Hydrocarbon detection in the gas phase can be a powerful tool to guide downstream operations for the oil & gas industry. This application requires highly sensitive, selective and robust spectroscopic techniques. In this work, a quartz-enhanced photoacoustic sensor system designed to detect methane and ethane concentration levels in the part-per billion concentration range by employing a single interband cascade laser emitting at 3345 nm is reported. Measurements at both low and high pressure were carried out and mixtures simulating typical downhole compositions were analyzed.
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Angelo Sampaolo, Sebastian Csutak, Pietro Patimisco, Marilena Giglio, Giansergio Menduni, Vittorio Passaro, Frank K. Tittel, Max Deffenbaugh, Vincenzo Spagnolo, "Interband cascade laser based quartz-enhanced photoacoustic sensor for multiple hydrocarbons detection," Proc. SPIE 10540, Quantum Sensing and Nano Electronics and Photonics XV, 105400C (26 January 2018); https://doi.org/10.1117/12.2288336