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Geert Prins

Chief Executive Officer

Geert is co-founder of the Well Services Group and has more than 30 years of experience in the oil- and gas industry.
He has been General Manager of Baker Hughes Continental Europe before founding the Well Services Group in 2004.

Geert holds a Master of Business Administration from University of Twente.


Hans Wielinga

Chief Financial Officer

Hans joined the Well Services Group in 2017. He is in charge of finance and control, cash management and M&A.


Koos Frieling

Chief Technology Officer

Koos is co-founder of the Well Services Group and has more than 30 years of experience in the oil- and gas industry.
He has been with Baker Hughes before founding the Well Services Group.


Mark Platje

Business Development Director

Mark joined Well Services Group in 2011. He is in charge of all business development activities of the Well Services Group.
He has been with Balance Point Control before joining the Well Services Group.

Mark holds a Bachelor of Engineering from Windesheim University of Applied Sciences.


Klaus Harm

Chief Information Officer

Klaus joined the Well Services Group in 2008.
He is in charge of all ICT and legal affairs globally and holds the position of Regional Director Middle East.

Klaus holds a Master of Sciences from University of Applied Sciences FH Joanneum and a Bachelor of Engineering from Windesheim University of Applied Sciences.