Oil and gas in Norway

Advokatfirmaet Schjødt

Advokatfirmaet Schjødt combines 'high legal competence and excellent knowledge of the industry' to handle a range of noteworthy transactions and disputes relating to the Norwegian Continental Shelf. The team acts for  a variety of high-profile clients in the sector, including Lundin Norway, Vår Energi and Total E&P Norge. Sverre Bjelland and Preben Willoch jointly lead the team from Stavanger and Oslo respectively. Other key names include litigator Amund Bjøranger Tørum , Torkjel Grøndalen , who has been notable involved in the Norwegian State's carbon capture and storage project; and Erlend Bakken.

Practice head(s):

Preben Willoch; Sverre Bjelland

Other key lawyers:

Christian Fredrik Michelet; Erlend Bakken; Torkjel Grøndalen; Amund Bjøranger Tørum; Peter Hiorth


‘The combination of high legal competence and excellent knowledge of the industry. This goes in particular for the partners Amund Bjøranger Tørum and Peter Hiorth.’

‘In-depth knowledge and experience within our line of business. Proactive approach and efficient work processes. To the point and clear advice.’

‘Always available (24/7), quick response, efficient and they are pleasant to work with.’

‘Our main contact, Preben T. Willoch is outstanding.’

Key clients

Lundin Norway AS

Vår Energi AS

ExxonMobil Exploration and Production Norway AS

Neptune Energy Norway AS

Repsol Norge AS

Total E&P Norge AS

A/S Norske Shell

Wintershall Dea Norge AS

ONE-Dyas Norge AS

Spirit Energy Norway AS

Kufpec Norway AS

Gassco AS

Petoro AS


Source Energy AS

Chrysaor Norge AS

Capricorn (Cairn) Norge AS


Mime Petroleum AS

Work highlights

  • Handled the sale of all ExxonMobil’s Norwegian field interests and the transfer of the remaining Norwegian organisation to Vår Energi AS. 
  • Assisting Total E&P Norge AS with the development of the first Norwegian full scale CCS project.
  • Represented the non-operators of Skarv Unit in a complex arbitration case regarding charges of costs for centralised administrative and technical support services from the operator’s affiliated companies.


With a team composed of 'outstanding individuals that manage to combine legal expertise with a good understanding of the industry', BAHR is engaged on a broad range of matters including transactions, development projects, disputes and petroleum tax issues. Instructed by several leading companies including Total, Shell and ExxonMobil, the department is particularly active advising on issues related to E&P mandates. Managing partner Thomas Svensen is focused on oil and energy work, with significant litigation experience before domestic courts and arbitration bodies. Jon Christian Thaulow jointly leads the practice alongside Svensen, with expertise in tax matters, litigation and transactions. Jan Jansen leads the firm's wider oil and energy department.

Practice head(s):

Thomas Svensen; Jon Christian Thaulow

Other key lawyers:

Jan Jansen


Due to their extensive industry insight, their advice is always commercially sound.

High quality and swift deliveries.

Outstanding individuals that manage to combine legal expertise with a good understanding of the industry and the value drivers.

A highly competent team with a high degree of customer service and efficient case handling. They are always available and give us as customers the assistance we need, when we need it and with high quality.

The level of engagement and service they provide make them feel like part of our own company. When an associate of the firm gets involved in a case, they work and engage as if they were our own employees.

Thomas Svensen always provides fantastic service and is always available to aid us with whatever we need.

Key clients

Aker BP

Aker Energy AS






Vår Energi


Sval Energi (previously Solveig Gas Norway)



Aker Group Companies (Aker, Aker Solutions, Akastor, Kvaerner)



Work highlights

  • Assisting Sval Energi with the acquisition of Capricorn Norge AS.
  • Successfully representing A/S Norske Shell in the Supreme Court against the Norwegian State regarding the tax treatment of R&D costs.
  • Advising HitecVision on its €2bn divestment of CapeOmega.

Kvale Advokatfirma DA

'Well known for its strength in regulatory issues', Kvale Advokatfirma DA is also experienced in contentious proceedings, particularly in relation to petroleum activities on the Norwegian continental shelf. The practice is also instructed on transactional and contractual matters, notably recently advising a major oil company in connection with the sale of the entire ExxonMobil portfolio in Norway. Bolstered by the addition of FPSO project specialist Gry Bratvold from Advokatfirmaet Selmer AS in mid-2019, the team has seen an increase in large development mandates. The department is jointly led by Yngve Bustnesli, who 'with a background from the ministry, is particularly good on regulatory issues', and Jens Brede, who focuses on contractual issues.

