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Vol. 214, Issue 7, July 2017, pp. 21-27




LIBS Sensor for Sub-surface CO2 Leak Detection in Carbon Sequestration

1 Jinesh JAIN, 2 Dustin L. MCINTYRE, 2 Christian L. GOUEGUEL and 2 Chet R. BHATT

1 National Energy Technology Laboratory, AECOM Technology Corporation, Pittsburgh, 15236, USA
2 National Energy Technology Laboratory, U.S. Department of Energy, Pittsburgh, 15236, USA
1 Tel.: 412-386-7470, fax: 412-386-4542

E-mail: Jinesh.Jain@netl.doe.gov


Received: 1 June 2017 /Accepted: 12 July 2017 /Published: 31 July 2017

Digital Sensors and Sensor Sysstems


Abstract: Monitoring carbon sequestration poses numerous challenges to the sensor community. For example, the subsurface environment is notoriously harsh, with large potential mechanical, thermal, and chemical stresses, making long-term stability and survival a challenge to any potential in situ monitoring method. Laser induced breakdown spectroscopy (LIBS) has been demonstrated as a promising technology for chemical monitoring of harsh environments and hard to reach places. LIBS has a real- time monitoring capability and can be used for the elemental and isotopic analysis of solid, liquid, and gas samples. The flexibility of the probe design and the use of fiber- optics has made LIBS particularly suited for remote measurements. The paper focuses on developing a LIBS instrument for downhole high-pressure, high-temperature brine experiments, where CO2 leakage could result in changes in the trace mineral composition of an aquifer. The progress in fabricating a compact, robust, and simple LIBS sensor for widespread subsurface leak detection is presented.


Keywords: LIBS, C-Sequestration, Atomic spectroscopy, LIBS sensor, LIBS in drilling environments.


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