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About Dewey

As chair of the firm’s finance department, Dewey Gonsoulin leads a team that effectively and efficiently represents commercial lenders, mezzanine lenders, corporate borrowers and other financial institutions in all types of financing transactions.

For more than three decades, Dewey has devoted a significant portion of his practice to energy financing. He is widely recognized for his expertise in upstream finance and also has extensive experience in oilfield service and midstream pipeline financings. Dewey focuses primarily on credit facilities in the upstream energy sector, including traditional borrowing base credit facilities provided by senior bank lenders to independent producers as well as more complex mezzanine and development financing transactions.

Dewey is a frequent speaker and writer on topics related to upstream oil and gas reserve-based financings. Along with Senior Partner Jason Fox, Dewey co-authored “Reserve based finance – A tale of two markets” for Oil and Gas Financial Journal (2014). This four-part series is a testament to both Dewey’s and the firm’s knowledge of this sector of the industry.

In periods of economic downturn, Dewey works alongside the firm’s restructuring practice, serving as lead transaction counsel on numerous workouts and restructurings involving energy companies. Partnering with his major banking clients, he has been instrumental in assisting clients with reserved based loans, senior secured revolving credit facilities and other financing arrangements pertaining to both foreign and domestic assets.

Dewey's extensive experience, deep knowledge, and collaborative approach make him a valuable asset to clients looking for effective and efficient representation in complex finance transactions. His work has earned him recognition in several of the leading legal directories, including Chambers USA, in which he has been ranked in Texas Banking & Finance every year since 2006. The directory notes that Dewey “boasts a strong finance practice, regularly acting on behalf of lender-side clients engaging in the oil and gas space” and that he “is a trusted adviser and expert on all relevant subject matters for RBL lenders.”

He is also recognized in IFLR1000’s Financial & Corporate and M&A Guide (2018-2023), and he has been recommended by The Legal 500 United States in Banking and Finance Law for the last 18 years (2006-2023).

In addition to chairing the firm’s finance department, Dewey has served in various other leadership roles within the firm over the years, including serving on its management committee. He currently serves as one of firm’s two hiring partners for the Houston office.

His knowledge and leadership of the legal negotiation process has proved invaluable.
Chambers USA, 2023


Recent Notable Matters

Multinational Financial Services Company — $1 billion senior secured revolving credit facility with an initial borrowing base of $575 million, to Bastion Energy Topco, LLC, as borrower

Energy-Focused Private Equity Sponsor — $276.6 million term loans and letter of credit facilities with Investec Bank PLC as administrative agent and lender as structured back-levering financing

PNC Bank, N.A. — $120 million unsecured term loan facility in favor of a subsidiary of natural gas midstream services provider ONEOK, Inc., as administrative agent

Navitas Petroleum and Beacon Offshore Energy — up to $1.4 billion development financing and reserve based lending facilities in relation to the Shenandoah oil & gas field in the US Gulf of Mexico

Société Générale — $1 billion senior secured reserve-based revolving credit facility for a privately held exploration and production company; as borrower, to refinance the existing credit facility and to finance the acquisition, development and maintenance of oil and gas properties located in Texas, as administrative agent

PNC Bank, N.A. — $60 million unsecured delayed-draw term loan facility in favor of a subsidiary of natural gas midstream services provider ONEOK, Inc. as administrative agent

Multinational Financial Services Company — $250 million revolving credit facility, subject to a borrowing base, for an upstream oil and gas company, as administrative agent

Publications and Speeches

“Reserve Based Lending: A Legal Perspective,” SMi’s Project Financing in Oil and Gas North America Conference, March 9-10, 2015.

"A tale of two markets - Part 1," Oil & Gas Financial Journal, January 2015.



The University of Texas School of Law,
The University of Texas at Austin,
Bachelor of Business Administration
with honors

Bar Admissions



State Bar of Texas
Houston Bar Association



Texas Super Lawyers 2013 Recognizes 15 Bracewell Attorneys



Chambers USA
Texas Banking & Finance, 2006 - 2023
The Legal 500 United States
Finance - Commercial Lending: Advice to Lenders, 2016 - 2023; Finance - Commercial Lending: Advice to Borrowers, 2016 - 2023; Bank Lending, 2009, 2015
BL Rankings
Best Lawyers
Banking and Finance Law, 2006 - 2024; Oil and Gas Law, 2021 - 2024; Houston Lawyer of the Year, Banking and Finance Law, 2020
Delinian Limited
IFLR1000 Financial & Corporate and M&A Guide
2018 - 2023
Lawdragon Inc.
Lawdragon 500 Leading US Energy Lawyers
Energy Finance, 2023
Thomson Reuters
Texas Super Lawyers
2004, 2013, 2016 - 2022