DecomBR - SPE Brazil Decommissioning Symposium Chairs 2025

Carlos Alexandre Castilho
Petrobras Decommissioning General Manager
Event Chair

Claudio Nunes
E&P Executive Director of Brazilian Institute of Oil and Gas – IBP
Event Chair

Dimitrios Magalhaes
Petrobras Executive Manager of Production Development Projects
Event Chair

Edson Valverde
Petrobras Decommissioning Strategic Support Manager
Executive Chair
- Wells
- Sub&Topside
- Welcome
- Opening
- Session 01
- Session 02
- Session 03
- Session 04
- Session 05
- Session 06

ChairGuilherme Castro
Petrobras – Senior Engineer
Guilherme Castro is a Civil Engineer with an MSc in Petroleum Engineer (Campinas State Univ. – UNICAMP). He joined Petrobras in 1987, where he acted offshore as OIM (Offshore Installation Manager); after that, had worked in many Campos Basin management positions as Planning & Marketing, Asset Manager, Technical Support, and Human Resources. Then moved to Petrobras’ central office to work as Facilities General Manager and now is working in Campos Basin partnerships as Bijupira Salema Decommissioning Project with Shell.

ChairDimitrios Chalela Magalhaes
Executive Manager of Production Development Projects

ChairClaudio Fontes Nunes
IBP – E&P Executive Director of Brazilian Institute of Oil and Gas

ChairCarlos Alexandre Belo Castilho
Petrobras – Decommissioning General Manager

ChairThiago Ormonde
ANP – Operational Safety Deputy Superintendent
Graduated in Petroleum Engineering, with a postgraduate degree in mechanical engineering and several courses in the safety engineering area , including: Instrumented Safety Systems (SIS), risk analysis (LOPA, FRA and others), and module I of the safety engineering certification by the French Petroleum Institute (IFP), etc.
At ANP since 2013, he was a technical advisor in the safety superintendence, general coordinator of safety audits and is currently the Deputy Superintendent of Operational Safety for the upstream.

ChairHumberto Romanus
Origem – EHSEQ and Integrity Facilities Director
Humberto Romanus, HSEQ and Integrity Facilities Director for Origem Energia since 2024, General Manager for 3R Petroleum from 2021 to 2024, 44 years in the E&P environment, having acted as General Manager of the Marlim Revitalization Project, HSE General Manager for Petrobras E&P, Asset Manager and Operations Manager in the Santos Basin Pre-Salt Area. OIM for several facilities in Campos Basin and managing positions for new facilities from project to first oil in Petrobras offshore basins.

SpeakerAlberto Carvalho
ANP – Operational Safety Coordinator for Rigs and Wells in E&P
Graduated in mechanical engineering (2005) and Master in Energy Industry Regulation (2009), both from Universidade Salvador. He joined the National Agency of Petroleum, Natural Gas and Biofuels (ANP) in 2010 as a Specialist in Regulation of Petroleum and Derivatives, Fuel Alcohol and Natural Gas. Since 2019 I have been working in the Operational Safety Superintendence, where, in 2021, he assumed the role of onshore production coordinator and in 2024 he assumed the role of E&P rigs and wells coordinator.

SpeakerMarcelo Victor
Petrobras – Well Abandonment Consultant
Marcelo Matos holds a Bachelor’s degree in Mechanical Engineering and a MSc degree in Decommissioning from the University of Aberdeen. He joined Petrobras in 2008 as Equipment Engineer and became a specialist in Petroleum Engineering in 2011. With a background as company man supervising offshore operations and as P&A Design Engineer, he is currently P&A Advisor for Offshore Wells at Petrobras’ corporate division and was responsible for coordinating the latest review of the Brazilian Industry Well Abandonment Guidelines.

SpeakerMarcio Felix
ABPIP – Heads the oil company EnP Energy and chairs the Brazilian Association of Independent Oil and Gas Producers
Electronic and petroleum engineer with extensive experience in the Brazilian energy sector. In addition to working for companies such as SLB, Petrobras, PPSA and ES Gás, he was Secretary of Development for the State of Espírito Santo and Secretary of Oil, Gas and Biofuels, Executive Secretary and interim Minister of Mines and Energy. He currently heads the oil company EnP Energy and chairs the Brazilian Association of Independent Oil and Gas Producers, ABPIP.

SpeakerFlavio Torres
IBP – E&P Operations & Maintenance Manager
Electronic and petroleum engineer with extensive experience in the Brazilian energy sector. In addition to working for companies such as SLB, Petrobras, PPSA and ES Gás, he was Secretary of Development for the State of Espírito Santo and Secretary of Oil, Gas and Biofuels, Executive Secretary and interim Minister of Mines and Energy. He currently heads the oil company EnP Energy and chairs the Brazilian Association of Independent Oil and Gas Producers, ABPIP.

ChairThais Helena
Petrobras – P&A Project Implementation Manager
Thais Helena Almeida holds a degree in Business Management and boasts over 26 years of experience, including 22 years for Petrobras. Throughout her O&G career, she worked in various domains such as Subsea Engineering, Project Management, Operations, Handover of Divested Assets, Human Resources, and Logistics. Currently, she serves as the Well Abandonment Project Manager, overseeing Petrobras’ entire Offshore Well Abandonment Portfolio.In addition to her responsibilities at Petrobras, Thais Helena is a mentor in several mentoring programs and a professor in MBA courses, where she shares her extensive knowledge and experience with the next generation of professionals. She holds a Master’s degree in Environmental Management, MBAs in Human Resources and in Sales, Negotiation, and High-Performance Results, as well as certifications in project management.Thais Helena firmly believes that outstanding results stem from empowered teams and clear objectives. Her leadership is characterized by a relentless pursuit of excellence and innovation, always striving to exceed limits and deliver extraordinary outcomes.

