Detection of Corrosive Gases in live pipeline products

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Date: 16:00:00 - Jun 21 2018

Speakers: Chris Goss, Lee Marotta

Moderators: Tom Lynch

Sediment material from corrosion (containing magnetic iron, oxide based) has been found accumulating in pumps, valves, on pigs and in line inspection tools. In more viscous streams, the solids may be suspended in the stream and not result in the same operational issues, however they may cause issues in tankage with settling. Condensates are low viscosity and have limited ability for solids retention so the issue may appear more readily in these lines.
Some of the key contributors to corrosion are oxygen (O2), carbon dioxide (CO2) and hydrogen sulfide (H2S) gases. These can cause corrosion when present in the low ppm to ppb range. At this time, a robust, reliable method to detect trace levels of dissolved corrosion gases (O2, H2S and CO2) in pipeline products does not exist. Headspace gas chromatography (GC) and gas oil ratio (GOR) techniques have previously been considered and/or evaluated, however they will not work for the trace amounts of dissolved gas that are to be detected.
A method was developed that uses a liquid phase injection, a backflush so the fixed gas column does not get contaminated, and a sensitive detector. High part per billion (ppb) detection limits were achieved.

Learning Objectives

Learn an effective approach for the analysis of “live” fluids.
How backflushing and column switching are easy using an inert, micro fluidic device (swafer)
How to attain low level detection of corrosive gases

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Speakers

Chris Goss (Innotech Alberta)

Chris has worked in gas chromatography for 20+ years after graduating from the University of Alberta. The last 17 years doing research, method development, and standard methods for the petroleum testing industry.

Lee Marotta (Perkin Elmer)

Lee Marotta started her career at Exxon Corporate Research as a gas chromatographer in 1988. Since Exxon, Lee has been employed at PerkinElmer for over 25 years as a Field Application Scientist developing methods for gas chromatography and assisting customers realize solutions and be successful.

Moderators

Tom Lynch (International Labmate Ltd)

Tom has 35 years’ of experience in the petroleum industry, specialising in the delivery of forensic and problem solving /method development capabilities for BP Fuels and Lubricants businesses globally. He was also a member of the BP Science Council representing Analytical Science and led a BP wide Analytical Science network. Tom has published over 30 citable papers, 4 book chapters and has given over 60 presentations at conferences. He is a past Vice President of the Royal Society of Chemistry (RSC) Analytical Division and a past Chairman of the RSC Separation Science Group. In addition, Tom is a recipient of the Silver Jubilee Medal by the Chromatographic Society and a technical achievement award by the Energy Institute.