Practice head(s):

Jens Brede; Yngve Bustnesli

Other key lawyers:

Gry Bratvold


Yngve Bustnesli has an in-depth understanding of industry and regulatory frameworks. First-class adviser. To the point and very good at communicating.

Good on litigation.’

Well known for its strength on regulatory issues.

Jens Brede is a brilliant litigator. Yngve Bustnesli, with his background from the ministry, is particularly good on regulatory issues.

Key clients

Maersk Drilling


Wintershall Norge



BW Offshore

Kerogen Capital

Kongsberg Maritime

M Vest Energy

Pandion Energy

Solution Seeker

ConocoPhillips Scandinavia

EagleBurgmann Norway


Work highlights

  • Represented Equinor in a high-profile $650m+ claim against COSL relating to the termination of a rig contract for COSL Innovator.
  • Advised a major oil company on the due diligence for the $4.5bn sale of the entire portfolio of ExxonMobil in Norway, consisting of 20 producing fields with infrastructure, to Vår Energy.
  • Provided Pandion Energy with regulatory and contractual counsel on its submission with licence partner Aker BP of a development and operation plan (PDO) for the redevelopment of the Norwegian Hod field.

Advokatfirmaet Simonsen Vogt Wiig

According to a client of Advokatfirmaet Simonsen Vogt Wiig, 'all the minutes with the team are valuable, and we always learn something with them'. Undertaking the full range of oil and gas work, the practice has recently seen an increase in construction and procurement work, and also continues to be a key adviser to private equity-backed players for acquisitions. As practice co-head, Bjørn-Erik Leerberg's ‘experience in presenting new solutions to new problems is incredible'. Co-head Gunnar Espeland is highly regarded for oil and gas procurement work, onshore and offshore construction issues and decommissioning projects.

Practice head(s):

Bjørn-Erik Leerberg; Gunnar Espeland


‘Bjorn Leeberg’s experience and capability of thinking and presenting new solutions to new problems is incredible and unique.

Ability to connect on an amicable level making it feel like a true team.

‘Personal touch, capable of the informal part which entails cooperation.’

Gunnar Espeland has pragmatic, solution oriented, broad experience in oil and gas. Also very friendly and down to earth which fosters great collaboration.

‘Impressive insight into petroleum regulation worldwide – good knowledge about the Norwegian petroleum regime.

Highly competent and easy to contact partners and employees.

Key clients

VNG Norge AS

Neptune Energy Norge AS

Eni S.p.A / Eni International B.V

Vår Energi AS (previously Eni Norge AS)

Aramco Overseas Company B.V./ Saudi Aramco Energy Ventures LLC

Gassco AS

Gassnova SF

Capricorn Norge AS

ONE-Dyas Norge AS

OMV (Norge) AS

Norwegian Petroleum Directorate

Tullow Oil plc./Tullow Oil Norge AS

Faroe Petroleum Norge AS

Petroleum Safety Authority Norway

Instituto Nacional de Petroleo, Mozambique

Uganda: Ministry of Energy and Mineral Development, Petroleum Exploration and Production Department, Petroleum Authority

Lebanese Petroleum Administration

Horisont Energi AS

Ministry of Energy and Petroleum Upstream Regulatory Authority, Tanzania

Zanzibar Petroleum Regulatory Authority, Tanzania

National Environment Management Council, Tanzania

Zanzibar Environmental Management Authority, Tanzania

LUKOIL Overseas North Shelf AS

Work highlights

  • Advising Gassnova SF on a range of EU and Norwegian regulations in respect of CCS, state aid/environmental guidelines, Norwegian environmental legislation, as well as EPC/contract law.
  • Providing Aramco Overseas Company B.V. and Saudi Aramco Energy Ventures LLC with M&A/corporate and legal advice in connection with the purchase of shares in several Norwegian oil technology companies.
  • Assisted the Mozambican Government with the establishment and implementation of its upstream oil and gas regime.