ChairLuigy Tiellet da Silva Filho
Petrobras – Decommissioning Project Manager
Luigy holds a degree in civil engineering, along with a postgraduate degree in petroleum engineering, an MBA, and expertise in project and general management. He has been managing projects for Petrobras since 2008. His extensive decommissioning experience encompasses a portfolio featuring platforms such as P-12, P-15, P-7, P-32, P-33, and P-26. Currently involved in Marlim Field revitalization, he oversees the removal of three FPSOs and three semisubmersible platforms scheduled for decommissioning by 2027, as well as the extraction of over 1,300 km of flexible pipelines and the abandonment of approximately 55 submarine wells from 2025 to 2030. Outside of work, he is a devoted father of four and enjoys exploring arts and spirituality in his leisure time.

ChairRodrigo Freitas
Trident Energy – Decommissioning Manager
Bachelor in Chemical Engineering by UFRJ and MBA in Project Management by FGV. Started my career in 2011 with Schlumberger India as a Cementing Engineer until 2013, then 5 years between field and technical career and until 2021 as Technical and Sales for Well Services (Cementing, Estimulation and Coiled Tubing). Since November 2021 working with Decommissioning Department in Trident as Engineer and in September 2024 assigned as Decommissioning Manager in charge of Wells and Pipeline Decommissioning campaigns.

SpeakerAfonso Terberga
Petrobras – Drilling Engineer
Afonso Teberga holds a PhD in production engineering from the Federal University of Itajubá, with an emphasis on data science and computational process simulation. With a focus on increasing productivity, he has worked on more than 15 simulation projects in the manufacturing, mining, steel, healthcare, and oil & gas sectors. In addition, he has published more than 30 articles in national and international journals and conferences. Afonso joined Petrobras in 2022, where he is part of the management team for the company’s abandonment campaign.

SpeakerDanilo Colombo
Petrobras – Advisor
Danilo Colombo is a Mechatronic and Petroleum Engineer, serving as a Technical Advisor in Reliability and Risk Assessment at Petrobras and a Research Coordinator at the Petrobras Research Center (CENPES). Danilo holds a Ph.D. in machine learning applied to reliability, a master’s degree in well integrity and management systems, and an MBA in Investment Management. He is also currently enrolled in a Data Science specialization.Certified as a Reliability Consultant by Compass, Danilo has developed dozens of computer programs and has published extensively, including papers, book chapters, and presentations at workshops and congresses worldwide. Danilo is a member of the Brazilian Association of Risk Assessment, Reliability, and Process Safety (ABRISCO), the Society of Petroleum Engineers (SPE), and the Brazilian Petroleum Institute (IBP), where he is currently coordinating the development of the Brazilian Guideline for Risk Assessment for Wells

SpeakerAndre Abrego
Petrobras – Mechanical Engineer
André is a Mechanical Engineer with a master’s degree in Fluid-Structure Interaction. He also holds a specialization in Mechanical Equipment and is currently pursuing a second degree in Information Systems. He works in reliability at Petrobras, specifically at the Petrobras Research Center (CENPES), with experience in data analysis, statistical modeling, and computational simulations applied to reliability engineering.

SpeakerPaula Constantini
Shell – Completion and Well Intervention Operations Engineer
Paula Costantini is from Rio de Janeiro, with a petroleum engineer with a degree from UFRJ and a master’s degree in mechanical engineering from the same institution. Specializing in well completion and intervention, she has 10 years of experience in the industry. Her career includes working as an offshore supervisor, as well as planning and executing intervention activities in the United States. She is currently leading the planning of the Bijupirá and Salema permanent abandonment campaign for 22 wells.

ChairCristina Ribeiro
SLB – Account Manager – Post-Drilling and Wells Intervention
Cristina is currently Account Manager in SLB for Post-Drilling and Well Intervention Services. With more than 24 years of experience in the O&G industries, in SLB, she has had a trully borderless career, spanning in assignents in different geographies, organizations and domains. Her exposure to several technical challenges, environments and a multidisciplinary competencies has attracted her attention to the challenges that the well abandonment ativitities bring is all views.Bachelor in Metalurgical and Materials Engineering and Petroleum Engineer by heart and experience, she is also a proud Member and Director of SPE Macae Section. The voluntary work closed an important gap related to her personal commitment to invest in develop a new generation of sucessors in the Energy Industry.Alongside the professional Cristina Ribeiro, there is a mother of 2 young boys, a wife and a devoted daughter, among several other titles

ChairFrederic De Meo
Trident – Senior O&G executive
Trident Senior O&G executive, graduated in mechanical & petroleum engineering and in business management. Wide knowledge and managerial experience gained from 20 years of field and work in operations, production, HSE and projects within E&P Companies in varied locations (West Africa, Europe-North Sea, Brazil).

