Petrogenium Team

Tammo Beishuizen
Founder and Managing Partner

Frans van den Berg
Principal Consultant Residue Upgrading, Crude Oil and Product Quality

Wim Bond
Principal Consultant Fouling Abatement, Fluid Flow & Solid Handling

Wim Bosch
Principal Consultant Reforming & HF Alkylation

Peter Bost
Principal Consultant Hydrocarbon Supply Chain

Tom Chupick
Principal Consultant Carbon & Energy Management

Lucibar Davalillo
Principal Consultant Delayed and Flexi Coking

Rhys Davies
Client Director & Practice Lead Project Realisation

Thomas Diehl
Practice Leader Petrochemicals & Digitalisation

Charu Ehrenreich
Senior Consultant Hydroprocessing, Sustainable Fuels and Green Chemicals

Jörn Falbe
Practice Leader Manufacturing Excellence

Thomas Franzen
Practice Leader Upstream

Gary Hays
Client Director/Managing Consultant

Eugen Hofmann
Managing Consultant Refinery Technologies / Primary Distillation

Egbert van Hoorn
Principal Consultant Amine Treating and Sulphur Processes

Himanshu Joshi
Principal Consultant Heat Transfer and Fouling

Birgit Jürgensen
Managing Consultant Economics, Scheduling & Supply

Stefan Kardos
Partner

Ruud Keller
Principal Consultant Laboratory, Analytical and Product Quality Services

Ton Kloth
Principal Consultant Base Chemicals

Gerhard Köbe
Managing Consultant Downstream Commercial

Ulrich Koss
Principal Consultant Syngas, E-fuels & Carbon Capture

Anna Kryzhanovskaya
Client Manager

Bert van der Linde
Principal Consultant Hydrocracking, Hydrotreating and Bitumen Processes

Selwyn Maduro
Principal Consultant

Jari Marci
Principal Consultant Distillation, Thermal Conversion and Gas Processing

Paul Newman
Client Director/Managing Consultant

Paul van Oers
Principal Consultant

Frank Öhlschläger
Principal Consultant Treating and Sulphur Processes

Danny Peferoen
Principal Consultant Planning & Scheduling

Jan Pranger
Principal Consultant Industrial and Process Safety

Jay Rajani
Principal Consultant

Jannes Regterschot
Client Director/LNG Business Improvement Consultant

Bob Scheffer
Principal Consultant Refinery Catalyst Technology & Hydroprocessing

Colin Schaverien
Practice Leader Renewable Resources

Koeno Siemons
Practice Leader Commercial & Retail

Brigitte Sölla
Principal Consultant Aromatics Extraction and Distillation

Klaas Wieringa
Practice Leader Margin & Sustainability Excellence

Alex Woldhuis
Client Director

Kitti Wongsinphaiboon
Client Director

Koeno Siemons
Practice Lead Commercial & Retail
Koeno is a passionate and international senior executive with many years of experience in strategic marketing, new markets & brand licensing markets, business development, business operations & transformation, change management and with an interest in mobility and the energy transition. During his extensive and international career in BP Oil, he has developed and repositioned businesses in Europe, South Africa, South America and Asia. Also actively leading operational units in some geographies and businesses like B2C retail, B2B commercial fuels and B2B Fleet management. In addition, he has relevant experience in strategic head office environments and related activities. He has a clear track record in getting businesses from concept to competitive operational levels including management of multi-cultural and diverse teams. Most recently the creation of a new B2C retail fuels business in India, Indonesia and Mexico. In 2021 Koeno left BP and joined Petrogenium in 2022 with responsibilities including leading the downstream practice for marketing & customer focused businesses.

Himanshu Joshi
Principal Consultant Heat Transfer and Fouling
At Shell he was the SME for fouling and heat transfer technology (enhanced heat transfer). As part of the fouling work, he designed and led a program to test fouling at a pilot-plant scale, resulting in the development of a fouling predictive method unique in the refining industry. He spent several years in overseas offices (Malaysia, India, Canada) training and mentoring new recruits and building the capabilities in the heat transfer discipline.
In the technology area he has worked on major R&D projects to develop new cooling techniques for LNG facilities and to develop heat exchanger monitoring techniques. He is intimately familiar with all aspects (design, troubleshooting, reliability, maintenance) of oil & gas heat exchangers, in all business segments. He has had two assignments at operating plants, and has served on API Standards committees, on the HTRI (Heat Transfer Research Inc.) Technical Committee, and on a couple of HTRI task forces. With both employers he developed and taught training classes related to heat exchanger design, troubleshooting, and fouling.

