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Dr. Paromita Deb

Sixteen years de-risking subsurface energy — from oil & gas exploration to geothermal reserves assessment, natural hydrogen, and carbon storage. My work brings reserves-grade rigor and physics-based risk modelling to the geothermal sector.

Alongside my research, I mentor students and early-career geoscientists navigating similar paths — international PhDs, industry-to-academia moves, and the shift from oil & gas into the energy transition.

Portrait of Dr. Paromita Deb
PostgradIIT Bombay
PhDRWTH Aachen
ResearchETH Zürich · TU Delft
IndustrySLB · Wintershall Dea · Ad Terra
Get in touch Email · LinkedIn
01

My Story

I grew up in Shillong, a small hilly town in Northeast India. In 2005, when I first started studying geology, one lecture on plate tectonics sparked a lifelong fascination. I had no idea where it would lead, but it felt like the right path.

I topped my university and chose to pursue Geophysics, combining my two favorite subjects: geology and physics. After clearing one of the toughest entrance exams in the country, I made my way to IIT Bombay for a postgraduate degree in Applied Geophysics, as the only woman in my class. My career took shape when I joined the subsurface exploration team at SLB in Mumbai, India, working on oil and gas projects across India, the Middle East, and Australia.

The next leap took more courage: leaving a secure job and a comfortable life in Mumbai to join an oil and gas operator in Germany. Everything was new and challenging: the language, the food, and the culture, but I've always been drawn to a challenge, and I found my footing the way I usually do — by learning the language first. It turned out to be the shortcut to people's hearts.

From there, I pivoted into geothermal energy research, leading international projects across Germany, Mexico, the Netherlands, Italy, and Switzerland. During this time, I also decided to fulfill my long-held wish of obtaining a Doctoral degree - a big decision past 30, in addition to a full-time job. It was an intense journey, and I am proud to say I graduated with Summa Cum Laude, the highest distinction in late 2021.

Today, at Ad Terra in Geneva, I am back in industry, leading the company's R&D portfolio and innovation strategy – all with the aim of making low-carbon energy sources like geothermal and natural hydrogen more commercially viable. Alongside this, I collaborate internationally with universities and research institutions, and mentor and supervise students, supporting them in reaching their research goals.

Dr. Paromita Deb conducting field geology work at an outcrop, wearing a hard hat and field notebook in hand
Early days with SLB — geological field work in Arkansas, USA.
Where Work Has Taken Me

Assignments and collaborations across five continents.

Hover over each country to see why I was there.

World map highlighting countries where Dr. Deb has led or collaborated on projects
16+
Years of Experience
16+
Countries
25+
Publications
5+
International Languages
01

Professional Journey

Scroll for earlier roles →
2025 – Present
R&D Manager & Senior Geoscientist, Ad Terra / Swiss Geo Energy
Geneva, Switzerland
Leading GO-Forward and the broader R&D portfolio across geothermal, natural hydrogen and carbon storage.
2022
Senior Research Scientist & Project Manager, ETH Zürich
Zürich, Switzerland
Scientific lead for DEPLOI the HEAT-CH (Novel Geothermal Drilling Technology project); project manager for the EU-funded EASYGO consortium (Innovative Training Network for Doctoral students).
2016
Project Coordinator & Research Scientist, RWTH Aachen
Aachen, Germany
Scientific lead for GEMEX on Reservoir Characterization, the EU–Mexico geothermal collaboration on super-hot and enhanced geothermal systems; began doctoral research alongside the role.
2014
Senior Geoscientist, Wintershall Dea
Hamburg, Germany
Field-scale reservoir case studies across Germany and Egypt; real-time operational support while drilling and logging.
2010
Geophysicist, SLB
Mumbai, India
Geophysical evaluation of 200+ wells across oil, gas and coal seam gas fields in India, the Middle East and Australia.
02

Areas of Expertise

My work focuses on quantifying subsurface potential, performance, and uncertainty by integrating geophysics, reservoir physics, numerical modelling, experimental data and field observations. Developed across oil & gas and geothermal systems, these capabilities now extend to natural hydrogen, helium, geological CO2 storage and emerging subsurface technologies.

