Team Members

Marieke is our experienced hands-on Office Manager since 2019. Before she came to Leeuwarden, she was a HR and office manager at Numatic for over 16 years. She helps out with all office issues as personnel, project administration, bookkeeping and all other occurring activities and she makes sure the managers don't forget to breathe every once in a while.

Alie is our experienced hands-on Office Manager since 2024. She helps out with all office issues, such as bookkeeping, project administration, personnel and all other occurring activities. She enjoys working together with her colleagues to ensure that things run smoothly and that our customers are served as best as possible.

Mohammed has BSc & MSc in Petroleum Engineering and is currently pursuing an MSc in Drilling & Well Engineering at the University of Stavanger. Before joining Spidron Weco, Mohammed worked in the research of Enhanced Oil Recovery for 18 months and as a Mud Engineer for about three years.

After having completed his Master of Science degree from the University of Aberdeen in November 2018, Mohammed moved to the Netherlands where he took several short-term jobs in the oil and gas industry including Roustabout Offshore Drilling and Coil Tubing Trainee Operator. In February 2020, he joined Spidron Weco as a junior Drilling & Well Engineer. Put in charge - under supervision - of various live projects at Spidron Weco, Mohammed has acquired knowledge and skills in Designing wells (Oil & Gas, Geothermal), writing Drilling program, writing Well Intervention program, running cost estimates and preparing risk registers.

After completing his Petroleum Engineering study at Delft University, Robert began his working career in 2001 working for BECi B.V. designing and developing salt and gas wells. Through this work he moved to Frisia Zout B.V. where he became Head of Mining. In 2008 he became Operations Manager for Northern Dutch Drilling Company (NDDC), operating a novel concept Huisman Drilling Rig on gas and geothermal wells in the Netherlands and Denmark. As NDDC was owned by Verkley, Robert also became actively involved with pipeline work, both in Europe and the Middle-East.

In 2011 Robert started Holland Drilling Group (HDG), involved in a wide variety of drilling related projects, ranging from geothermal permit applications in the Netherlands to acquiring a drilling contract in New Zealand, and developing a real-time web-based drilling operations monitoring system (RemoteView ©). This was followed by the start-up of Spidron B.V. in 2014, where Robert continued to provide a wide range of services to (primarily) geothermal energy projects.

In 2017 Spidron B.V. merged with Roaring Forties B.V. to form Spidron Weco B.V.

After completing the study drilling and petroleum maintenance techniques in Den Helder Tom started off working in the field in 2002 as MWD Engineer and Directional Driller internationally for Transmark-EDS. Simultaneously he learned the skills of drilling engineering by supporting in the office on well planning and drilling optimalisation.

As from 2012 Tom started his own drilling consultancy business. He worked as drilling supervisor and drilling engineer in both the oil & gas as the geothermal energy industry. During this period Tom has been responsible for the day to day project management for the delivery of turn-key geothermal projects, on- and offshore drilling projects, work over projects and well design for companies as Eland oil&gas, TAQA, Tulip, Daldrup, California Wijnen Geothermie, RWE DEA.

Since 2018 Tom is a member of the Spidron Weco team as project manager and well engineer.

After completing his study Maritime Officer (BSc) on Terschelling, Vincent started his career as a Marine Engineer on board product/chemical tankers in 2001. He sailed worldwide for several years. In 2006 he moved to an onshore position as Quality, Safety and Security Manager, focussing on development, implementation, maintenance and auditing of QHSSE management systems. Including coaching of ship crews.

In 2011 he switched to an onshore natural gas E&P company starting as HSE coordinator. Vincent was responsible for the HSE department in 2012 as part of the Dutch Management Team. In 2014 he was actively involved in an operational reorganization which created a new opportunity to further build on an integrated approach of QHSE and operations. As Area Supervisor, he gave leadership to operation- and maintenance teams responsible for the safe production and treatment of natural gas within multiple assets.

In 2018 Vincent started his own company focusing on QHSE and operational consultancy and ISO 9001, 14001 and 45001 audits within various sectors including energy (oil, gas, geothermal), industry and recycling. Since this time Vincent has been part of the Spidron Weco team as QHSE Advisor.

In 1995 Marco started his career as Supervisor Cementing and Downhole Tools at Dowell-Schlumberger.

In 2000 and 2001 he was a multifunctional operator at Tristar Oilfield Services, working as a Cementing Supervisor and Coiled Tubing and Nitrogen Operator. After these years he joined Schlumberger again as a Cementing Field Specialist 2 for more than four years.

Switched his career to Coiled Tubing and worked 2½ years as a Coiled Tubing Field Specialist 3 for Schlumberger and 3 years as Coiled Tubing Supervisor for Baker Hughes. From 2011, he has engineered and supervised Well Intervention jobs as a CWI Wells engineer at Shell in Assen.