Jannes Regterschot
Client Director/LNG Business Improvement Consultant
Jannes Regterschot joined Petrogenium on 1 Sep 2021 as Client Director, with focus on LNG facilities and upstream processing. He will also work as consultant LNG Business Improvement. During the previous 31 years he held postings with Shell in The Netherlands, Malaysia, the UK and the US and worked for Malaysia LNG and Nigeria LNG. His activities included facility design, conceptual studies, operations support, technical advice, project development, and project execution. The last 12 years he worked as a service manager dealing with asset management for various LNG facilities. He considers himself a team player and is used to interacting with all levels in a client organisation.
Building trusted relations with colleagues and clients is essential to create a good understanding of issues and needs and to create continuity in support. Addressing the right customer needs and making the useful contributions represents a major part of a successful outcome. Disciplined execution and proper communication will guarantee a successful delivery. Jannes enjoys working with so many experienced colleagues (many of whom he already knew) and to be relevant in this ever-changing industry.
When not at work, he enjoys staying fit through a wide variety of sports, such as tennis, cycling, running, skiing and a bit of fitness. He likes gardening and (small) jobs in and around the house. He loves to travel with his wife Veronique and at times with both their sons.

Kitti Wongsinphaiboon
Client Director
In addition to a genuine interest in the opportunities and challenges faced by clients, he has an excellent understanding of technical aspects and of the local, cultural, and political landscape – all essential in ensuring the successful delivery of technical/commercial support and for building valued partnerships.
He has built up a formidable background in his 24 years working for international engineering and contractor firms in project delivery, technical support, and business management roles in the O&G and Chemical sectors.
He contributed to shaping Midstream and Downstream improvement programs, scoping support for these programs and managing delivery to the full satisfaction of the clients and stakeholders involved in the region.
Next to working for Petrogenium, he is also leading his consulting firm to support capital projects in process plant industries in Thailand.
He enjoys travel and taking road trips with his wife and two daughters.

Tom Chupick
Principal Consultant Carbon & Energy Management
Tom has almost four decades of experience, with a foundation in refinery technologies and operations that has helped a wider range of industries improve energy efficiency and develop credible decarbonisation roadmaps.
Refinery roles included operations, technical support, projects and management roles on-site in three refineries (Petro-Canada, Shell and a JV) which had different approaches and work processes.
Central office roles involved >100 site assessments across all Shell businesses and selected partners. This led to the consolidation of best practices, tools, and work processes to enhance the implementation of improvement projects and energy management systems.
Tom’s last 5 years in Shell as a Global Principal Technical Expert in Decarbonization focused on developing staff capabilities, assurance, and leading assessments at complex sites.
In 2021 Tom took early retirement from Shell to join Petrogenium as Principal Consultant.

Rhys Davies
Client Director & Practice Lead Project Realisation
Rhys is an experienced and versatile consultant & manager in operations, asset management, engineering and projects. He has extensive experience in global consultancy in the oil and gas business. He has innovative, commercially focused and well-developed business management capabilities combined with wide experience working across cultures, functioning at all levels and managing / motivating teams to deliver action and results.
He initially joined Shell in 1988 working in downstream refining and chemicals in asset manager and projects before moving to major LNG project management in 1999 and later being responsible for the assurance of Shell’s global gas and LNG project portfolio. In 2001 he joined Shell Global Solutions developing and leading integrated business improvement programmes to 3rd party clients globally. Latterly he led Shell’s technical and operational support activities to Petroleum Development Oman before joining Asab Group as a Director in 2018 prior to joining Petrogenium in 2021 as Project Excellence Practice Leader.
Outside of work, Rhys enjoys staying active – he plays football, mountain bikes, and rows, as well as spending time enjoying the cultural landscape of the Netherlands.

Thomas Franzen
Practice Leader Upstream
Thomas is a senior professional within the oil & gas upstream business and has a passion for the exploration & production business and project management. After graduation in 1992, Thomas launched his career as a petroleum engineer in Germany and held several technical and leadership positions within multinational companies. In between he managed his academic career and achieved his Ph.D. with summa cum laude in 2012.
Since then, as entrepreneur of the Consultancy Petronate he has consulted on international projects within the North/Norwegian Sea, MENA as well as GCC and cooperates as Managing Consultant Upstream with Petrogenium. During his career he has become an upstream expert with strong expertise in reservoir management, production optimisation and he has utilised his profound expertise facilitating Integrated BlueHydrogen projects from feedstock to CCS.
He served as SPE Chapter President in South Africa and as Faculty Sponsor at the Institute of Technology Berlin and was granted the lifetime membership of the association in 2016. Away from work he enjoys indulging his loves of sport and travel, as well as just about anything that exercises his imagination.

