Supporting Responsible Resource Management, Energy Infrastructure Decommissioning, and Sustainability

We focus on supporting responsible resource management, and helping clients decommission offshore energy infrastructure, restoring the environment to pre-drilled conditions, and recycling materials to sustain their useful life.

We are committed to providing safe, reliable expertise to do the job right the first time.

We are the only single-source provider of marine transportation, well intervention, commercial diving and decommissioning and reclamation services, offering in-house engineering, project management and execution for every stage of the decommissioning value chain. Multiple services, one safety culture, one team.

Our Leadership Team

Steve Williams 

founder and CEO

Steve has a well-earned reputation as a high impact energy services executive. He has extensive accomplishments driving innovation and market prominence in oil and gas and oilfield service focused on the Gulf of Mexico and US OCS. Steve has an exceptional record of growth and strategic transformation in multiple service verticals, most recently creating the Alliance Family of Companies (the only sole source provider of well P&A, subsea/pipeline abandonments, and platform decommissioning and reclamation in the US). Prior to Alliance, in 1996, Steve founded International Offshore Services (IOS) with one OSV. He grew the fleet, funded through internally generated cash, to more than 60 vessels, including OSVs, crewboats, tugboats, and construction / heavy lift / pipelay barges. In 2009, Steve sold a majority stake in IOS and operated the business for two additional years before exiting the business with record-trailing EBITDA. Steve has also founded multiple P&A, coiled tubing, and hydraulic workover companies. Previously, Steve held senior positions in American Oilfield Divers, CalDive, and Horizon Offshore.

Chris Winger


Chris has more than 20 years of experience in finance and energy services industries. Chris joined Alliance in May 2016 and has led a number of the company’s strategic M&A initiatives, including the underwriting of numerous asset / service company acquisitions and end-of-life decommissioning / upstream opportunities in the GOM, both shelf and deepwater. Prior to Alliance, Chris spent nearly 20 years in the investment banking and capital markets business, having completed over $20 billion of public and private financing and corporate finance transactions, involving both domestic and international corporate clients. Most recently, Chris was Managing Director of Lazard Freres in NYC, where he was senior member of the Alternative Capital Finance team and global head of Private Capital Finance. Prior to joining Lazard, Chris was a Director in investment banking at Merrill Lynch. Prior to joining Merrill Lynch, Chris worked as a naval architect and marine engineer serving in a variety of leadership roles within the commercial transportation, defense, and offshore infrastructure industries. Chris has a Bachelor of Science in Engineering (Naval Architecture and Marine Engineering) and a Master of Business Administration from the University of Michigan.

Eric Trosclair

Risk Manager, Contracts Manager, and General Counsel

Eric is a licensed attorney in the State of Louisiana and admitted to Practice before the District and Appellant Courts of Louisiana, the US Eastern and Western District Courts of Louisiana, and the US Court of Appeals for the Fifth Circuit. Before joining Alliance in 2011, Eric had an extensive commercial contracts and litigation practice and served as outside counsel for several large heavy civil construction firms and oil and gas service companies. Eric has a Bachelor of Science in Biology from Louisiana State University, and a Bachelor of Civil Law and Juris Doctorate from the Paul M. Hebert School of Law (2005).

Our History


Steve Williams founded and exited several marine and oil field services companies, including International Offshore Services and multiple coiled tubing, well intervention / work-over, and plug and abandonment (P&A) services companies. Alliance predecessor companies complete $80 million fixed price turnkey decommissioning project for repeat client.


Alliance Offshore, LLC is founded in Larose, LA as an operator of four shallow water liftboats, supporting projects ranging from construction and maintenance, to production enhancement, to well P&A and platform decommissioning.


Alliance Offshore acquires six additional liftboats, including two new builds, six OSVs, and six crewboats. Alliance liftboat fleet capable of servicing more than 85% of GoM platforms.


Formed Alliance Energy Services in Houma, LA with the acquisition of P&A assets from Knight Well Services and subsequent merger with P&A, coiled tubing, and wireline assets of Priority Energy Services. Acquired three additional liftboats in support of shallow water / coastal operations.


Alliance Energy Group acquires Triton Offshore (formerly Triton Diving Services), which has five DSVs and operations based in Amelia, LA, and acquires two additional DSVs to grow the available diving fleet. Alliance successfully completes multi-year, end-to-end decommissioning project including numerous wells, multiple platforms, and several pipelines for repeat client.


Alliance Energy Group acquires EPIC Companies (formerly Tetra Technologies offshore division) adding 12 P&A and 2 coiled tubing spreads, specialty cutting, saturation diving (including 4-point DSV with integrated SAT and multiple portable SAT systems), and 1760T heavy lift derrick barge. In addition, it acquires new waterfront facilities and relocates Triton Offshore to Houma, LA. Alliance Offshore signs strategic relationship with Seatran Marine to manage its fleet of crewboats. Steve Williams acquires senior debt from third party lender, leaving its core businesses debt-free.


Alliance Offshore sells 145 class liftboat for redeployment into the US windfarm market and acquires the Seacor Influence, a 265 class liftboat, one of the largest liftboats available in the US GoM. Alliance Energy Group actively recruits following a year of uncertain demand (due to COVID), and exceeds 530 employees.