Advokatfirmaet Thommessen AS

'Always finding balanced solutions, whether for litigation or legal advice',  Advokatfirmaet Thommessen AS is a leader in oil and gas work, with particular expertise in financing matters, M&A, litigation and development projects. The firm recently opened an office in energy hub Stavanger, and recruited partners Audun Stornes, Thomas Abrahamsen and Jone Stakkestad in the process. Christian Hals jointly leads the team and has extensive experience in M&A and capital markets transactions. Fellow co-head Pål Lieungh is highly regarded for his international experience, advising Norwegian companies on global projects.

Practice head(s):

Christian Hals; Pål Lieungh

Other key lawyers:

Audun Stornes; Thomas Abrahamsen; Jone Stakkestad


Great people. Good chemistry. Strong experience from wide range of areas. Flexible, hard working, available. Strong oil & gas transaction experience. Excellent industry network.

Indepth knowledge of NCS assets, transactions and deal structuring.

Always finding balanced solutions, whether for litigation or legal advice.

Thommessen is one of the leading if not the leading law firm in Norway when it comes to oil & gas.

Understanding and accommodation of corporate processes and key considerations.

Breadth of expertise, combining deep E&P knowledge with corporate, M&A and HR capability.

Key clients

BP International


Kongsberg Gruppen




Island Offshore

Energean Oil & Gas

PGNiG Upstream Norway

Odfjell Drilling


Shelf Drilling

Vår Energi

BW Offshore

RAK Petroleum

Wellesley Petroleum


MOL Norge


Myklebust Verft

TTC Norge

Veolia Environmental


PGNiG Supply & Trading

BW Energy

Longboat Energy

LOTOS Exploration And Production Norge

Wintershall DEA Norge


Suncor Energy Norge AS

Work highlights

  • Advised Vår Energi and its shareholders on the $4.5bn acquisition of ExxonMobil’s upstream assets in Norway.
  • Advised Energean on its $750m acquisition of Edison’s E&P portfolio.
  • Advised ONE-Dyas on its $59.5m acquisition of a 10% interest in the Nova Development on the NCS.


With 'very strong knowledge of the E&P world' and providing a 'one-stop-shop service', Wiersholm has a longstanding relationship with Equinor, which instructs the firm on a wide variety of matters. The team has expertise across transactional, contentious and regulatory work, with the department regularly retained by E&P companies on the Norwegian continental shelf. Sondre Dyrland, who 'possesses strong business acumen, broad and in-depth knowledge of the E&P business and provides valuable and excellent advice' leads the practice. Jon Rabben is another key contact and is highly regarded for his work on a range of acquisitions, financings and negotiations.

Practice head(s):

Sondre Dyrland

Other key lawyers:

Jon Rabben


Very strong knowledge of the E&P world and provides a one-stop-shop service.’

Sondre Dyrland possesses strong business acumen, broad and in-depth knowledge of the E&P business and provides valuable and excellent advice.

‘Very good overall insight in the industry and strong legal expertise. Able to respond quickly with high quality.’

Sondre Dyrland quickly understands the relevant issues – understands complex technical context for the legal issues – high integrity – able to respond quickly when needed – high quality of legal work.

The team is unique as it combines deep insight into government processes with the upstream and midstream oil & gas sectors. There is no other team that has more experience with carbon capture and storage.

Key clients

Equinor ASA

ConocoPhillips Skandinavia AS

Total E&P Norge AS/Total S.A.

Lundin Norway AS

Spirit Energy Norge AS

Chrysaor Norge AS

Norwegian Ministry of Petroleum and Energy (MPE)

The Norwegian Ministry of Trade, Industry and Fisheries


CapeOmega AS

Work highlights

  • Assisting the MPE as sole legal adviser with its full-scale carbon capture and storage project.
  • Acted as lenders’ counsel to Danske Bank A/S on the documentation and establishment of a revolving borrowing base facility and an exploration financing facility for the Norwegian and UK continental shelf activities of the DNO Group.
  • Advised Chrysaor Norge AS in connection with the assignment of participating interest in two licences on the NCS, whereby the client increased its total participating interests in both licences.

Arntzen de Besche

With 'in-depth knowledge of the oil and gas industry', Arntzen de Besche is a key name in the oil exploration and production sector, advising on the full spectrum of related matters including commercial contracts, regulatory issues and corporate transactions. The department has also increased its capital markets offering with the arrival of Per Kristian Ramsland from Kluge Advokatfirma AS in late 2019. Other key names include practice head Karl Erik Navestad, who is experienced in advising oil companies and offshore contractors on development projects, and Rune Omdahl, who is an expert in licensing matters.