Selwyn Maduro
Principal Consultant
Selwyn is a seasoned, well-qualified, dedicated, results-driven, proactive, and dynamic Refinery Downstream professional with more than 30 years of comprehensive experience. He is known as an innovative self-motivator with a proven ability to create strategies, implement changes, and set up sustainable management structures with the goal of implementing continuous improvements. Selwyn is able to multitask and to manage a high-performance workforce. He is recognized as a superior communicator and for his ability to work well under pressure and interact effectively with people at all levels within an organization. Selwyn possesses high personal standards and consistently leads teams to achieve objectives by applying a working attitude with a strong emphasis on professional relationships based on trust and respect.

Jay Rajani
Principal Consultant
Dr. Jay Rajani worked in Amsterdam, The Hague, and London for Royal Dutch Shell Group of Companies for 33 years. He started his career in the Shell Research Laboratories in Amsterdam where he was involved in the development of refinery burners/furnaces. He later moved to Separation Technology. He worked on the development of conventional as well as membrane-based gas-liquid and liquid-liquid separators. From 1987 to 2005 he worked in the Gas/Liquid Treating and Sulphur Processes department as Principal Technologist, providing technical and operational excellence to all gas plants and LNG plants that were operated or advised by Shell. His last position (2005 to 2010) was as a Lead Process Engineer with Qatargas 3&4 LNG Project (first with EPC contractor in Japan and then in Ras Laffan in Qatar). The last three years of the project involvement was in the construction, commissioning, and start-up of the 4 LNG trains, each producing 7.8 mtpy LNG. From 2011 to 2014 Jay worked with SBM Offshore in the Netherlands. He sat up a Gas Processing Department and trained young graduate engineers. He was also involved in the development of gas treating modules for FPSO and FLNG.
Jay is now an independent consultant and a course instructor with PetroSkills|John M. Campbell.

Gary Hays
Client Director/Managing Consultant
Gary is a highly experienced international HR professional but also has extensive leadership, business, line management, strategy, R&D, and supervisory board experience.
He specialises in change and talent management and he enjoys helping individuals, teams, businesses (and HR organisations) develop their people and leadership competencies, to improve the business performance.
He particularly understands the people challenges engineers and scientists (and companies) can have in leading chemical, engineering and scientific organisations.
Gary worked at Shell for over 30 years in global HR, technology, business, strategy, project management, and leadership roles, many of which were in Shell Chemicals.
For the last 10 years Gary has consulted for mainly technological companies, ranging from the largest chemical companies in Russia and the Middle East, Kazakhstan’s state oil company and New Zealand’s biggest company, to a series of projects for the European Space Agency.
Gary has frequently demonstrated that he can move between strategic, tactical, and hands-on with ease. He is the author of the recently published book ‘People Matters, People Matter: Personal Experience, Observations & Tools for the Management of Talent and Change’.

Danny Peferoen
Principal Consultant
Danny studied Chemical Engineering and Agricultural Industries at the University of Ghent (Belgium). He started his career in the Netherlands at Shell R&D working on producing liquid fuels from biomass. He moved into R&D of refinery processes and later into modelling.
He is a passionate world-class expert with 35 years international experience in Crude Oil, Refinery Planning and Masterplanning, Process Modelling, LP Modelling, and Optimisation Best Practices.

Ulrich Koss
Principal Consultant Syngas, E-fuels & Carbon Capture
Uli (Ulrich) is an internationally renowned technology leader with almost 30 years of experience in oil & gas and energy. He combines scientific excellence with hands-on and dirty-boots experience in the engineering, commissioning, and troubleshooting of process plants from lab to world scale.
Uli loves to work in an international, multicultural arena. For the past two decades he has been a passionate promoter of carbon emission abatement and sustainable fuels.
Leading Lurgi’s gas technology division he was paramount for Lurgi’s success in syngas generation & clean-up, hydrogen, and pre-combustion carbon capture. As a member of Alstom’s senior management he led a world-class R&D taskforce developing CCS solutions for power and industry, among them post combustion and oxyfuel technologies. Later, he focused on large-scale methanol and ammonia synthesis, along with Power-to-Synfuels and Power-to-Chemicals technology.
Uli is a passionate tennis player – focusing on his team, but also boasting recent top rankings in (very, very local) single tournaments.
Paul van Oers
Principal Consultant
Paul worked 38 years for Shell, where he had different roles in managing product quality for (bio)fuels, chemicals, bitumen, base oils, and waxes through the supply chain. He has worked on strengthening the product quality assurance aspects, training, and auditing both internal and external customers involved in the management of product quality.
In his free time Paul likes to do some running and play bridge.
Lucibar Davalillo
Principal Consultant Delayed and Flexi Coking
Lucibar is a passionate process engineer with many years of experience in refinery and mid-stream process, technology design, start-up, operation, research & development, and customer unit support. His specific areas of expertise cover residue upgrade technologies with an emphasis on Delayed Coking and Flexicoking. Lucibar has successfully designed and revamped numerous deep conversion units including novel design concepts and energy integration schemes as well as extensive shutdown and start-up experience.
Lucibar’s adaptive leadership through effective team management, projects, unit shutdowns, turnarounds, commissioning and start-ups has contributed to his success while providing excellent results to several companies and clients.
Beyond work, he enjoys quality time with his family and especially his two beautiful grandkids.