In 2014 he joined Neptune Energy in Germany as a Completion & Well Intervention Supervisor. In 2019 he started his own company Wellpro Consultancy and since April 2021 Marco is a member of the Spidron Weco Team as Well Engineer and Project Manager.

In 1995 Johan started as a Chemical Analyst (BSc) first at FRIMA later named as Frisia Zout. In 1999 he became the quality and environment manager at Frisia Zout. He was responsible for realization of permits for existing and new projects, and for the licenses to operate and also responsible for the laboratory of Frisia. In this role he had contact with the authorities of all levels, National Government, provinces, municipalities and water authorities. As a Q&E specialist he took care of the ISO-systems within Frisia (ISO 9001, 14001, 50001 GMP+,HACCAP etc.). He was also involved to implement a FSSC 22000 system at Frisia . During his time at Frisia, he realized the permits for exploring rock salt under land (2003) and in 2016 for mining of rock salt under the Waddenzee, MER included.

In June 2020 he joined Huhtamaki at Franeker as QESHE manager. Main obligation was a revision of the environmental permit, ISO certification 9001, 14001, 45001 and 50001. Also certification of BRC packing version 6.

In January 2023 Johan joined the Spidron Weco organization and will be a consultant for permits and management systems.

Minke is a Mining and Raw Materials Engineer (MSc TU Delft). She is an adventurous, versatile professional, with extensive experience in capital intensive industries in a wide variety of roles (technical projects, consulting, purchasing, maintenance, management).

Minke has started her career in 2001 at Corus, as account manager coke supplies. Since then, she has worked, amongst others, for Shell as Maintenance Supervisor Excellence and Production Programming Lead (2014-2019) and at DSM she was manager Maintenance Engineering and Facilities (2019-2023).

Minke has also competed in various sailing challenges, such as the Ocean globe Race leg 1 Southampton to Cape Town, the Rolex Fastnet race and the North Sea Triangle Challenge. Amazing adventures which ask for leadership, tactics, creative problem solving, adaptation and teamwork. Al these experiences have given Minke a keen eye for processes and people.

Steve Nas is a senior well engineer with over 45 years of international experience in drilling and well engineering. Born in Nijmegen, Netherlands, and now living in South East Asia, he holds a master’s degree in Well Engineering from Robert Gordon University in Aberdeen. His expertise spans managed pressure drilling (MPD), underbalanced drilling, geothermal and HPHT well design, deepwater drilling, and CCS well integrity assessments.

Beginning his career in mudlogging in the late 1970s, Steve transitioned into freelance wellsite engineering across the Middle East and Africa before joining Shell UK in 1988, where he contributed to early horizontal and tieback wells in the SNS. He later became a key figure in the evolution of MPD and UBD technologies while with Weatherford, pioneering the first pressurized mud cap drilling from floaters and leading the first ultra-deepwater MPD operations in Indonesia.

Steve served in senior advisory and engineering management roles at Schlumberger, Wild Well Control, and Scanpower Technologies, delivering dynamic kill plans, well control training, and advanced modeling for blowout contingency and geothermal operations. As an independent consultant since 2017, he has led numerous geothermal and CCS well integrity assessments, deepwater abandonment reviews, and advanced drilling projects.

He is a recognized industry authority and prolific SPE contributor, having authored more than 25 technical papers. He is an independent well examiner, serves on the IADC Geothermal Committee, supports IWCF as a technical advisor, and remains an active instructor of well engineering related drilling courses worldwide.

After completing the study integrated safety science, and higher safety science, Ryan started his career as a HSE technician and later as a HSE representative & advisor at Vermillion Energy Netherlands. He advised on safeguarding the safety, health and environment of various activities.

Ryan conducted internal & external audits; incident investigations and did trend analyses on the incident registration system. He created HSE awareness and set up toolboxes and campaigns as well as providing training in Disaster Management Plans and SCAT incident analysis. Ryan has worked on setting up RI&E, and Chemical Management systems and process compliant based on occupational hygiene strategy. He has updated HSE Management Systems - working compliantly by setting up or updating procedures/work instructions based on internal and/or legislative changes. From 2021 to 2023, Ryan has worked as an HSE Consultant for Bureau Veritas, Amersfoort, where he advised and supported companies on HSE issues and conducted ISO 9001 / 14001 / 45001 audits. Since 2023 he has been working for EBN SCAN, and as an HSE advisor D&C EU at Vermillion Energy. As from 2023, Ryan also started his own QHSE consultancy business; IMPREVENT.

Ryan is a skilled and driven safety expert with over nine years of experience in the oil, gas and geothermal industry. Ryan has a pragmatic mindset; he likes to take on new challenges and he gets energy from continuous improvement. Since 2024, Ryan has been part of the Spidron Weco team as an HSEQ Consultant.