Practice head(s):

Karl Erik Navestad

Other key lawyers:

Rune Omdahl; Per Kristian Ramsland


In-depth knowledge of the O&G industry.

Responsive and practical. Arntzen has capabilities in the various legal areas to meet my company’s legal needs. The team is timely in responding and practical in their advice.

Key clients


Instituto Nacional de Petróleo (INP) in Mozambique / Norwegian Petroleum Directorate

Lundin Norway AS

Vår Energi AS

Hess Corporation / Hess Norge

Teekay Corporation /Teekay Offshore Partners


Edge Petroleum

Pandion Energy

Gassco AS

Work highlights

  • Assisting Lundin Norway AS with the sale of 2.6% of the major oil field Johan Sverdrup in relation to the redemption by Lundin Petroleum of 16% of the outstanding shares in Lundin Petroleum AB that is currently held by Equinor ASA.
  • Assisting The Ministry of Petroleum and Energy in Ghana / Norwegian Petroleum Directorate with a review of existing legislation, advising on the development of a new act as well as on the regulatory basis for the upstream petroleum sector.

CMS Kluge

The ‘very focused and specialised‘ practice at CMS Kluge is particularly active on E&P mandates. Other key work includes advising on transactions and petroleum tax issues; the department is also increasingly involved in green shift matters. Specialising in E&P transactions and offshore development projects, Olav Hasaas heads-up the Oslo-based group, while E&P specialist Siv Midland joined the firm in 2020 to lead the Stavanger-based team. Per Kristian Ramsland departed to Arntzen de Besche in 2019.

Practice head(s):

Olav Hasaas; Siv Madland

Other key lawyers:

Camilla Grytten; Asle Bjelland


Very focused and specialised in their area of trade.

Siv Madland and Camilla Grytten are both very positive, energetic and hard working. In particular their in-house background is appreciated as it has an effect on their efficiency in delivering the legal product.

Asle Bjelland is a well recognised offshore construction lawyer. He is often used as expert and is an excellent litigator.

Olav Hasaas. Good sparring partner.

Key clients

Pandion Energy AS


Total E&P Norge AS

Petroleum Technology Company AS

GMC Maritime AS

Kongsberg Gruppen ASA

Lundin Norway AS

Neodrill AS

Wintershall Dea Norge AS

ORG Geophysical AS


Work highlights

  • Representing Total in a major tax case regarding delayed deliveries of liquefied natural gas (LNG) from the Norwegian continental shelf.
  • Advised Pandion Energy on the sale of 10% interest in the Duva field to PGNiG and Solveig Gas.
  • Assisted DNO ASA with the development of the Brasse field.

Advokatfirmaet Selmer AS

Advokatfirmaet Selmer AS's merger with oil and gas boutique Kyllingstad Kleveland Advokatfirma DA has significantly expanded the department's size and capabilities. The practice has a broad scope spanning corporate transactions, licensing work, litigation and regulatory issues, acting for industry leaders in the Nordic region. Thomas G. Michelet jointly leads the team and regularly advises on corporate, regulatory and licensing mandates. Co-head Eirik Høiby, who joined the team as part of the merger, is an expert in construction issues, project executions, negotiations and dispute resolution.

Practice head(s):

Thomas G. Michelet; Eirik Høiby


The team we use has a good business understanding and strategic thinking. Hard working and deliver on time.

High standard. Proactive and practical. Know the O&G industry segment.

Key clients

Acta Marine


Canada Pension Plan Investment Board

Deep C Solutions

Global Geo Services


LUKOIL Overseas North Shelf


Pandion Energy

RN Nordic Oil

Fortum Oslo Varme

Ocean Installer


Global Maritime

Karpinsky Oil and Gas Company

Lundin Norway



Petrolia NOCO

Work highlights

  • Represented Deep C in a contractual dispute with DUC Diving regarding the provision of subsea equipment.
  • Advising Fortum Oslo Varme on its contemplated carbon capture & storage (CCS) facility.
  • Advising Ocean Installer on a number of mandates related to major EPCI projects around the world.

Wikborg Rein

Wikborg Rein's petroleum and energy team covers the full range of disputes, transactions and operational work. In particular, it is known for its dispute resolution expertise and recently acted as lead counsel in a major international arbitration for the Ukrainian state-owned gas company Naftogaz. Practice head Cathrine Hetland is a specialist in the regulatory landscape of the Norwegian Continental Shelf. Other key lawyers include head of gas disputes Aadne Haga, whose practice focuses on buyers of natural gas, and Dag Mjaaland, who has expertise handling international gas disputes.