SpeakerSaulo Aleluia Barcelos
Petrobras – Well Project Design Advisor
Saulo Aleluia has over 14 years of experience in offshore workover and abandonment operations. He is a qualified professional in various roles within the oil and gas industry, having served as an operations inspector and well intervention design engineer. Saulo currently serves as a plug and abandonment technical advisor for Petrobras, a leading global energy company. He plays a crucial role in supporting offshore interventions by providing valuable insights and guidance to well design and operations teams. Saulo’s in-depth knowledge and proficiency in this area contributes to the success of complex projects.

SpeakerLudmyla Barbosa
Trident Energy – well decommissioning engineer
Petroleum Engineer from UFRJ, Ludmyla is a well engineer at Trident Energy, where she is part of the decommissioning team handling the abandonment of the very first offshore wells in Brazil – a challenging and highly rewarding project. She primarily works on the development of abandonment projects and regulatory compliance.Having previously worked at ANP, she has a regulatory background, having participated in the implementation of the current Decommissioning Resolution and the analysis of decommissioning and well abandonment projects.

SpeakerFernando Bermudez
Archer – Mkt & Business Development VP
Fernando Zapata-Bermudez is the Marketing & Business Development VP at Archer Well Services, based in Stavanger, Norway. Fernando’s 25 years of experience in the Oil & gas industry spans in the areas of well integrity, well intervention and well abandonment, with research done on the subjects of well cementing and corrosion evaluation with multiple technical papers, Fernando’s worked in Brazil between 2010-2011 where he supported well exploration, well interventions and workover in the presalt fields offshore Brazil. Fernando Zapata-Bermudez holds a Bachelor’s degree in civil engineering and a MBA degree on business management from the IESEG school in Paris, France.

SpeakerRobson Paes
Petrobras – WO Engineer
Robson Paes is a well engeneer, based in Macaé, Brazil. Paes’s 15 years of experience in the Oil & gas industry spans in the areas of completion intervention on-shore and off-shore, with projects in complex heavy workovers cenarios. Paes’s worked in on-shore projects between 2011-2016 where he supported fracking sandstones and well completions projects. 2016 – till now Paes has working with well service off-shore completions strings and workover intervations. Robson Paes holds a Bachelor’s degree in eletronic engineering and well engeneer formation by Petrobras University.

ChairTiaraju Bernardi
Petrobras – Manager of Offshore P&A Operations
Civil Engineer (2000) from the Federal University of Paraná and post graduated in Business Management. In Petrobras since 2002, he has worked as drilling engineer and company man in onshore and offshore projects. Tiaraju also held several managerial positions in special services, land rigs operations, jackup rigs operations, well construction and workover operations. In 2007 he was part of the team that received the Prodep Award for Technological Innovation and in 2010 the Petrobras Inventor Award for use of the cross river rigs in oilfield operations. As active SPE volunteer member, is current SPE Bahia-Sergipe Section Chairperson and he served as member of several technical committees. Since 2023 he is working as P&A Offshore Operations Manager.

ChairLarissa Faria Nery
Petroreconcavo – Wells Integrity Coordinator
Well Integrity Coordinator at Petroreconcavo, +6 years of experience in company focused on reservoir, well integrity engineer and decommissioning.

ChairPaulo Sergio Bastos
Petrobras – Onshore Well Project Implementation Manager
Paulo Sergio Cristofhi Mesquita Bastos is a Mechanical Engineering graduate from the Federal University of Ceará, with specialized training in Subsea Engineering and Petroleum Engineering from Petrobras Corporate University. He holds a PMP certification and has a robust professional background with two years of experience in subsea operations and nine years in drilling operations, project management, and planning, completion, maintenance, workover, and abandonment of onshore wells at Petrobras. Paulo has served two years as Operations Manager for wells in Bahia and five years as Project Implementation Manager for onshore wells at Petrobras, demonstrating a strong commitment to safety and excellence in the oil and gas sector.

SpeakerKeith Henning
Halliburton – Global Technical Service Manager Production Solutions
Keith has been involved well intervention for over 25yrs with his career has taking him around the world with assignments in Europe, North America, South East Asia, Middle East and Africa, where he has undertaken roles in Engineering, Sales and Operations management in Well Intervention and Integrated Project Management. He is currently the Global Product manager for Halliburton Hydraulic Workover, based in UK.

Speaker Luiz do Ó
Petrobras – P&A Design Manager (Shallow Waters)
Luiz do Ó is an Electrical Engineer graduated from the Federal University of Pernambuco. He has nearly 15 years of experience in the Oil and Gas industry, having worked as a field engineer and desk engineer in Specialized Well Services, a Specialized Designer for Fishing and Coring, and managed various sectors of Construction and Workover of onshore and offshore wells in the Brazilian Northeast. He is currently a Sector Manager for P&A Design in shallow water wells.

SpeakerAlberto Carvalho
ANP – Operational Safety Coordinator for Rigs and Wells in E&P
Graduated in mechanical engineering (2005) and Master in Energy Industry Regulation (2009), both from Universidade Salvador. He joined the National Agency of Petroleum, Natural Gas and Biofuels (ANP) in 2010 as a Specialist in Regulation of Petroleum and Derivatives, Fuel Alcohol and Natural Gas. Since 2019 I have been working in the Operational Safety Superintendence, where, in 2021, he assumed the role of onshore production coordinator and in 2024 he assumed the role of E&P rigs and wells coordinator.