Peter Bost
Principal Consultant Hydrocarbon Supply Chain
Peter studied Applied Mathematics at the Technical University of Eindhoven. During his 40+ year career in Shell his main focus was on improving gross margins of customers by optimising their hydrocarbon supply chain. He participated in supply chain improvement projects with customers in over 30 counties – both inside and outside Shell. Optimising the hydrocarbon supply is a combination of 1) solving complex models, 2) generating accurate data, 3) developing business processes, and 4) improving business economics acumen in companies. His strength is in the possibility to split complex supply chain problems in these 4 pillars.
In his private life Peter enjoys driving his 82 year old Skoda and spending time with children and grandchildren.

Wim Bond
Principal Consultant Fouling Abatement, Fluid Flow & Solid Handling
Wim is an industry recognized world-class expert with more than 35 years of experience in equipment engineering on fluid flow, filtration, solids handling and equipment fouling abatement, decontamination, mothballing, recommissioning, and process safety of refinery flare systems.
Wim enjoys sharing his deep know-how and experience in a pragmatic and hands-on way.

Ton Kloth
Principal Consultant Base Chemicals
Ton spent his entire Shell career of 40 years in technology, operations, R&D, HSE and project functions in the petrochemical industry and central technical support organisations.
He has been active within Shell sites as well as in joined venture and 3rd party operated facilities. During those years he obtained in-depth project cooperation experience with all main ethylene contractors in the world.
Ton is an industry recognised technology and operational world-class expert in steam cracking as well as for catalytic processes for the production of light olefins. He has been involved in all aspects, including feasibility studies, configuration studies, rejuvenation/debottlenecking studies, detailed design, start-up and commissioning, operations, and operational support.
As Subject Matter Expert (SME) Olefins, Ton has particular skills in the Oil – Chemical Integration (OCI), combustion systems (large pyrolysis furnaces), energy recovery systems, primary fractionation/heavy oil/residual oil systems, large turbine/compression systems, deep chilling-cooling equipment and process, fractionation, operations, safety and environment. This is all based on sound understanding of thermodynamics, physics, and process engineering.

Ruud Keller
Principal Consultant Laboratory, Analytical and Product Quality Services
Ruud knows how to achieve outstanding operational excellence in laboratories: top quartile performance. For more than 25 years he was responsible for laboratory design and operations at varying scales for oil refineries, chemical plants, and LNG facilities in different countries. He enjoys developing laboratory staff and sharing his know-how and best practices with our clients in the field.

Wim Bosch
Principal Consultant Reforming & HF Alkylation
Wim worked at Shell for 35 years in training, technology, and operations functions in both oil refineries and central office technical support organisations. Hence, he has a broad background in the technology, operation, economics, and organisation of oil refineries.
Between 1999 and 2009 Wim was course director of Learning and Development, responsible for developing and delivering training courses on Hydroprocessing, thermal cracking, Reforming, and HF Alkylation.
Wim has lectured all over the world (Europe, North America, Latin America, the Middle East, Asian Pacific, and Africa) delivering numerous courses for both Shell and non-Shell personnel.
Wim has also participated in many energy audits for refineries in Europe, the Middle East, and the Far East.
Credentials
Graduated in Chemical Reactor Engineering at the Technical University of Twente in 1973 (Master of Science, ir).

Jan Pranger
Principal Consultant Industrial and Process Safety
In 1985 Jan joined a major Dutch engineering and consulting company. Over a 12-year period he acquired extensive consulting and design skills in many branches of industry. Eventually Jan shifted his consulting activities to industrial and process safety.
In 1998, Jan started his private consulting business. In 2004-2005 he followed a postdoc study in Management of Safety, Health and Environment (MoSHE) at Delft University of Technology. Jan is also an accredited Tripod Beta Assessor, Practitioner, and Trainer.
Credentials
Degrees:
• Master of Safety, Health and Environment, Delft University of Technology (2005)
• M. Sc. Chemical Technology, Delft University of Technology (1987)
Registrations:
• European Network of Safety and Health Professional Organisations, EurOSHM Registration: 11733530659
• Tripod Beta Assessor, Trainer and Practitioner, accredited by the Stichting Tripod Foundation

