Synchrotron X-ray Studies of Supercritical Carbon Dioxide/ Reservoir Rock Interfaces Geothermal Lab Call Project

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Last modified on July 22, 2011.

Project Title Synchrotron X-ray Studies of Supercritical Carbon Dioxide/ Reservoir Rock Interfaces
Project Type / Topic 1 Laboratory Call for Submission of Applications for Research, Development and Analysis of Geothermal Technologies
Project Type / Topic 2 Supercritical Carbon Dioxide / Reservoir Rock Chemical Interactions

Project Description Recent studies proposed a new concept: enhanced geothermal systems (EGS) pumping supercritical carbon dioxide (scCO2) through fractured hot dry rock (HDR) reservoirs may have higher thermal efficiencies, better well-bore hydraulics, and reduced rock-fluid interactions compared to water pumping EGS. An added environmental benefit, the partial sequestration of the scCO2 pumped into HDR, may result from scCO2-pumping EGS. Nanoscale sensitivities are needed to measure minute changes occurring over typical laboratory time scales in order to predict long-term realistic chemical and structural behavior of rock surfaces exposed to binary fluids. Synchrotron hard X-rays offer a unique combination of penetrating power and nanoscale sensitivity.
State Illinois
Objectives Utilize synchrotron X-ray measurements, to monitor all aspects of atomic to nanoscale structural changes resulting from chemical interactions of scCO2-H2O binary fluids with rocks under environments directly relevant to EGS.
Awardees (Company / Institution) Argonne National Laboratory

Partner 1 Arizona State University

Funding Opportunity Announcement DE-PS36-09GO99017

DOE Funding Level (total award amount) $1,300,000.00

Total Project Cost $1,300,000.00

Principal Investigator(s) Hoydoo You

Targets / Milestones The project is divided into two phases:

- Phase I: Study the rock-scCO2 interface in the ASU cell, which currently does not allow in situ flow control of binary mixtures.
- Phase II: Measurements will be performed under variable-component binary fluids when the construction of the new flow cell is completed.

Location of Project Argonne, IL

Funding Source American Recovery and Reinvestment Act of 2009

References EERE Geothermal Technologies Programs[1]


  1. EERE Geothermal Technologies Programs