Leadership Team
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Portrait of Hakan Eser Head of services, OneSubsea, a Schlumberger company

Hakan Eser

Head of Services
OneSubsea

Hakan Eser is head of services, responsible for global operations for OneSubsea, a Schlumberger company. Recognizing the unique value proposition in bringing together best-in-class companies such as Helix Energy Solutions Group and Schlumberger, he worked to create Subsea Services Alliance in 2015 and has served as its director since then. Previously, he held various executive positions at OneSubsea since its formation in 2013 and spent his first 17 years after joining Schlumberger in 1995 with the Wireline segment, where he advanced to vice president Wireline for Latin America.

Bio

Portrait of David Carr Senior Vice President – International, Helix Well Ops

David Carr

Senior Vice President–International
Helix Well Ops

David Carr is senior vice president–international at Helix, having joined the company in 2015 after gaining more than 20 years’ experience across more than 30 countries with major oilfield service providers such as Schlumberger, Baker Hughes, and Weatherford. Mr. Carr is primarily tasked with executing a geographical growth strategy on behalf of both Helix and the Subsea Services Alliance, for which he is the primary contact.

Bio

Portrait of Owen Kratz CEO and President, Helix Energy Solutions Group, Inc.

Owen Kratz

CEO and President
Helix Energy Solutions Group, Inc.

Owen Kratz is president and chief executive officer of Helix. He was named executive chairman in October 2006 and served in that capacity until February 2008, when he resumed the position of president and CEO. He served as Helix’s CEO from April 1997 until October 2006. Mr. Kratz joined Cal Dive International, Inc. (now known as Helix) in 1984 and held various offshore positions, including saturation diving supervisor, and had management responsibility for client relations, marketing, and estimating.

Bio

Portrait of Donald Ross, President Production Systems, Schlumberger

Donald Ross

President
Production Systems Schlumberger

Donald Ross is currently the president of Production Systems, a role he assumed in May 2020, and is located in Houston, Texas. His technical expertise includes engineering and project management for downhole reservoir monitoring and completions on land, offshore platform, and subsea projects, including integration, final installation, and commissioning. Mr. Ross joined Schlumberger in 1997 as technical project engineer for the Asia Region.

Bio

Portrait of Aparna Raman President, Reservoir Performance, Schlumberger

Aparna Raman

President
Reservoir Performance Schlumberger

Aparna Raman is the president of Schlumberger’s Reservoir Performance Division. She is based in Paris and responsible for the service quality, service delivery, engineering, operations, manufacturing, capital planning, talent management, and R&D related to this division. Previously, Ms. Raman held a variety of senior positions within Schlumberger internationally. She has worked extensively in the Gulf of Mexico, Alaska, US and Canada land, Europe and Africa, Asia, and Australia. Ms. Raman joined Schlumberger as a field engineer in 1996.

Bio

Wallace Pescarini, Basin President Offshore Atlantic Schlumberger

Wallace Pescarini

Basin President Offshore Atlantic
Schlumberger

Wallace Pescarini is president of the Offshore Atlantic Basin, a position he assumed in July 2020. He is responsible for the Schlumberger business in Europe, Africa, Latin America, and offshore North America. Prior to his current role, he held positions as Wells vice president marketing & technology, president Testing Services, president Reservoir Characterization Western Hemisphere, president Mexico and Central America, vice president Drilling Europe & Africa, and global vice president Deepwater. Mr. Pescarini joined Schlumberger as a Testing field engineer in Brazil in 1997.

Bio

Portrait of Scotty Sparks EVP and Chief Operating Officer, Helix Energy Solutions Group, Inc.

Scotty Sparks

EVP and Chief Operating Officer
Helix Energy Solutions Group, Inc.

Scotty Sparks is executive vice president and chief operating officer of Helix, having joined Helix in 2001. He has also served in various positions within the Helix robotics subsidiary, Canyon Offshore, Inc., including as senior vice president from 2007 to September 2012. Mr. Sparks has more than 30 years of experience in the subsea industry, including as operations manager and vessel superintendent at Global Marine Systems and BT Marine Systems.

Bio

Portrait of Ken Neikirk Senior Vice President, General Counsel & Corporate Secretary, Helix Energy Solutions Group, Inc.

Ken Neikirk

Senior Vice President, General Counsel & Corporate Secretary
Helix Energy Solutions Group, Inc.

Ken Neikirk has served as senior vice president, general counsel, and corporate secretary of Helix since May 1, 2019. Mr. Neikirk has more than 20 years of experience practicing law in the corporate and energy sectors and has been a member of Helix’s legal department since 2007, most recently serving as corporate counsel, compliance officer, and assistant secretary from February 2016 until April 2019. Mr. Neikirk oversees the company’s legal, human resources, and contracts and insurance functions.

Bio

Portrait of Don Sweet, Director, OneSubsea

Don Sweet

Director
OneSubsea

Don Sweet is director of OneSubsea, a Schlumberger company, which under his guidance has become the leader in the subsea market. He is also a member of the executive steering committee for the Subsea Integration Alliance between OneSubsea and Subsea 7. He joined the OneSubsea executive leadership team as vice president integrated solutions & sales in 2013 when the company was formed between Cameron and Schlumberger. Mr. Sweet has worked for Schlumberger since 1984 in a variety of operations and management positions in North America, Europe, and the Middle East. 

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