Jari Marci
Principal Consultant Distillation, Thermal Conversion and Gas Processing
Jari is a passionate process engineer with many years of experience in Refinery and Mid-Stream Process Technology design, licensing, start-up, operation, research and development, and customer unit support. His specific areas of expertise cover residue processing technologies with an emphasis on visbreaking and thermal cracking. Jari has successfully designed and revamped numerous thermal conversion units including novel design concepts and energy integration schemes as well as extensive shutdown and started-up experience. He is familiar with troubleshooting various visbreaking and thermal cracking processes inside and outside Shell. Besides his core competency and admiration for the black-side of Refining, he acquired expertise in gas treating, general gas processing, and distillation.
Jari reached his level of expertise whilst working for Shell in Germany and Shell’s technology consulting team for Downstream and Midstream Processes in the Netherlands where he was responsible for a global Shell, Joint Venture, and external client base.
In 2018 Jari left Shell and joined Petrogenium as Principal Consultant Thermal Conversion Technologies and Gas Processing.

Gerhard Köbe
Managing Consultant Downstream Commercial
Gerhard is an all-round commercial expert of the Downstream Oil Industry. He developed his extensive expertise during 35+ years of hands-on work in various positions for Shell and Shell Joint ventures. Despite being based most of his career in Germany, he for many years successfully led international sales teams across Central and Eastern Europe.
Gerhard is very passionate about maximising value creation for customers and has an outstanding track record of success in a variety of projects in Business-2-Consumer, Business-2-Business sales, marketing, and merger and acquisition support.
Gerhard joined Petrogenium in 2017 as Managing Consultant.
Throughout his career Gerhard obtained very deep expertise in change management whilst leading complex company restructurings and joint venture integrations. He knows how to manage customer handover, harmonising of contracts, and integration of whole Customer Service Centers and their staff successfully.
He contributed and led highly sensitive commercial negotiations and acquired hands-on experience in lobby- and association work.
Gerhard operated in diverse and sometimes challenging multicultural environments: he knows the daily challenge of leading multinational teams.
Gerhard shares our passion of know-how transfer and enjoys passing on his extensive knowledge via tailor-made consulting or coaching activities.

Frans van den Berg
Principal Consultant Residue Upgrading, Crude Oil and Product Quality
Frans is a passionate leader, researcher, and world-class expert with more than 35 years’ international experience in Syngas Technologies, Catalysis, Residue Hydroconversion, Gas treating, Crude Oil, Heavy Fuel, Jet Fuel Product Qualities, and Emerging Technologies in the Heavy Oil field.
Frans held a variety of technology and managing positions in Shell and was for many years on the forefront of Shell’s innovation strategy of the “bottom-of-the-barrel” commercial products and upgrading technologies.
He authored and co-authored some 30 publications and presentations at international conferences and has 12 patents in his name.
He joined Petrogenium as Principal Consultant Residue Upgrading, Crude Oil and Product Quality in 2017.

Frank Öhlschläger
Principal Consultant Treating and Sulphur Processes
Frank is a world-class expert, with broad experience in gas and liquid treating aspects like Amine and Caustic Treatment, Sour Water Stripping, Sulphur Recovery, Tail Gas Treatment, and Adsorption processes.
Frank’s experience covers all relevant aspects from modelling and design (new units, revamp, debottlenecking), treating concept development, operation, troubleshooting, (pre-) commissioning, start-up, training seminars, and coaching.
Prior to joining Petrogenium, he worked for 28 years with Shell in various refining technology, leadership, project organization, and technology consulting positions.

