving IPL’s interests in the Empress II and V Straddle Plants and PMC’s interests in the Milk River Pipeline System.

      McCarthy Tétrault

      Led out of Calgary by transactional oil and gas lawyers, McCarthy Tétrault‘s practice is well-versed across a range of asset acquisitions and disposals, financings, joint ventures and commercial arrangements. Brian Bidyk, who has recently undertaken transactions for clients such as West Lake Energy and Bench Creek Resources, co-heads the department alongside Kerri Howard, who advises on energy-related M&A, securities offerings and other transactional matters. Gordon Nettleton is a key contact for energy regulatory, Indigenous and environmental law matters.

      Practice head(s):

      Brian Bidyk; Kerri Howard

      Key clients

      Brookfield Infrastructure

      Razor Energy Corp.

      West Lake Energy Corp.

      Enbridge Inc.

      PrairieSky Royalty

      Surge Energy Inc.

      Board of Directors of Tangle Creek Energy Inc.

      Shell Canada

      Suncor Energy Inc.

      Parkland Corporation

      Wyatt Resources Ltd.

      Bench Creek Resources Ltd.

      Work highlights

      • Advised Brookfield Infrastructure in connection with its unsolicited cash and securities exchange takeover bid for Inter Pipeline and going-private transaction, valued at C$15bn.
      • Acted for Surge Energy on its C$58m acquisition of Fire Sky Energy.
      • Acted for Shell Canada on its investment in the C$875m biofuel plant in Varennes Quebec; the project is a partnership with Enerkem, Shell, Suncor and Proman with leadership and investment from the Federal Government and the Quebec Government.

      Gowling WLG

      Among Gowling WLG‘s most prominent files, it recently acted as regulatory counsel to Cenovus Energy in connection with Enbridge’s application to convert its Mainline pipeline system from common to contract carriage. Calgary-based administrative law stalwart James Smellie is recommended for regulatory issues and led on the Cenovus work. Lorne Rollheiser, also based in Calgary, heads the oil and gas practice and handles a mix of regulatory and transactional matters.

      Practice head(s):

      Lorne Rollheiser


      ‘The deep historical regulatory experience combined with current commercial practices that James Smellie brings to the table is highly valued and appreciated.’

      Key clients

      EOG Resources, Inc.

      Cenovus Energy Inc.

      CGL First Nations Limited Partnership

      Industrial Gas Users Association (IGUA)

      Government of Alberta – Alberta Environment and Parks Cherokee Canada Inc. and 1510837 Alberta Ltd.

      FortisBC Energy Inc.

      Leucrotta Exploration Inc.

      Intelligent Wellhead Systems Inc.

      Pipestone Energy Corp.

      MacEwen Petroleum Inc.

      Largo Inc.

      Samson Cree Nation (SCN)

      Kirby Offshore Marine LLC

      Government of Alberta

      Work highlights

      • Advised the international division of EOG Resources on its investments outside of North America.
      • Acted as regulatory counsel to Cenovus Energy in relation to the application of Enbridge to convert its Mainline pipeline system from common to contract carriage.
      • Advised Kirby Offshore Marine on environmental law matters connected to a marine oil spill off the coast of British Columbia.

      Lawson Lundell LLP

      With platforms in British Columbia, Alberta and Northern Canada, Lawson Lundell LLP‘s oil and gas practice advises major and junior producers on exploration, transportation, transactional and regulatory matters. Calgary-based Paul Negenman focuses exclusively on oil and gas work, with experience in both transactions and disputes. John Olynyk, also in Calgary, has a more general energy and natural resources practice, which is weighted towards environmental regulatory matters and Indigenous law.

      Practice head(s):

      Paul Negenman; John Olynyk

      Other key lawyers:

      Jeffrey Scobie

      Key clients

      Canadian Association of Petroleum Producers

      Surge Energy Inc.

      NuVista Energy Ltd.

      West Lake Energy Corp.

      Pure Environmental Waste Management Ltd.

      Canadian Natural Resources Limited

      Altura Energy Inc.

      City of Coquitlam

      Work highlights

      • Advised Surge Energy, as title due diligence counsel, on the acquisition of Astra Oil Corp.
      • Provided a title review for West Lake Energy Corp on its corporate purchase of Boulder Energy.
      • Advised Canadian Natural Resources Limited on Indigenous and regulatory matters related to its oil sands mining and thermal operations, conventional oil and gas operations, and heavy oil operations.