ChairMax Oyola
Shell – Well Operations Manager
23+ years experience in both Drilling Operations and Well Construction/Design. HSSE Critical Leader and FLBM. Proven leadership and risk management skills . Extensive experience in Deepwater Gulf of Mexico, Mexico DW and Brazil . International Experience (Brazil, Colombia, Suriname, Venezuela, Canada). Exploration, Appraisal, Development, Well Intervention and Abandonment Wells Program. Shell’s Round I/II Certifications, TA2, IWCD Level IV Subsea and Surface (Drilling and CWI), Advanced Well Control W320, MPD Ops. Trilingual English, Spanish (Native), and Portuguese.

ChairLeonardo Marazzo
Petrobras – Well Research and Development Manager
With over 20 years in the oil and gas industry specializing in well engineering, I hold a Mechanical Engineering degree from CEFET-RJ, a Postgraduate degree in Project Management from UFRJ, and certifications in executive programs from Fundação Dom Cabral. This year, I completed Stanford’s Executive Leadership Development program. Since 2003 at Petrobras, I have held management roles in operations, well design, integrity, and guidelines. Currently, I manage the Research and Innovation Portfolio for Well Engineering in Petrobras Research Center (CENPES).

SpeakerIgor Vieira Debacker
Shell Brasil – Lead Concept & Design Engineer
Electrical Engineer, 19 years of experience in the O&G industry, former Reservoir Evaluation Wireline engineer at SLB, then joined Shell as Well Completion Engineer, subsequently Subsea Intervention Engineer, Production Operations Engineer and Well Interventions Engineer.

SpeakerSam Perryman
Helix Energy Solutions – Operations Director
Sam is the Operations Director for Helix do Brasil, managing the Siem Helix 1 and Q7000 well intervention units. Sam also leads the team responsible for engineering, planning and executing integrated well decommissioning campaigns in Brazil for the Subsea Services Alliance. He has 15 years of international experience in well intervention, with roles in engineering, capital build projects and operations management. Sam holds a Mechanical Engineering degree from Heriot-Watt University and an MBA from Imperial College London, in the UK.

SpeakerMarcelo Victor
Petrobras – Well Abandonment Consultant
Marcelo Matos holds a Bachelor’s degree in Mechanical Engineering and a MSc degree in Decommissioning from the University of Aberdeen. He joined Petrobras in 2008 as Equipment Engineer and became a specialist in Petroleum Engineering in 2011. With a background as company man supervising offshore operations and as P&A Design Engineer, he is currently P&A Advisor for Offshore Wells at Petrobras’ corporate division and was responsible for coordinating the latest review of the Brazilian Industry Well Abandonment Guidelines.

SpeakerLaerte Duque
Equinor – Principal Well engineer
Laerte holds a BSc on Production engineering, and Reservoir engineering specialization. He has actuated on the Oil & Gas industry for the last 20 years starting as completion/ and intervention field engineering and over time working as leader in complex well completion/ and intervention projects in Halliburton, YPF, Repsol Sinopec, Repsol and Equinor on different countries in South America, Africa and Asia. Currently working as well operations engineer for Bacalhau/Raia operations.

ChairTiaraju Bernardi
Petrobras – Manager of Offshore P&A Operations
Civil Engineer (2000) from the Federal University of Paraná and post graduated in Business Management. In Petrobras since 2002, he has worked as drilling engineer and company man in onshore and offshore projects. Tiaraju also held several managerial positions in special services, land rigs operations, jackup rigs operations, well construction and workover operations. In 2007 he was part of the team that received the Prodep Award for Technological Innovation and in 2010 the Petrobras Inventor Award for use of the cross river rigs in oilfield operations. As active SPE volunteer member, is current SPE Bahia-Sergipe Section Chairperson and he served as member of several technical committees. Since 2023 he is working as P&A Offshore Operations Manager.

SpeakerEnrique Barrios
Shell – Wells General Manager
Mechanical Engineer from the University of Texas at Austin. 12 years of experience working for Shell in Brasil and Argentina in field and office positions including Wellsite Supervisor, Business Planning Lead, Operations Manager, and since last year working as General Manager for Well Operations.

SpeakerThais Helena
Petrobras – P&A Project Implementation Manager
Thais Helena Almeida holds a degree in Business Management and boasts over 26 years of experience, including 22 years for Petrobras. Throughout her O&G career, she worked in various domains such as Subsea Engineering, Project Management, Operations, Handover of Divested Assets, Human Resources, and Logistics. Currently, she serves as the Well Abandonment Project Manager, overseeing Petrobras’ entire Offshore Well Abandonment Portfolio.In addition to her responsibilities at Petrobras, Thais Helena is a mentor in several mentoring programs and a professor in MBA courses, where she shares her extensive knowledge and experience with the next generation of professionals. She holds a Master’s degree in Environmental Management, MBAs in Human Resources and in Sales, Negotiation, and High-Performance Results, as well as certifications in project management.Thais Helena firmly believes that outstanding results stem from empowered teams and clear objectives. Her leadership is characterized by a relentless pursuit of excellence and innovation, always striving to exceed limits and deliver extraordinary outcomes.

SpeakerThomas Filiponi
SLB – Managing Director Brazil
Thomas Filiponi, recently appointed General Director of SLB in Brazil, is a senior executive with more than 20 years of experience in the technology, energy, oil and gas sectors. He worked on international projects in operational areas and strategic leadership.Currently, leads the operations of SLB and OneSubsea in Brazil, having previously led the company’s business in the United Kingdom and Europe (among which operations with the company Shell in the North Sea, Holland and Albania), Kuwait, Qatar and Norway stand out, being in charge of remote, land and offshore fronts.

