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Title: Methods and apparatus for measuring small leaks from carbon dioxide sequestration facilities

In one embodiment, a CO.sub.2 leak detection instrument detects leaks from a site (e.g., a CO.sub.2 sequestration facility) using rapid concentration measurements of CO.sub.2, O.sub.2 and optionally water concentration that are achieved, for example, using laser spectroscopy (e.g. direct absorption laser spectroscopy). Water vapor in the sample gas may not be removed, or only partially removed. The sample gas may be collected using a multiplexed inlet assembly from a plurality of locations. CO.sub.2 and O.sub.2 concentrations may be corrected based on the water concentration. A resulting dataset of the CO.sub.2 and O.sub.2 concentrations is analyzed over time intervals to detect any changes in CO.sub.2 concentration that are not anti-correlated with O.sub.2 concentration, and to identify a potential CO.sub.2 leak in response thereto. The analysis may include determining eddy covariance flux measurements of sub-surface potential carbon.
Inventors:
;
Issue Date:
OSTI Identifier:
1415454
Assignee:
Aerodyne Research, Inc. (Billerica, MA) CHO
Patent Number(s):
9,857,267
Application Number:
15/350,925
Contract Number:
SC0013132
Resource Relation:
Patent File Date: 2016 Nov 14
Research Org:
Aerodyne Research, Inc., Billerica, MA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 54 ENVIRONMENTAL SCIENCES

Other works cited in this record:

Method of detecting leakage from geologic formations used to sequester CO2
patent, April 2010

Measurement of Carbon Capture Efficiency and Stored Carbon Leakage
patent-application, September 2010

An eddy covariance theory of using O2 to CO2 exchange ratio to constrain measurements of net ecosystem exchange of any gas species
journal, July 2013

The fundamental equation of eddy covariance and its application in flux measurements
journal, January 2012

Detection of CO2 leaks from carbon capture and storage sites with combined atmospheric CO2 and O2 measurements
journal, October 2015
  • van Leeuwen, Charlotte; Meijer, Harro A. J.
  • International Journal of Greenhouse Gas Control, Vol. 41, p. 194-209
  • DOI: 10.1016/j.ijggc.2015.07.019

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