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Method of detecting leakage from geologic formations used to sequester CO.sub.2

United States Patent

April 27, 2010
View the Complete Patent at the US Patent & Trademark Office
National Energy Technology Laboratory - Visit the Technology Transfer Website
The invention provides methods for the measurement of carbon dioxide leakage from sequestration reservoirs. Tracer moieties are injected along with carbon dioxide into geological formations. Leakage is monitored by gas chromatographic analyses of absorbents. The invention also provides a process for the early leak detection of possible carbon dioxide leakage from sequestration reservoirs by measuring methane (CH.sub.4), ethane (C.sub.2H.sub.6), propane (C.sub.3H.sub.8), and/or radon (Rn) leakage rates from the reservoirs. The invention further provides a method for branding sequestered carbon dioxide using perfluorcarbon tracers (PFTs) to show ownership.
White; Curt (Pittsburgh, PA), Wells; Arthur (Bridgeville, PA), Diehl; J. Rodney (Pittsburgh, PA), Strazisar; Brian (Venetia, PA)
The United States of America as represented by the United States Department of Energy (Washington, DC), N/A (
12/ 351,348
January 9, 2009
CONTRACTUAL ORIGIN OF INVENTION The United States Government has rights in this invention pursuant to an employer-employee relationship between the U.S. Department of Energy and the inventors.