A novel in-line fibre-optic sensor for the detection of hydrate inhibitors within the oil and gas industry

G.R. McDowell; M. Uttamlal; A.S. Holmes-Smith; A. Graham

doi:10.1109/ICSENS.2016.7808603

A novel in-line fibre-optic sensor for the detection of hydrate inhibitors within the oil and gas industry

G.R. McDowell, M. Uttamlal, A.S. Holmes-Smith, A. Graham

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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Abstract

An in-line fibre-optic fluorescence-based sensing methodology for the detection of two common thermodynamic hydrate inhibitors (THI), monoethylene glycol (MEG) and methanol (MeOH), used in the oil and gas industry has been developed. The fluorescence properties of two solvatochromic indicator probes were determined with varying ratios of THIs within oil-in-water mixtures. Sensor performance was evaluated for varying oil type, oil concentration and solution salinity to mimic the chemical composition of an oil flow line. Finally, an inline sensing capability was demonstrated using a purpose built industrial flow loop system with the results obtained showing that the concentration of known THIs can be determined to within 5% in the 0-50% THI concentration range. This measurement method has opened up the possibility of controlling hydrate inhibitor concentration in real-time, leading to improved flow assurance and substantial economic benefits.

Original language	English
Title of host publication	IEEE SENSORS, 2016
Publisher	IEEE
ISBN (Electronic)	9781479982875
DOIs	https://doi.org/10.1109/ICSENS.2016.7808603
Publication status	Published - 9 Jan 2017
Event	IEEE Sensors 2016 - Orlando, Orlando, United States Duration: 30 Oct 2016 → 3 Nov 2016 http://ieee-sensors2016.org/

Conference

Conference	IEEE Sensors 2016
Country	United States
City	Orlando
Period	30/10/16 → 3/11/16
Internet address	http://ieee-sensors2016.org/

Keywords

chemical sensor
oils
pipelines
temperature measurement
monitoring

Documents and Links

10.1109/ICSENS.2016.7808603

McDowell, G.R. et al (2017) IEEE SENSORS 2016 proceedings paper
c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
Accepted author manuscript, 493 KB

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Department of Applied Science - Head of Department

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Cite this

McDowell, G. R., Uttamlal, M., Holmes-Smith, A. S., & Graham, A. (2017). A novel in-line fibre-optic sensor for the detection of hydrate inhibitors within the oil and gas industry. In IEEE SENSORS, 2016 IEEE. https://doi.org/10.1109/ICSENS.2016.7808603

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abstract = "An in-line fibre-optic fluorescence-based sensing methodology for the detection of two common thermodynamic hydrate inhibitors (THI), monoethylene glycol (MEG) and methanol (MeOH), used in the oil and gas industry has been developed. The fluorescence properties of two solvatochromic indicator probes were determined with varying ratios of THIs within oil-in-water mixtures. Sensor performance was evaluated for varying oil type, oil concentration and solution salinity to mimic the chemical composition of an oil flow line. Finally, an inline sensing capability was demonstrated using a purpose built industrial flow loop system with the results obtained showing that the concentration of known THIs can be determined to within 5% in the 0-50% THI concentration range. This measurement method has opened up the possibility of controlling hydrate inhibitor concentration in real-time, leading to improved flow assurance and substantial economic benefits.",

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AB - An in-line fibre-optic fluorescence-based sensing methodology for the detection of two common thermodynamic hydrate inhibitors (THI), monoethylene glycol (MEG) and methanol (MeOH), used in the oil and gas industry has been developed. The fluorescence properties of two solvatochromic indicator probes were determined with varying ratios of THIs within oil-in-water mixtures. Sensor performance was evaluated for varying oil type, oil concentration and solution salinity to mimic the chemical composition of an oil flow line. Finally, an inline sensing capability was demonstrated using a purpose built industrial flow loop system with the results obtained showing that the concentration of known THIs can be determined to within 5% in the 0-50% THI concentration range. This measurement method has opened up the possibility of controlling hydrate inhibitor concentration in real-time, leading to improved flow assurance and substantial economic benefits.

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KW - temperature measurement

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