Pore to Basin
Subsurface Characterization

About Diagenyx

Diagenyx works with technical and business teams who need rigorous, independent geoscience to make high-stakes subsurface decisions. Our clients span the full resource development lifecycle — from early exploration through producing asset management and transaction support.

Diagenyx is a geoscience consulting firm specializing in subsurface characterization for oil & gas, geothermal, CCUS, and critical minerals with licensed access to Petra® and Kingdom® subsurface interpretation software. Diagenyx has a nationwide USA well log, header, test, and production data package. If your project involves fractured reservoirs, reservoir quality prediction, petrography, geomechanics, or exploration derisking — and you need rigorous, data-driven analysis you can make decisions on — Diagenyx serves as a strategic partner.

Our mission is to deliver technical clarity grounded in science: translating legacy subsurface data into actionable insights that helps clients confidently evaluate resources, reduce risk, and optimize development.

We maintain a strong collaborative network of experienced independent consultants spanning reservoir engineering, geomechanics, geophysics, petrophysics, structural geology, reservoir quality, operations, and wellsite geology — enabling us to scale seamlessly with project scope and assemble the right expertise for each engagement.

Diagenyx is invested in the next generation of geoscientists. Actively mentoring and training recent graduate from Fort Lewis College and Colorado School of Mines, bringing sharp emerging talent into technical work alongside seasoned practitioners.

Based in Denver, Colorado, Diagenyx serves client interests throughout the Northern, Central, and Southern Americas.

Stephanie Forstner, PhD

Founder & Principle Geoscientist, Diagenyx

Stephanie is a classically trained scrappy geoscientist with a career spanning corporate energy industry and applied research since 2008. She specializes in natural fracture systems, reservoir quality, diagenesis, and geomechanics, integrating structural geology, and basin modeling to derisk exploration and improve development outcomes across conventional and unconventional O&G, geothermal, and mineral systems.

She holds a PhD in Geosciences from The University of Texas at Austin, where her research on fractured reservoirs, diagenesis, and geomechanics in EGS and tight gas sandstone outcrop analogs became among the more-cited work in the Journal of Structural Geology. Her BS in Geology is from Fort Lewis College.

Prior to founding Diagenyx, Stephanie worked as a Research Scientist Associate at the Bureau of Economic Geology's Fracture Research and Application Consortium (FRAC). Before that, her post-undergrad company served Ridge Resources, Kinder Morgan, and Logos Resources — brokering over $20 million in oil and gas transactions. She has also held technical roles with SM Energy and Barrick Gold.

Stephanie currently serves as RMAG Secretary, Colorado RIG Champion for Geothermal Rising, and is on the Planning Committee for the 2027 RMS-AAPG Annual Meeting.

A former competitive soccer player, Stephanie enjoys skiing, biking, pottery, cooking, and the outdoors. Most of her free time is spent with her husband, Evan, their son, Westley, and their dog, Max.