Practice head(s):

Cathrine Hetland

Other key lawyers:

Dag Mjaaland; Aadne Haga; Birgitte Karlsen; Gaute Gjelsten; Christian James-Olsen; Morten Valen Eide


The team provides targeted legal advice and support with a strong mix of oil and gas competence with commercial and contract law. Their ability to distil the legal aspects of oil and gas law for our commercial concerns is critical and unique when compared to other firms.

This is a strong team in the litigation side of the offshore energy market in Norway.

They have strength and depth but the standout partner is Gaute Gjelsten. He has a highly developed sense of what energy insurance wishes to achieve and his opinion is valued highly.

Christian James-Olsen  is efficient, always available, highly qualified and experienced within the maritime sector. He has a broad international experience and provides practical advice also implementing cultural aspects when relevant.

Key clients


COSL Drilling Europe AS

CapeOmega AS

HitecVision VII LP

HKN Energy Ltd.

Ukrgazvydobuvannya (“UGV”)

Gard Marine & Energy Insurance (Europe)

Transocean Offshore

BW Offshore/BW Energy

Gulf Keystone

Independent Oil & Gas (IOG)

Work highlights

  • Acting as global lead counsel for Naftogaz in a multi-disciplinary and multi-jurisdictional dispute with Gazprom, encompassing three Stockholm Chamber of Commerce arbitrations, Swedish challenge proceedings related to three SCC arbitral awards, a European Commission competition law complaint, and proceedings to enforce an arbitral award in eight different jurisdictions.
  • Acting for COSL in its dispute with Equinor Energy AS following Equinor’s termination of a long-term drilling contract with COSL.
  • Acting as counsel to CapeOmega on the €1bn+ sale of the company from HitecVision to Partners Group.

Advokatfirmaet Haavind AS

With 'extensive industry and commercial knowledge', Advokatfirmaet Haavind AS acts for major contractors in the industry, advising on transactions, contract law and project execution issues. Workforce reductions is another niche area of specialism, and the department is also regularly instructed in litigation and arbitration proceedings. Christopher L. Sveen heads up the construction and offshore side of the practice, while Bård Sandstad leads the transactional group. Mikal Brøndmo is a name to note for disputes and Johnny Johansen is the key contact for contract matters.

Practice head(s):

Bård Sandstad; Christopher L. Sveen

Other key lawyers:

Johnny Johansen; Mikal Brøndmo


Advokatfirmaet Haavind AS has extensive industry and commercial knowledge, including practical business experience within the oil and gas industry.

Christopher Sveen plays a key role in coordinating all work performed for us, and has ensured continuity and safeguarding of all advice received.

Very strong E&P team.’

‘Covers all the relevant aspects within oil and gas industry, skilled team.

Christopher Sveen – very skilled and experienced with an operator and supplier view, giving advice to limit risk and what to be aware of.

Key clients

Norsk Industri (The Federation of Norwegian Industries)

Bangchack Corporation PCL

Seacrest Capital Group

Fortis Petroleum Corporation

Aker Solutions AS


Heerema Fabrication Group

Work highlights

  • Advising Aker Solutions on its restructuring and preparation for the spin off of its wind development business and its CCUS business into two new separate entities and establishing the framework for its continued co-operation with the two new entities.
  • Assisted Miros with drafting its contract terms for selling its sensors, systems and services to its clients in the global offshore industry.
  • Assisting Norsk Industri with the development of new standard contracts for deliveries to the Norwegian continental shelf.


SANDS' multi-disciplinary group is recognised as a go-to name for cross-border work, including transactions and disputes. Lars Berge Andersen heads up the team and primarily advises on major oil and gas sector mandates, both in Norway and globally. Oddbjørn Slinning is also active in maritime and offshore matters with experience in litigation and restructurings.

Practice head(s):

Lars Berge Andersen

Other key lawyers:

Oddbjørn Slinning 

Key clients

Frydenbø Industri


PSW Technology


Helix Oilfield Services


Wellis Mpcd


Bunker Oil

Offshore Simulation Centre


Borealis/Australis Maritime

Helix Oilfield Services


Jets AS

MHWirth AS

Akastor ASA

Work highlights

  • Advising Bergen City Court on the full corporate investigation of listed offshore company Oceanteam.