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Haynes and Boone, LLP

Glenn Kangisser

Glenn Kangisser



  • International
  • Shipping

WSG Practice Industries


Glenn Kangisser handles both projects and disputes for clients in the offshore, oil and gas, and shipping industries, with a focus on upstream exploration and production and the transportation of oil and gas. A leader in the offshore drilling sector, Glenn brings substantial depth of experience and market knowledge to his projects. Clients appreciate his ability to be involved in all aspects in the life cycle of a drilling unit, from the design and construction phase through operations and maintenance, to disposition, conversion or recycling.

Adept at both negotiating contracts and handling disputes, Glenn helps clients find commercial solutions either to minimize the risk of potential disputes or, where these can’t be avoided, to help them achieve the best possible commercial outcome. Glenn regularly advises clients on disputes in the English High Court, as well as in arbitrations under the LCIA, LMAA and ICC rules. With a truly international practice, Glenn has also negotiated contracts for the construction, sale, operation and employment of drilling units in the UKCS, U.S. Gulf of Mexico, West Africa, Brazil, the Middle East and the Far East.

Glenn is regularly involved in cases of exceptional size and significance. Recently, Glenn led his team in the largest arbitration ever handled by Haynes and Boone. He obtained a London arbitration award worth in excess of US$400 million for a European drilling contractor client in proceedings against a South Korean shipyard arising out of the disputed termination of a drilling rig construction contract. Glenn was also involved in one of the leading cases on force majeure under English law in securing for Seadrill Ghana Operations Ltd. an English High Court judgment worth in excess of US $270 million, plus interest and expenses, in a case relating to the disputed termination of a drilling contract for alleged force majeure. Glenn has also been involved in some of the largest and most significant offshore drilling projects over the last decade.

Glenn is recommended by The Legal 500 (2021 edition), which describes his team as “second to none” in their “very detailed knowledge of the oil and gas sector and in particular the drilling industry.” Glenn is also recognised as “accessible and a pleasant chap with a great legal mind” who is “very thorough and always delivers solid advice which has been thought through.”

Glenn is an active member of the International Association of Drilling Contractors (IADC) and is currently helping the IADC update their offshore daywork drilling contract.

Bar Admissions

England and Wales, 2005


Postgraduate Degree, Law and Legal Practice Course, BPP Law School
B.A., Economics (Hons.), Government and Political Theory, University of Manchester
Areas of Practice

International | Shipping

Professional Career

Significant Accomplishments

Assisting a drilling contractor with the negotiation and drafting of a drilling contract with an independent oil company for operations offshore West Africa for two firm wells and multiple option wells.

Advising a drilling contractor client on a substantial dispute relating to the suspension of a drilling contract for the convenience of the operator, an independent oil company. The dispute is the subject of ongoing proceedings in the English Commercial Court.

Assisting a drilling contractor client with the negotiation and drafting of a drilling contract with a major oil company for operations offshore South America for a one year term plus options.

Acted for Seadrill Ghana Operations Ltd and has recently secured an English High Court judgment worth in excess of USD 270 million, plus interest and expenses, for a drilling contractor in a case relating to the disputed termination of a drilling contract for alleged force majeure.

Assisting a drilling contractor client in a substantial ICC arbitration relating to the disputed cancellation of a construction contract for a semi-submersible drilling unit.

Assisting a drilling contractor client on the complex renegotiation of a drilling contract with a US independent oil company following the oil price collapse.

Is the Coronavirus (COVID-19) Outbreak a Force Majeure Event?
Haynes and Boone, LLP, March 2020

This is a question being asked by many companies. Is the severity of this event such that it enables companies to temporarily (or permanently) be excused from performance of their contractual obligations? As is often the case with legal questions, it depends. The term “force majeure” does not have a recognised meaning under English law...

Risky Business – English Court Rejects Force Majeure Claim in Offshore Drilling Contract
Haynes and Boone, LLP, July 2018

The English High Court issued its judgment in the case ofSeadrill Ghana Operations Limited v Tullow Ghana Limited1on 3 July 2018 in respect of a dispute under a long-term drilling contract between Seadrill and Tullow regarding the use of the semi-submersible drilling rig “WEST LEO” for operations offshore Ghana. The contract was signed in 2012 and its term was due to continue through to June 2018...

Brexit Update - Signs of "Regrexit" Following UK General Election?
Haynes and Boone, LLP, June 2017

The shock result in the UK General Election has caused further political and economic upheaval with no single party controlling the House of Commons. Serious questions are now being raised over the UK’s approach to Brexit with negotiations set to commence next week...

WSG's members are independent firms and are not affiliated in the joint practice of professional services. Each member exercises its own individual judgments on all client matters.

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