Scientific Leadership & Project Management

Leadership of multi-million CHF/EUR international R&D programmes involving academia, industry, technology providers and public-sector stakeholders. Led multidisciplinary teams of 20+ researchers across multiple institutions and countries through major international programmes, while defining technical direction, critically reviewing project outputs and translating complex subsurface results into clear project and investment decisions.

Selected publicly accessible projects

Geothermal Resource & Reserves Assessment

Resource and reserve evaluation across the full assessment chain — from estimating recoverable geothermal potential and modelling well and reservoir performance to development scenarios and techno-economics. Experience in conducting screening and technical due-diligence studies assessing subsurface assumptions, key uncertainties, development assumptions and associated technical risks.

Selected publicly accessible projects
2026
Field demonstration and integrated productivity-economics assessment of multi-lateral geothermal wells enabled by directional steel shot drilling
Geothermics, 142, 103780
DOI →
2025
De-Risking Investment in High Enthalpy Geothermal Assets in Exploration and Pre-Development Stages: A Due Diligence Perspective
Deb et al., IIGCE 2025, Jakarta
DOI →
2023
Analytical Solutions to Evaluate the Geothermal Energy Generation Potential from Sedimentary-Basin Reservoirs
Geothermics, 116, 102843
DOI →
2021
An approach to reconstruct the thermal history in active magmatic systems: implications for the Los Humeros volcanic complex, Mexico
Geothermics, 96, 102162
DOI →

Reservoir Characterisation & Modelling

Integrated characterisation of rocks and fracture systems using well logs, geophysical interpretation, laboratory measurements and geomechanical analysis. Numerical and analytical modelling of heat transfer, fluid flow and reservoir behaviour across geothermal and other subsurface systems, combining deterministic, stochastic and process-based forward modelling to quantify uncertainty and improve predictive capability.

Selected publicly accessible projects
2026
Advancing Geothermal Reservoir Characterization through Process-Based Fracture Forward Modelling: A Case Study from the Cretaceous Formation in the Eclépens Region of the Swiss Molasse Basin
Proceedings, World Geothermal Congress 2026 — link to be added
2025
A Novel Approach to Modeling Fracture Corridors in Naturally Fractured Reservoirs
Proceedings, European Geothermal Congress 2025
DOI →
2021
Verification of coupled hydraulic fracturing simulators using laboratory-scale experiments
Rock Mechanics and Rock Engineering, 54, 2881–2902
DOI →
2020
Laboratory-scale hydraulic fracturing dataset for benchmarking of Enhanced Geothermal System simulation tools
Nature Scientific Data, 7, 220
DOI →
2020
Stochastic workflows for the evaluation of Enhanced Geothermal System (EGS) potential in geothermal greenfields with sparse data: the case study of Acoculco, Mexico
Geothermics, 88, 101879
DOI →

Integrated Subsurface Exploration & Emerging Energy Systems

Integration of geological, geophysical, geochemical and reservoir data to identify and de-risk emerging energy systems — superhot/supercritical and Enhanced Geothermal Systems, Carbon Plume Geothermal, natural hydrogen and helium. I currently lead Switzerland’s first natural hydrogen and helium exploration project, applying integrated subsurface screening to define and evaluate exploration targets.

Projects & collaborations
External Collaborations
2026
Well Placement Controls the CO2 Storage Benefit of CO2 Plume Geothermal Systems: Towards a Least-Cost-Path Screening Metric
link to be added
2026
The Jorat Project: Natural Hydrogen Exploration in Switzerland's Molasse Basin
Link to be added
2021
An approach to reconstruct the thermal history in active magmatic systems: implications for the Los Humeros volcanic complex, Mexico
Geothermics, 96, 102162
DOI →
2021
Verification of coupled hydraulic fracturing simulators using laboratory-scale experiments
Rock Mechanics and Rock Engineering, 54, 2881–2902
DOI →
2020
Stochastic workflows for the evaluation of Enhanced Geothermal System (EGS) potential in geothermal greenfields with sparse data: the case study of Acoculco, Mexico
Geothermics, 88, 101879
DOI →
03

What Colleagues Say?