SpeakerRenato da Costa Lima
Foresea – Operation Director / Head Enterprise Risk Management / Head Diversity & Inclusion
Business Administrator and Chemical Engineer, with a Master’s degree in Thermodynamics and an MBA in Business Management. He began his academic career as a professor of Thermodynamics at UFBA and, since then, has built a successful executive career in some of the largest companies in the sector. He worked at Braskem, where he was Operations Manager and Director of Engineering, New Business and Market Intelligence. He then assumed the position of Business Director for Africa at Camargo Corrêa, leading international expansion processes on the continent. He was also Director of Engineering, Supply Chain and Operations at Ocyan, with a strategic focus on offshore operations. He is currently the Operations Director and Head of Risk Management (ERM) at Foresea, where he directly contributes to operational excellence and integrated risk management in operations in the oil and gas sector.
- Welcome
- Opening
- Session 01
- Session 02
- Session 03
- Session 04
- Session 05
- Round Table

ChairGuilherme Castro
Petrobras – Senior Engineer
Guilherme Castro is a Civil Engineer with an MSc in Petroleum Engineer (Campinas State Univ. – UNICAMP). He joined Petrobras in 1987, where he acted offshore as OIM (Offshore Installation Manager); after that, had worked in many Campos Basin management positions as Planning & Marketing, Asset Manager, Technical Support, and Human Resources. Then moved to Petrobras’ central office to work as Facilities General Manager and now is working in Campos Basin partnerships as Bijupira Salema Decommissioning Project with Shell.

ChairDimitrios Chalela Magalhaes
Executive Manager of Production Development Projects

ChairClaudio Fontes Nunes
IBP – E&P Executive Director of Brazilian Institute of Oil and Gas

ChairCarlos Alexandre Belo Castilho
Petrobras – Decommissioning General Manager

ChairRudimar Andreis Lorenzatto
Brava Energia – Executive Manager
Rudimar Lorenzatto is Executive Manager at Brava Energia in charge of Subsea, Wells and Reservoir Areas . The executive has 36 years of experience working in the Oil and Gas Brazil Industry with in-depth knowledge and Experience in Offshore Operation for Production Assets(Campos Basin and Pre-sal), Well Construction, Subsea Systems , E&P Production Development Projects, Strategic E&P Resources Management. Rudimar also worked at Petrobras Board where he spent 2 years working as a Chief Production&Development Officer.He also worked at Karoon Energy as Operations VP for 2 years before Brava Energia. He held extensive experience in Production Asset Management, Drilling and Subsea activities. He has a degree in Civil Engineering at Universidade Federal da Santa Maria-RS. Specialization in Petroleum Engineering from Universidade Petrobras. Specialization in Management at Insead and Columbia University, and MBA from Fundação Getulio Vargas-RJ. Specialization as a member of boards of directors by the Instituto Brasileiro de Governça Corporativa (IBGC).

ChairGuilherme Sargenti
Petrobras – General Manager of Espirito Santo Unity
General Manager of Petrobras’ Unit in Espírito Santo, Brazil with over 15 years of experience in the O&G industry. Sargenti leads operations generating US$6 billion in annual revenue and a workforce of more than 10.000 workers. Holding a Master’s degree in Thermal Power from Cranfield University in the UK, he has completed several executive education programs with a strong background in reliability, energy efficiency and operational excellence, contributing to significant advancements in Petrobras’ refining and production strategies. Additionally, Sargenti has been a dedicated educator in postgraduate programs for over a decade.

SpeakerMarcelle Oliveira
Brava Energia – Environmental Coordinator
Marcelle Oliveira is a Biologist, with a Master’s degree in Ecology and Natural Resources. She has been working with Oil and Gas for 17 years. She worked for Petrobras for 13 years, including Campos Basin and corporate area. Nowadays she works as an Environmental Coordinator at Brava Energia. She also has experience with environmental licensing in offshore oil and gas production and exploration, environmental monitoring projects, socio-economic projects, control of invasive alien species, divestment processes and decommissioning of production systems.

SpeakerKleber Nunes
Brava Energia – Project Implementation Manager
leber Nunes is a Petroleum Engineer, with master’s degree in Ocean Engineering. He has been working with Oil and Gas for 25 years. He has experience with subsea engineering, manufacturing, testing and installation of subsea equipment, oil production development projects in companies such as Petrobras (contractor), Shell (contractor), Enauta, 3R Petroleum and Brava Energia. Nowadays, he works as an ABEX Manager of Aratum at Brava Energia, responsible for the decommissioning project of the Aratum Field.

SpeakerAlexandre Barbosa
Post Operations and Post Ventures Asset Managers
Petroleum engineer with a master’s degree in production engineering from COPPE/UFRJ and a postgraduate degree in Business Management from FGV. He has been working for 20 years in the oil and gas segment for Petrobras, 18 of these in the Campos Basin and 2 years in the Urucu province in Amazonas.

SpeakerOswaldo Jose Rodrigues Netto
MODEC – Decomissioning Manager
Naval Engineer with over 10 years of experience in the oil and gas industry. Extensive work with companies specializing in the installation of subsea equipment and the operation of offshore units. Expertise encompasses a wide range of responsibilities, including project execution, contract management, and the optimization of offshore operations. Commitment to excellence and continuous improvement has been a driving force in the professional journey.