Eugen Hofmann
Managing Consultant Refinery Technologies and Primary Distillation
Eugen is a very passionate technical leader and world-class process engineer with more than 40 years’ international hands-on experience in Refinery Process Technologies and Refinery Operations. In the world of refining he is in particular recognized as a world-class expert in the Distillation Technologies.
Eugen held a variety of leading positions in Refineries and Shell’s Technical head office in the areas of Distillation and Thermal Conversion Technology and Technical and Operational Management. Besides these technical roles he has extensive experience in being bottom line responsible for the HSE performance a country in that Shell operated.
After leaving Shell in 2006, Eugen worked successfully as an independent industry expert in the field of Distillation and Refinery Technology support. He joined Petrogenium in 2017 as Principal Consultant Refinery Technologies/Primary Distillation.
He is an expert user of various Distillation Process Simulation & Pinch Analysis and Process Integration tools.
Besides his very deep technical and operational expertise, Eugen understands very well the cultural impact of outstanding services delivery. Working in multicultural organisations and motivating, guiding, and coaching people to deliver a world-class performance is one of his major strengths. He worked for many customers in Europe, the Middle and in the Far East.
Egbert van Hoorn
Principal Consultant Amine Treating and Sulphur Processes
Egbert has spent almost his entire career of 35 years in the technical support and troubleshooting of Amine units, Sour Water Strippers, Sulphur Recovery Units and Claus Tailgas Treating Units for a variety of companies serving customers worldwide. He developed very successful training seminars for Amine and SWS as well as for SRU that he has presented more than 100 times.
Egbert joined Petrogenium in 2016, as Principal Consultant Sulphur and Treating Processes.
While working at many different operating sites in the Downstream Oil, Upstream, and Petrochemicals industry, he gained sound understanding of the integration of Amine, SWS, SRU, and Claus Tailgas Treating units in oil refineries and gas plants. He has expert knowledge on the presence of trace contaminants causing foaming, corrosion, or solvent degradation in the various sour streams.
In the Oil and Gas industry Egbert is considered a world-class Amine, SWS, and SRU expert who is very passionate about creating value for the customer and is willing to share his know-how in an open way.
Deep expertise in theoretical and applied Research and Development as well as operating experience of HDS units complement his profile.
Charu Ehrenreich
Senior Consultant Hydroprocessing, Sustainable Fuels and Green Chemicals
Charu is a passionate chemical engineer with 20 years’ international experience. Her specific areas of expertise are: Hydroprocessing and Hydrotreating Technologies, techno-economical refinery, chemical and bio process evaluations, biochemical and biofuel R&D design and implementation. Charu worked in Shell R&D and Shell’s Technology consulting team out of Amsterdam in the Netherlands for her global Shell and 3rd party customer base. Over the years she developed a deep expertise in many bio-based technologies she evaluated on behalf of Shell to be part of Shell’s renewable strategy. She coached many junior engineers and was hydroprocessing course focal point and lecturer at the Shell Open University.
As well as her very broad technical experience, Charu understands the cultural impact of outstanding services delivery very well and she worked for customers in Europe, in America, and in the Far East.
Brigitte Soella
Principal Consultant Aromatics Extraction and Distillation
Brigitte is a passionate leader in the field of Process Engineering, Refinery Technology and Operations. Over the last 30 years Brigitte obtained a set of valuable insights to all process engineering aspects whilst working internationally in the field of Refinery Process Technology Design and Operations.
In particular, Brigitte is recognized as a world-class expert in Aromatics and Distillation Technologies. She was responsible for many feasibility, configuration, rejuvenation, and debottlenecking studies to enhance value creation of one of the biggest refineries in Europe. In addition, she supported many Shell internal and external clients by delivering various feasibility, debottlenecking, detailed design, start-up and commissioning, operations and operational support studies or in-the-field jobs. Doing so she contributed actively to the margin improvement of many refineries in Europe and the Far East.
Brigitte knows how to facilitate a process engineering project from idea generation to successful start-up and she shares our passion for coaching young engineers in the field. Brigitte joined Petrogenium in 2017 as Principal Consultant Aromatics Extraction and Distillation Technologies.
Bob Scheffer
Principal Consultant Refinery Catalyst Technology and Hydroprocessing
Bob is a passionate chemical engineer with more than 30 years’ international experience in Refinery Catalyst Technology and Hydroprocessing.
His expertise areas are: Hydrocracking, ResidHydroprocessing, Refinery Operations, Catalyst R&D, Catalyst Manufacturing, Catalyst Analyses, Catalyst Technology Training, Gas-to-Liquids, Gas-to-Chemicals, and Research Management.
Bob is recognized as an international expert in Catalyst Technology: he is co-editor of the book “Catalyst Deactivation”, has been a speaker at major conferences (ACS, ERTC, BBTC, IDECAT etc.), a guest lecturer at Delft University of Technology, and is a member of the Board of the Netherlands Catalysis Society.
Birgit Jürgensen
Managing Consultant Economics, Scheduling & Supply
Birgit is an oil supply chain expert, combining technical understanding with deep experience in simulation and optimisation models to identify hidden margin opportunities in complex systems. She developed her unique expertise during 25 years in several leadership positions in Oil & Gas companies like DEA Mineraloel AG, Shell, and Enbridge. Her successes range from short term margin increase through introduction of new crude oils to speciality refineries to restructuring the unit set up of a refinery in response to specification changes and declining margins.