“

Paromita was a Postdoctoral Researcher and later Oberassistantin (Senior Researcher) in my Geothermal Energy and Geofluids group at ETH Zurich, where she served as scientific lead of DEPLOI the HEAT-CH and Project Manager of the EU-funded EASYGO consortium — a €3M project recognized as one of the best-executed ITN projects in 2023 by the European Commission. She is an excellent, creative, and rigorously working scientist: highly reliable, self-sufficient, and equally effective working independently or leading a team. Her industry background enables her to operate in a highly professional manner and to present her results in a highly effective and succinct form, always tailored to the target audience and on time. I give her my highest recommendation.

Prof. Dr. Martin SaarETH Zurich, Switzerland
“

Dr. Deb has been an extraordinarily valuable part of my research team. She has always been very motivated and painstaking, quickly adapted to new challenges, and consistently obtained excellent results. She has always been a very conscientious and reliable person — open towards innovation and characterized by a distinct intellectual grasp and great flexibility.

Prof. Emeritus Dr. Christoph ClauserRWTH Aachen University, Germany
04

Selected Awards and Achievements

Photo coming soon

Award ceremony photos are being added here — check back soon.

01

Mentoring & Speaking

Mentoring Philosophy

Looking back, I made several decisions whose outcomes were far from certain — moving to Germany with a one-year contract and no knowledge of the language or culture, starting a PhD after the age of 30, moving between institutions in multiple countries, and switching between industry and academia more than once.

What I now know is that the path doesn't have to be linear to be right. What makes the difference is having someone who has walked similar ground and can offer an honest perspective on what challenges to expect, and how best to prepare for them.

Over the years, that's meant showing up in a few different ways:

  • 10+ years mentoring BSc, MSc, and PhD students at different career stages
  • Active mentor, IIT Bombay Alumni Student Mentorship Programme (ASMP)
  • Project Coordinator, EU EASYGO MSCA-ITN — worked with doctoral students from 10+ countries; the project was recognized by the European Commission as one of the best-executed ITN projects in 2023

If my experience can help make someone else's journey a little clearer, then sharing it is worthwhile.

Career & Research Navigation

For geoscience students and early-career professionals navigating doctoral decisions, international careers, and transitions between academia and industry.

  • International Geoscience CareersNavigating careers across countries and institutions, including European research culture, professional expectations, language barriers, relocation realities, and building an international profile.
  • Industry ↔ Academia TransitionsPractical guidance on moving between industry and research, translating experience across sectors, and assessing where a PhD adds value — and where it may not.
  • Doctoral & Research CareersDeciding whether a PhD is the right step, identifying suitable research directions, approaching applications, and understanding what academic research careers actually involve.

Available as individual mentoring sessions.

Enquire About Mentoring →

Communicating Science to Decision-Makers

For researchers and technical professionals who need to communicate complex work clearly to scientific, executive, investor, or funding audiences.

  • Narrative & StructureIdentify the central message, build a logical storyline, remove unnecessary detail, and make the audience understand why the work matters.
  • Technical ClarityTranslate complex methods, uncertainty, risk, and results into clear language without oversimplifying the science or losing technical credibility.
  • Slides & DeliveryImprove slide clarity, visual hierarchy, pacing, and delivery through targeted slide reviews, mock presentations, or full rehearsal sessions.

Available as individual review and rehearsal sessions.

Enquire About Presentation Feedback →

Speaker & Expert Briefings

For universities, professional societies, student groups, and energy organizations seeking technical but accessible sessions on geothermal energy and emerging subsurface resources.

  • Geothermal Resources, Risk & InvestmentFrom resource assessment and subsurface uncertainty to reserves, project risk, and the technical evidence needed to move a geothermal opportunity toward investment.
  • Emerging Subsurface ResourcesAn accessible introduction to natural hydrogen and helium exploration, including geological controls, exploration concepts, uncertainties, and their potential role in the energy transition.
  • Collaborative R&D in PracticeWhat makes multidisciplinary research projects work — from defining objectives and work packages to aligning academic and industry partners, managing interfaces, and delivering useful outcomes.

Available for invited talks and tailored expert briefings.

Request a Speaking Engagement →
02

From the Podium

Want to book a talk or a mentoring session? I'd love to hear from you.