SpeakerLuiz Fernando de Noronha Junior
DNV Station Manager – Offshore units inn Operation Rio de Janeiro
Naval aechitect, acting in Classification activities since 1997. In DNV since August 2005 dedicated to Classification of Offshore units. Principal Surveyor to DNV Station Manager since 2017 June.

ChairMariana Colaço
Petrobras – General Manager of subsea revitalization and decommissioning projects
General Manager of subsea revitalization and decommissioning projects at Petrobras, responsible for the portfolio of about 70 projects and with expected abandonment expenses of 9 billion dollars in the next 5 years. She has 17 years of experience in the oil and gas sector, mainly in planning, management, contracts and operational management activities for platforms in the Campos and Santos basin.

ChairCristina Lucia Duarte Pinho
Cristina Pinho LTDA Board Member Consultant
She worked at Petrobras in several executive positions. She was Undersecretary of Oil, Gas and Energy for the State of Rio de Janeiro and Director of the Brazilian Institute of Oil and Gas. Today she is a business advisor and president of the board of the Luisa Pinho Sartori Institute. She is also dedicated to the cause of gender and racial diversity in corporations. She is vice president of the Women in Operations Institute and Co-Chair of Women Corporate Directors.

SpeakerAmanda Mendes Ribeiro
Petrobras – Subsea Decommissioning Projects Manager

SpeakerYasmin Sodre
Fugro – Commercial Project Manager – Uncrewed Solutions
Yasmin is a production engineer with an MBA in Petroleum and Energy from COPPE UFRJ. She has been at Fugro for 6 years, between Brazil and the USA, where his efforts have focused on advancing remote operations for conventional vessels. Certified as a PMP, Yasmin holds the position of uncrewed solutions manager throughout the Americas region, leading the introduction of the first USV in the region.

SpeakerVinicius Guimarães
Seagems – Project Engineer

SpeakerDécio Hashiguchi
ECB-MOTA ENGIL Subsea Project Manager
Decio is a Subsea Project Manager at Consórcio ECB – Mota Engil. He graduated in Electrical Engineering and has more than 40 years of experience in the Oil and Gas sector. He has extensive experience in construction, engineering, and logistics for offshore production platforms and subsea pipeline installations along the Brazilian coast and abroad. Decio has worked with Brazilian companies specializing in onshore and offshore pipeline construction.

ChairAline Cortizo Costa
Petrobras – Decomissioning Project Manager
Peço também incluir a mini bio dela na aba Chair&Speakers “Aline Cortizo is a Petroleum Engineer with over 20 years of experience in the oil and gas industry, including 5 years in offshore decommissioning. Project Manager for the first Petrobras FPSO undergoing green decommissioning in Brazil. Aline leads decommissioning projects at the Garoupa Field and platforms awaiting green dismantling. Graduated in Petroleum Engineering at Rio de Janeiro State University (UENF) and Executive MBA in Project Management at Fundação Getulio Vargas (FGV).

ChairAndré Cordeiro
MODEC – Fleet Strategic Manager
Andre Cordeiro has been working for the past 17 years at MODEC Group. Starting as the First Brazilian Operations Manager, Andre worked at many different areas like Asset Management and Mexico Country Manager leading MV34 FPSO MIAMTE and Mexico Company implementation. Graduated on Chemical Engineering at Rio de Janeiro Federal University (UFRJ) and on Executive Master Business Administration at Federal University COPPEAD. Andre has worked at Oil & Gas Industry for the past 35 years.

SpeakerThiago de Abreu Duarte Silva
Shell Brasil – FPSO Lead
Mechanical Engineer graduated in UGF, MBA on Offshore System in UFRJ, 18 years of experience in the Oil and Gas Market being part of Operations, Maintenance, construction, Pre-operation and decommissioning, working in Brazil and abroad. Married to a brilliant telecom engineer (Aline) and Father of two great kids (Theo and Duda).

SpeakerMarcelo Meira Dourado Nunes
SBM Offshore Group – Decommissioning Manager
Marcelo holds a Bachelor’s degree in Mechanical Engineering (UFBA) and a Postgraduate degree in Strategy & Innovation from Saïd Business School, University of Oxford (UK). With 20 years of experience in the oil and gas industry, he has held various management positions in Brazil and Angola, overseeing complex operations and developing strategic upstream O&G programs. Since 2017, Marcelo has been with SBM Offshore, managing FPSO operations. In his current role, he serves as the Group Decommissioning Manager. Marcelo also chairs both the IOGP FPSO Decommissioning Expert Group and the ABESpetro Decommissioning Technical Group

SpeakerCarlos Machado
ABS Director, Business Development and Decom Lead
Carlos Machado is a senior naval architect and business executive with thirty years of experience in the offshore production and shipyard industries. He holds a postgraduate degree in Safety Engineering from PUC-RJ and a degree in Naval Architecture and Marine Engineering from Universidade Federal do Rio de Janeiro. Carlos joined ABS as a surveyor in 2006 and subsequently moved into a project manager role. Currently, he serves as Business Development Director for South America with focus on Decommissioning, serving marine and offshore clients engaged in full lifecycle projects.

SpeakerTiago Alaor Moreira Fiorese
Arcelor Mittal – General Manager of Project Management
General Manager of Investment Project Management, Tiago has a solid international career, having worked as a maintenance engineer in France and as an engineering manager in Argentina. Throughout his career, Tiago also served as General Manager of Metallics Operations, where he led multidisciplinary teams and successfully managed complex projects.Currently, as General Manager of Investment Project Management, Tiago is responsible for coordinating and implementing investment strategies, ensuring the efficiency and profitability of projects. His expertise includes team management, strategic planning, and process optimization.Tiago holds a degree in Production Engineering and a master’s degree in the field.

