Waveguide-Based Ultrasonic and Far-Field Electromagnetic Sensors for Downhole Reservoir Characterization Geothermal Lab Call Project

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Last modified on July 22, 2011.

Project Title Waveguide-Based Ultrasonic and Far-Field Electromagnetic Sensors for Downhole Reservoir Characterization
Project Type / Topic 1 Laboratory Call for Submission of Applications for Research, Development and Analysis of Geothermal Technologies
Project Type / Topic 2 High-Temperature Downhole Tools
Project Description The proposed sensor designs will focus on their ruggedness and capability of tolerating the extreme reservoir environment, including high temperature (>300°C) and pressure (>20 MPa). The current downhole logging tools are mainly those developed for gas and oil exploration, but the high-temperature environment in a geothermal well has limited their application, which often requires heat shielding and lasts only a brief period. At present, EGS reservoir performance, as derived from reservoir geometry and permeability, contains significant uncertainties. In particular, the reservoir temperature gradients and flow rate of circulating fluid in an EGS reservoir are major unknowns. High-temperature logging tools for measuring temperature, pressure, flow, and other reservoir characteristics are needed in order to successfully develop and economically operate an EGS reservoir. This proposed project is intended to develop advanced sensors that can sustain the high-temperature and -pressure environment and provide the required logging measurements.
State Illinois
Objectives Develop waveguide-based ultrasonic (WBU) and far-field electromagnetic (FFEM) sensors to measure key enhanced geothermal systems (EGS) reservoir parameters, including directional temperature, pressure, fluid flow, and rock flow/rock interaction.
Awardees (Company / Institution) Argonne National Laboratory

Funding Opportunity Announcement DE-PS36-09GO99017
DOE Funding Level (total award amount) $550,000.00
Total Project Cost $550,000.00

Principal Investigator(s) A.C. Raptis

Targets / Milestones The proposed work is divided into three phases:

- Phase I: (1st year) The development of microwave (MW) radiometer and ultrasonic waveguide (UW) sensor will be conducted in parallel.
- Phase II: (2nd year) Conduct simulated laboratory tests to evaluate MW radiometer and UW sensor performance.
- Phase III: (3rd year) Build field prototypes and perform field tests.

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