Robust In Situ Strain Measurements to Monitor Carbon Dioxide (CO2) Storage Email Page
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Performer: Clemson University
Sensing head configurations of point sensors:<br/>a. Fiber embedded in the wall of casing measures radial strain.<br/>b1. Cylinder is sealed to form a stand-alone instrument.<br/>b2. Fiber embedded in a pendulum to create a tiltmeter;<br/>b3. Fiber embedded in a rod to measure directional radial strain.
Sensing head configurations of point sensors:
a. Fiber embedded in the wall of casing measures radial strain.
b1. Cylinder is sealed to form a stand-alone instrument.
b2. Fiber embedded in a pendulum to create a tiltmeter;
b3. Fiber embedded in a rod to measure directional radial strain.
Website: Clemson University
Award Number: FE0028292
Project Duration: 10/01/2016 – 03/31/2020
Total Award Value: $2,219,302
DOE Share: $1,775,443
Performer Share: $443,859
Technology Area: Geologic Storage
Key Technology: GS: Geomechanical Impacts
Location: Clemson, South Carolina

Project Description

Broadband, high-resolution strain is a new signal that has seen limited use in CO2 storage or geothermal exploration, largely because of limitations in instrumentation and data analyses. This project is demonstrating a method for improving the ability to track pressure and strain changes in order to identify possible CO2 release pathways. They will be evaluating multiple types of point and multi-component instruments using innovative optical fiber sensor fabrication techniques to measure multiple components of strain. Theoretical analyses using analytical and numerical solutions to fully coupled poroelastic models are also being integrated with an innovative hybrid inverse model to interpret strain measurement signals. The instrumentation and interpretation methods will be demonstrated at a CO2 storage analog site in Oklahoma.

Project Benefits

The project is improving the ability to track pressure and strain changes to identify possible CO2 release pathways. This research is developing methods for measuring and interpreting strain to improve the understanding of subsurface processes and the affects of CO2 injection on strain. The effort is contributing to the U.S. Department of Energy (DOE) Carbon Storage Program’s goal of ensuring CO2 storage permanence.

Contact Information

Federal Project Manager Stephen Henry: stephen.henry@netl.doe.gov
Technology Manager Traci Rodosta: traci.rodosta@netl.doe.gov
Principal Investigator Larry Murdoch: lmurdoc@clemson.edu

 

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