ChairCarlos Victal
IBP – Sustainability Manager
High level experience, as Sustainability Manager, since 2003, with a proven track record in the oil, gas and energy industry. Skill and knowledge about Sustainable Development, Social Responsibility, ESG, Environment, Biofuels, Renewable Energy, NBS, Climate Change, DE&I, Energy Transition, Safety and Health. Professional with extensive experience in community engagement and social assistance with Graduate Studies in Engineering Environmental with a focus on Environmental Permission and Social Responsibility by the Federal Rural University of Rio de Janeiro.

ChairDaniele Lomba Zaneti Puelker
Petrobras – General Manager of Licensing and Environment
Daniele Lomba holds a degree in Economics from the Federal University of Rio de Janeiro (UFRJ) and a master’s degree in Energy, Environment, and Regulation from the Engineering School of the University of Salvador. She worked at the National Agency of Petroleum (ANP) from 1999 to 2001. In 2001, she joined Petrobras as Coordinator for Regulatory Affairs, Project Coordinator, and General Manager of Environmental Licensing. Currently, she is the General Manager of Licensing and Environment, an area responsible for the licensing and environmental management of Petrobras’s assets.

SpeakerEduardo Ribeiro Nicolosi
Petrobras – Subsea Equipment Engineer
Eduardo Nicolosi is a mechanical engineer with a master’s degree in manufacturing engineering. Since 2007, he has been working in PETROBRAS’s subsea engineering sector, where he has been involved in over a dozen projects related to the decommissioning of subsea pipelines, umbilicals, and manifolds. Nicolosi is in charge of the training and knowledge management program for offshore decommissioning projects at Petrobras.

SpeakerPing Teo
IOGP Decommissioning Manager
Ping Teo is the Decommissioning Manager at IOGP since 2021, where she manages the activities of its global Decommissioning forum, driving international collaboration and sharing of best practices. In this role, she also engages represents IOGP at various regulatory forum. With over 15 years of industry experience at Shell prior to IOGP, Ping had held leading roles in Offshore Greenfield, Brownfield and Decommissioning Projects. She was the project lead for Shell Brunei’s offshore portfolio where she led teams through studies phases, regulatory engagements, contract development and early phase decommissioning execution.

SpeakerLaurelena Palhano
Coppe/UFRJ – Executive Coordinator of the Research Group on Sustainable Decommissioning
Ph.D. and M.Sc. in Production Engineering from COPPE/UFRJ, focused on Sustainability in Organizations. Holds a postgraduate degree in Social Responsibility and Third Sector. Extensive experience in stakeholder engagement and strategic management across NGOs, government, and private sectors. Currently, she is the Executive Coordinator of the Research Group on Sustainable Decommissioning at SAGE and LTS Laboratories, COPPE/UFRJ, and a postdoctoral researcher in Production Engineering, specializing in sustainable decommissioning of offshore oil and gas facilities since January 2018.

SpeakerLucia Helena Laureano Bernardi
Petrobras – Decommissioning Licensing Manager
Lucia Laureano is an architect with a specialization in Occupational Safety Engineering and Environmental Management, as well as a specialization in Project Management. With solid experience in the oil and gas sector, she worked in Environmental Licensing at Petrobras, specifically supporting offshore PRESALT projects. For the past six years, she has been working as manager responsible for environmental licensing in the decommissioning stages of oil and gas exploration and production activities. Her expertise and commitment make her a recognized professional in the field of environmental licensing and sustainability.

SpeakerMaria Carolina Costa de França
CAR Law Associated
Carolina is a dual qualified Brazilian lawyer and barrister-at-law in England and Wales with a broad international experience. As a maritime law practitioner, she advises clients in Common Law – Civil legal systems conflict, notably the English legal system. Carolina França specialises in various consultative matters by dealing with marine and cargo claims, oil pollution, P&I, ports & terminals, regulatory matters, ship recycling, decommissioning and decarbonisation. She has also been widely involved in emergency response to complex accidents. Carolina is regularly invited to speak in national and international conferences on relevant topics pertaining relevant topics in the shipping and energy sectors.

ChairKevin Kim
Shell Brasil – D&R Manager
Kevin is a Petroleum engineer from the IPN in Mexico, he also holds a Master in oil and gas law University of Oklahoma and EMBA from Rice Univ, he has more than 22 years of experience working in DW operations and projects ranging from frontier exploration to major greenfield developments located in West Africa, Brasil, Gulf of Mexico, Colombia, Suriname, French Guiana and Mexico. He is currently the D&R Manager in Shell Brazil, he is married with 2 children and on his free time he enjoy training for and compiting in triathlons.

ChairGustavo Calazans
Petrobras – Subsea General Manager
Mr. Gustavo Calazans de Cerqueira is currently the Subsea Engineering General Manager at Petrobras. He leads the team responsible for Engineering activities and documentation throughout the entire Subsea Production System life cycle, since the conceptual phase until decommissioning for all E&P projects and Renewable Energy Projects.He joined Petrobras in 2007 and since then he worked at Subsea Equipment Engineering area and later held several leadership positions at the Subsea area, in the areas of Project Implementation, Planning, Operation and Engineering.Mr. Calazans is a Mechanical Engineer graduated from the Federal University of Rio de Janeiro (UFRJ). He also has a Master’s degree in Oceanic Engineering from UFRJ and an Executive MBA in Management with an emphasis on Project Management from Fundação Getulio Vargas (FGV).