Her passion is to maximize value in fast-changing operational environments. She has successfully coached and introduced simulation and optimisation tools to planning teams in downstream and midstream sectors to improve margins. This includes optimisation software tools by vendors like Aspen and Haverly and well as simulation tools using discrete event, system dynamics, and agent based simulation components together with gamification approaches. She knows how to make the interfaces between technology, business and IT work and how to find business cases that deliver value.
She uses pattern recognition to identify strategic issues and translate them into pragmatic implementation steps. Experience in project management (waterfall and agile) and change management have been enablers in delivering projects to high satisfaction and with a keen eye on stakeholder management. In the end people deliver the bottom line.
Besides driving for safety, value and pragmatic solutions, Birgit has a deep interest in emerging technologies from renewables to artificial intelligence.
Birgit joined Petrogenium in 2017 as Practice Leader Supply Chain & Economics Excellence.
Paul Newman
Client Director/Managing Consultant
Paul has cross-functional capabilities and experience which will add value across a wide range of your customers’ businesses. He has a passion for Operational Excellence, HSE, and coaching and mentoring emerging talent. He has a hands-on approach to building trust and helping others grow and develop.
Paul has had a 40-year global career in refining and petrochemicals operational excellence, consultancy, commercial, and complex sales. He spent 35 of those years in Shell Downstream manufacturing leadership. Having served in an operational capacity for two decades as a refining/petrochemicals site manager, he can speak the language up and down the value chain.
After key positions in technical and operations management on large sites in Europe, Paul moved to a more of a strategic role in the leadership of Shell Global Solutions, Shell’s external consultancy.
More recently, he has worked as an external consultant for Bain & Co, Reliance Manufacturing Industries, and Head of Global Consulting Sales and Transformation for Yokogawa/KBC driving digital transformation for global clients.
Stefan Kardos
Partner
Stefan studied Chemical Engineering in Germany and started his career in refining in North Germany. After working in project management, process technology, operations, and consultancy for many Shell internal and external IOC/NOC clients he joined former colleagues on their successful journey with Petrogenium. Stefan holds an MBA from Rotterdam School of Management.
Stefan’s client work spans our entire client portfolio in the downstream oil, petrochemicals, upstream and renewable resources industries. As well as being responsible for service delivery and consultant engagement he heads our oil movement, hydrocarbon supply & logistics practice.
Beyond work, Stefan tries to balance his passion for good food with cycling. He enjoys wrestling with his children and being with friends.
Anna Kryzhanovskaya
Client Manager
Anna is a reliable partner combining solid technical background (MSc, Material Science) with extensive commercial experience. She has more than 15 years experience in international business environments, integrated experience in B2B technical sales, customer relationship management, business development, and marketing.
Throughout several years at Shell Anna acquired hands-on experience and completed extensive training in refining and hydro processing technologies as well as project management.
Anna is dedicated to maximising value creation for customers by understanding the customer’s business drivers. She successfully implements projects (within time and budget), gaining return customers and establishing long-term business collaborations – this is a result she is proud of.
Anna is eager to support complex project implementation by applying her knowledge and expertise.
Tammo Beishuizen
Founder and Managing Partner
After finishing his MSc. in Mechanical Engineering in Delft, The Netherlands, Tammo worked his entire career in the oil industry in technical, supply, advisory, and business development roles. He worked in technical and supply planning roles at Rotterdam-based BP and Shell refineries and in business development and performance improvement advisory roles at Jacobs Engineering and Shell Global Solutions. Tammo worked with various international oil majors, national oil companies, financial institutions and oil company service providers across the world. In 2010 he started his first business consultancy company which he sold in 2014. Petrogenium was founded in 2015.
Using Petrogenium’s network of world-class professional experts Tammo assumes the Integrator role to help clients in developing and implementing their journey towards margin, reliability and cost improvement.
Outside of work he loves sailing and enjoys good wine. He is married and has three children whom he loves to support from the hockey and cricket boundaries.
Alex Woldhuis
Client Director
Alex is a highly driven Client Director with solid experience in building trusting relationships at all organisational levels. In addition to a genuine interest in the opportunities and challenges faced by clients, Alex has an excellent understanding of technical aspects and of the local, cultural, and political landscape — all essential in ensuring the successful delivery of technical support and for building valued partnerships.
He has built up a formidable background in his 28 years working for Shell in project delivery, technical support, and business management roles for technologies in the O&G sector. He worked in a wide range of areas including Environmental Systems, Downstream & Chemicals, and Mid and Upstream businesses.
Alex contributed to shaping Upstream and Midstream improvement programs, scoping support for these programs and managing delivery to the full satisfaction of the clients and stakeholders involved globally.
Next to working for Petrogenium, Alex is leading a start-up that intends to conquer the world with the famous Dutch biscuits: ‘Stroopwafels’. He enjoys sailing, skiing, canoeing, and making road trips with his wife and two sons.

