About Fervo Energy

Fervo Energy (NASDAQ: FRVO) is a modern power company developing next-generation geothermal resources to meet the growing demand for affordable, reliable, 24/7 carbon-free energy. Our mission is to transform geothermal into America’s most dependable and affordable source of clean, around-the-clock power. By combining innovations in horizontal drilling, fiber-optic sensing, and advanced reservoir engineering, Fervo has developed a repeatable approach to building utility-scale enhanced geothermal systems. Our flagship Cape Station development in Utah is planned to deliver 500 MW of firm, carbon-free power, and we are advancing a development pipeline of more than 50 GW. Join us and work alongside world-class engineers, geoscientists, operators, project builders, and business leaders working to make geothermal a cornerstone of a more reliable, affordable, and sustainable energy future.

Position Description

We are seeking a Senior Geochemical Modeler to develop and apply advanced geochemical and reactive transport models to support the design, development, and long-term operation of Enhanced Geothermal Systems (EGS). This scientist will predict fluid chemistry evolution during geothermal reservoir circulation, integrate laboratory and field data with numerical models, and assess geochemical risks associated with mineral scaling, corrosion, and non-condensable gas (NCG) generation and release.

The successful candidate will have expertise in reactive transport modeling, thermodynamic equilibrium, aqueous speciation, and kinetic modeling of high-temperature, high-pressure aqueous systems. Experience in geothermal energy, oil and gas, or other subsurface energy applications is strongly preferred. A demonstrated understanding of water–rock interaction and the ability to calibrate models against actual mineralogical data and produced-water chemistry are essential.

Responsibilities

Geochemical and Reactive Transport Modeling

Develop and execute reactive transport models to predict fluid chemistry evolution during reservoir circulation, injection, production, and thermal recovery.

Apply thermodynamic equilibrium, aqueous speciation, mineral dissolution and precipitation kinetics, and temperature-dependent reaction rates to evaluate water–rock interactions.

Use professional geochemical modeling tools, particularly TOUGHREACT and Geochemist’s Workbench (GWB), to evaluate mineral saturation, secondary mineral formation, and potential changes in reservoir porosity and permeability.

Evaluate the effects of temperature, pressure, fluid composition, and residence time on mineral reactions and fluid chemistry.

Water–Rock Interaction and Model Calibration

Interpret core, cuttings, XRD, XRF, petrographic, and other mineralogical analyses to characterize reservoir lithology and define representative mineral assemblages.

Incorporate actual rock composition, injection-fluid chemistry, and produced-water analyses into numerical models.

Calibrate model predictions against observed fluid chemistry, including major ions, alkalinity, silica, trace elements, and pH.

Refine reaction networks, kinetic parameters, reactive surface areas, and mineral assemblages to improve agreement between modeled and observed chemistry.

Perform sensitivity analyses and quantify uncertainty in key geochemical predictions.

Integration with Reservoir Simulation

Integrate geochemical models with three-dimensional reservoir simulation workflows used by Fervo, including ResFrac and other applicable numerical modeling platforms.

Incorporate reservoir flow, mass transport, temperature, pressure, residence time, and thermal evolution assumptions into reactive transport simulations.

Collaborate with reservoir engineers and geologists to evaluate coupled thermal, hydraulic, and geochemical processes and their implications for long-term reservoir performance.

Scaling, Corrosion, and Non-Condensable Gas Risk

Assess mineral scaling risks associated with carbonate, sulfate, silica, and silicate minerals during production, heat extraction, pressure changes, and reinjection.