Orrick, Herrington & Sutcliffe LLP

Orrick, Herrington & Sutcliffe LLP advises a diverse range of clients on complex and innovative oil and gas transactions, including acquisitions, joint ventures, financings, and project developments. The team’s work spans traditional and emerging assets, with increasing activity in areas such as carbon capture, hydrogen, and energy transition projects alongside its established upstream, midstream, and downstream expertise. Dahl Thompson and Kyle Drefke lead the team from Houston and Washington DC, respectively. Co-head Blake Winburne is a go-to adviser for oil and gas players and private equity firms, bringing expertise in M&A, joint ventures, project finance, and development. Joe Roger handles transactions across the upstream, midstream, and downstream, frequently working with assets such as LNG, carbon, hydrogen, and ammonia. Jonathan Ayre’s strong finance capabilities are instrumental to numerous deals, particularly in the growing oil and gas securitization market. Bradford Gathright focuses on M&A and private equity transactions, while Adam Griffin is noted for his project finance expertise. Adam Kowis continues to advise operators, exploration and development companies, and funds on M&A and commercial contracts. David Aaronson departed in October 2024. Apart from Drefke in Washington, DC, and Griffin in New York, the team is based in Houston.