Thomas Diehl
Practice Leader Petrochemicals & Digitalisation
Thomas is a passionate technologist with many years’ experience in licensed technology inside plant construction companies. He has led a technology department, being responsible for process technology design, licensing, start-up, operational support (as licensor), and research & development.
His specific areas of expertise cover Aromatics Extractive Distillation; pX Production; Pygas and COLO Processing (overall concepts with Hydrogenation and Extractive Distillation), in Basic and Detailed Design phases; commissioning and start-up, troubleshooting, scouting and feasibility studies as well as customer training. Thomas has successfully designed and revamped numerous Aromatics ED units including novel design concepts and energy integration schemes as well as extensive first start-up experience. Besides his core competency he acquired expertise in Digital Process Data Evaluation in a cooperative project with an AI data company, improving the control scheme of the ED technology. Thomas reached his level of expertise whilst working for LURGI (AirLiquide today), Technip France, and Thyssenkrupp-UHDE/tk-IS.
In 2018 Thomas left tk-IS and worked as consultant for digitalisation (digital process data evaluation and ‘Digital Twin’ implementation). In 2019 Thomas joined Petrogenium as Principal Consultant Aromatics Extractive Distillation and is now Practice Leader for Petrochemicals & Digitalisation. In this role he executed several projects (including master planning) for Digitalisation in 2020 in the petrochemical and refining industry.
Klaas Wieringa
Practice Leader Margin & Sustainability Excellence
Klaas is an all-round refinery professional, combining a broad technology base with extensive experience in performance optimisation. He developed his world-class expertise during 34 years in various positions in Shell and work assignments to a great number of refineries worldwide (Shell, JV and non-Shell). He knows what makes a refinery successful and applied this knowledge during many margin improvement programmes, investment masterplans, and strategic studies.
Klaas is recognized industry-wide as a world-class professional who drives margin improvement, business value enhancement, and sustainability to support our downstream oil and petrochemicals clients. He is very passionate about sustainability in our industry and the energy transition of the world and supports us on the strategic direction of Petrogenium.
Colin Schaverien
Practice Leader Renewable Resources
Following his PhD in Chemistry in Bristol, and postdoctoral fellowships at MIT and UC Berkeley, Colin spent 30 years in various R&D and Innovation leadership roles in Shell.
Colin drives the renewables resource section. He supports clients particularly in the areas of biofuels, biorefining, and green chemicals where biorefining means the processing or coprocessing in standard refinery units. We have direct hands-on experience with dedicated hydrotreated vegetable oils (HVO) using 100% vegetable oils, fats, tallow, and other lipid-like feeds, as well as their coprocessing in both hydrotreaters and FCC units. We also have a lot of direct experience with the coprocessing of various lignocellulosic feeds to produce advanced biofuels. In addition, Colin also supports clients on R&D implementation and execution, technology maturation and scale-up from laboratory to commercialisation as well as technology assessment and technical due diligence.
In his free time, Colin tries to improve his single sculling (rowing) technique and enjoys travelling to off-the-beaten track destinations on vacation.
Bert van der Linde
Principal Consultant Hydrocracking, Hydrotreating and Bitumen Processes
Bert is a world-class professional with more than 35 years of work experience in hydrocracking processes, catalyst selection, gasoil hydroprocessing for low sulphur diesel production, and catalytic dewaxing. He also has extensive experience in residue hydroprocessing, residue thermal conversion processes, and bitumen manufacturing.
Prior to joining Petrogenium, Bert worked as an independent industry expert, Shell Global Solutions, Shell International, and the Technical University of Delft.
Bert helps technical and operations staff to translate complicated problems into practical solutions using the same pragmatic approach he employed for Shell and other IOCs/NOCs in Europe, USA, Canada, the Far East, and South Africa.
Jörn Falbe
Practice Leader Manufacturing Excellence
After his graduation in Chemical and Industrial Engineering, Jörn worked 15+ years in senior positions for three different Shell refineries in Germany and 10 years in various executive positions with PetroSA, the national oil company of South Africa and pioneer of GTL.
Jörn drives our Manufacturing Excellence section in Downstream Refining, Petrochemicals and Integrated Gas globally. He supports Clients on their journey towards true operational excellence. As an all-round professional with strong hands on skills and extensive experience in the implementation of margin improvement and business enhancement programmes he creates impact and ensures clients can capture lasting value.
Jörn’s passion is mastering organizational change and the implementation of business turnaround strategies. His unique approach to coaching and mentoring of internal talents in customer organizations to deliver sustainable results is well recognized in the industry.
Beyond work, Jörn enjoys spending time with his family and friends, in particular watching soccer matches with his three sons.