SpeakerDiogo Diederichs Prado
Petrobras – Decommissioning Projects Engineer
Diogo is an Industrial Engineer with over 10 years of experience in the O&G industry, complemented by a strong foundation in project management, an MSc in Energy Planning and a recently conferred MSc in Decommissioning by the University of Aberdeen.Having joined Petrobras in 2013, he has contributed to several high-profile projects, including the award-winning “Revitalization of the Marlim Field” (OTC 2024). Diogo now provides strategic support to the company’s projects, being enthusiastic about implementing innovative methods and technologies to enhance the efficiency and safety of decommissioning.

SpeakerFrancis Norman
CEO and Managing Director of CODA, the Centre of Decommissioning Australia
Dr. Francis Norman is CEO and Managing Director of CODA, the Centre of Decommissioning Australia. He has held this role since CODA was established in 2020. CODA is the Australian peak body for decommissioning, bringing together the entire industry to deliver the best possible outcomes from all decommissioning activity.

SpeakerMarcelo Igor Lourenço
COPPE/UFRJ Professors
Marcelo holds a Mechanical Engineering degree and a Ph.D. in subsea technology (COPPE/UFRJ). Since 2004, he has collaborated with OG operators on offshore structures and subsea equipment integrity research and, recently, has developed Decision-making methodologies for decommissioning. He is Professor at UFRJ, Head of the Naval & Ocean Engineering Department, and a member of ABCM’s Offshore & Petroleum Engineering Committee.

SpeakerJean David Caprace
COPPE/UFRJ Professors
Jean-David Caprace has been a professor at COPPE/UFRJ since 2013 and holds a PhD in Applied Sciences (2010) from the University of Liège. He is the Director of Academic Affairs at COPPE and part of the Graduate Program in Ocean Engineering (PEnO). His research focuses on naval and ocean engineering, developing disruptive solutions for offshore, port, and international shipping logistics.

SpeakerJed Van Iersel
Liberty Industrial Decommissioning Manager
Jed Van Iersel serves as a highly skilled Decommissioning Manager at Liberty Industrial, with extensive experience in managing complex offshore and onshore decommissioning projects. Jed specializes in delivering innovative solutions that prioritize safety, environmental, stewardship, and cost efficiency. With strong technical background and a proven track record in project delivery, Jed is dedicated to supporting clients in achieving sustainable outcomes as the industry transitions toward greener and more responsible practices. His expertise includes asset dismantling, waste management, and regulatory compliance, making him a trusted leader in the decommissioning sector. Jed is passionate about driving collaboration within the industry and fostering innovation to meet the challenges of the evolving energy landscape.

SpeakerGuilherme Fernandes Ventura
Petrobras – Subsea Equipment Engineer
Guilherme Ventura is a mechanical engineer graduated at the Federal Technological University – Paraná (UTFPR) in 2021. He joined Petrobras in 2022 from the automotive industry. Currently working on executive engineering projects for the decommissioning of submarine systems in the Santos and Campos basins, focusing on basic design for pull out and retrieval of flexible pipelines.

ChairEdson Valverde
Petrobras – Strategic Support Manager for Decommissioning
Edson Valverde holds both a bachelor’s and a master’s degree in Mechanical Engineering from São Paulo State University (Unesp). He began his career at Petrobras in 2011, focusing on topside facilities engineering. In 2016, he transitioned to the decommissioning department, dedicating his expertise to offshore production platforms. Over the years, he has held several management positions in this field. Currently, Edson serves as the Strategic Support Manager for Decommissioning, a role he has embraced since last year. He is passionate about integrating sustainability into decommissioning projects and driving positive change in this area. Edson is married to Suzane and proud father to Mariana, a delightful and charismatic 5-year-old girl.

SpeakerPing Teo
IOGP Decommissioning Manager
Ping Teo is the Decommissioning Manager at IOGP since 2021, where she manages the activities of its global Decommissioning forum, driving international collaboration and sharing of best practices. In this role, she also engages represents IOGP at various regulatory forum. With over 15 years of industry experience at Shell prior to IOGP, Ping had held leading roles in Offshore Greenfield, Brownfield and Decommissioning Projects. She was the project lead for Shell Brunei’s offshore portfolio where she led teams through studies phases, regulatory engagements, contract development and early phase decommissioning execution.

SpeakerFlavio Torres
IBP – E&P Operations & Maintenance Manager
Electronic and petroleum engineer with extensive experience in the Brazilian energy sector. In addition to working for companies such as SLB, Petrobras, PPSA and ES Gás, he was Secretary of Development for the State of Espírito Santo and Secretary of Oil, Gas and Biofuels, Executive Secretary and interim Minister of Mines and Energy. He currently heads the oil company EnP Energy and chairs the Brazilian Association of Independent Oil and Gas Producers, ABPIP.

SpeakerFrancis Norman
CEO and Managing Director of CODA, the Centre of Decommissioning Australia
Dr. Francis Norman is CEO and Managing Director of CODA, the Centre of Decommissioning Australia. He has held this role since CODA was established in 2020. CODA is the Australian peak body for decommissioning, bringing together the entire industry to deliver the best possible outcomes from all decommissioning activity.