Speciation of VOC emissions related to offshore North Sea oil and gas productionCitation formats

  • External authors:
  • Shona E. Wilde
  • Pamela A. Dominutti
  • Stephen J. Andrews
  • Prudence Bateson
  • Stephane J.-B. Bauguitte
  • Ralph R. Burton
  • Ioana Colfescu
  • James France
  • Langwen Huang
  • Anna E. Jones
  • Tom Lachlan-Cope
  • James D. Lee
  • Alastair C. Lewis
  • Stephen D. Mobbs
  • Alexandra Weiss
  • Stuart Young
  • Ruth M. Purvis

Standard

Speciation of VOC emissions related to offshore North Sea oil and gas production. / Wilde, Shona E.; Dominutti, Pamela A.; Allen, Grant et al.

In: Atmospheric Chemistry and Physics, Vol. 21, No. 5, 12.03.2021, p. 3741-3762.

Research output: Contribution to journalArticlepeer-review

Harvard

Wilde, SE, Dominutti, PA, Allen, G, Andrews, SJ, Bateson, P, Bauguitte, SJ-B, Burton, RR, Colfescu, I, France, J, Hopkins, JR, Huang, L, Jones, AE, Lachlan-Cope, T, Lee, JD, Lewis, AC, Mobbs, SD, Weiss, A, Young, S & Purvis, RM 2021, 'Speciation of VOC emissions related to offshore North Sea oil and gas production', Atmospheric Chemistry and Physics, vol. 21, no. 5, pp. 3741-3762. https://doi.org/10.5194/acp-21-3741-2021

APA

Wilde, S. E., Dominutti, P. A., Allen, G., Andrews, S. J., Bateson, P., Bauguitte, S. J-B., Burton, R. R., Colfescu, I., France, J., Hopkins, J. R., Huang, L., Jones, A. E., Lachlan-Cope, T., Lee, J. D., Lewis, A. C., Mobbs, S. D., Weiss, A., Young, S., & Purvis, R. M. (2021). Speciation of VOC emissions related to offshore North Sea oil and gas production. Atmospheric Chemistry and Physics, 21(5), 3741-3762. https://doi.org/10.5194/acp-21-3741-2021

Vancouver

Wilde SE, Dominutti PA, Allen G, Andrews SJ, Bateson P, Bauguitte SJ-B et al. Speciation of VOC emissions related to offshore North Sea oil and gas production. Atmospheric Chemistry and Physics. 2021 Mar 12;21(5):3741-3762. https://doi.org/10.5194/acp-21-3741-2021

Author

Wilde, Shona E. ; Dominutti, Pamela A. ; Allen, Grant et al. / Speciation of VOC emissions related to offshore North Sea oil and gas production. In: Atmospheric Chemistry and Physics. 2021 ; Vol. 21, No. 5. pp. 3741-3762.

Bibtex

@article{1c97d9641dae4e229e161cbe5883c68f,
title = "Speciation of VOC emissions related to offshore North Sea oil and gas production",
abstract = "The North Sea is Europe s key oil and gas (O&G) basin with the output currently meeting 3 %-4% of global oil supply. Despite this, there are few observational constraints on the nature of atmospheric emissions from this region, with most information derived from bottom-up inventory estimates. This study reports on airborne measurements of volatile organic compounds (VOCs) emitted from O&G-producing regions in the North Sea. VOC source emission signatures for the primary extraction products from offshore fields (oil, gas, condensate, mixed) were determined in four geographic regions. Measured iso-pentane to n-pentane (iC5 = nC5) ratios were 0.89-1.24 for all regions, used as a confirmatory indicator of O&G activities. Light alkanes (ethane, propane, butane, pentane) were the dominant species emitted in all four regions; however, total OH reactivity was dominated by unsaturated species, such as 1,3-butadiene, despite their relatively low abundance. Benzene to toluene ratios indicated the influence of possible terrestrial combustion sources of emissions in the southern, gas-producing region of the North Sea, seen only during south or south-westerly wind episodes. However, all other regions showed a characteristic signature of O&G operations. Correlations between ethane (C2H6) and methane (CH4) confirmed O&G production to be the primary CH4 source. The enhancement ratio (1C2H6=1CH4) ranged between 0.03-0.18, indicating a spatial dependence on emissions with both wet and dry CH4 emission sources. The excess mole fraction demonstrated that deepwater oil extraction resulted in a greater proportion of emissions of higher carbon number alkanes relative to CH4, whereas gas extraction, typically from shallow waters, resulted in a less complex mix of emissions dominated by CH4. The VOC source profiles measured were similar to those in the UK National Atmospheric Emissions Inventory (NAEI) for oil production, with consistency between the molar ratios of light alkanes to propane. The largest discrepancies between observations and the inventory were for mono-Aromatic compounds, highlighting that these species are not currently fully captured in the inventory. These results demonstrate the applicability of VOC measurements to distinguish unique sources within the O&G sector and give an overview of VOC speciation over the North Sea.",
keywords = "Emissions, Climate Change",
author = "Wilde, {Shona E.} and Dominutti, {Pamela A.} and Grant Allen and Andrews, {Stephen J.} and Prudence Bateson and Bauguitte, {Stephane J.-B.} and Burton, {Ralph R.} and Ioana Colfescu and James France and Hopkins, {James R.} and Langwen Huang and Jones, {Anna E.} and Tom Lachlan-Cope and Lee, {James D.} and Lewis, {Alastair C.} and Mobbs, {Stephen D.} and Alexandra Weiss and Stuart Young and Purvis, {Ruth M.}",
note = "Funding Information: Acknowledgements. Airborne data were obtained using the BAe-146-301 Atmospheric Research Aircraft (ARA) flown by Airtask Ltd. and managed by FAAM Airborne Laboratory, jointly operated by UK Research and Innovation (UKRI) and the University of Leeds, and a DCH6 Twin Otter operated by the British Antarctic Survey (BAS). The FAAM aircraft data were collected as part of the Demonstration Of A Comprehensive Approach To Monitoring Emissions From Oil and Gas Installations (AEOG) project, the Improved understanding of accidental releases from oil and gas industries offshore project, and the Methane Observations and Yearly Assessments (MOYA) project, all funded by the Natural Environment Research Council (NERC). The Twin Otter aircraft campaigns were funded under the Climate and Clean Air Coalition (CCAC) Oil and Gas Methane Science Studies (MSS), hosted by the United Nations Environment Programme. Funding was provided by the Environmental Defense Fund, Oil and Gas Climate Initiative, European Commission, and CCAC. We also acknowledge the Offshore Petroleum Regulator for Environment and Decommissioning (OPRED) and Ricardo Energy & Environment for their involvement as project partners on the AEOG project. Funding Information: Financial support. This research has been supported by the Nat- Publisher Copyright: {\textcopyright} 2021 BMJ Publishing Group. All rights reserved.",
year = "2021",
month = mar,
day = "12",
doi = "10.5194/acp-21-3741-2021",
language = "English",
volume = "21",
pages = "3741--3762",
journal = "Atmospheric Chemistry and Physics",
issn = "1680-7316",
publisher = "Copernicus Gesellschaft mbH",
number = "5",

}

RIS

TY - JOUR

T1 - Speciation of VOC emissions related to offshore North Sea oil and gas production

AU - Wilde, Shona E.

AU - Dominutti, Pamela A.

AU - Allen, Grant

AU - Andrews, Stephen J.

AU - Bateson, Prudence

AU - Bauguitte, Stephane J.-B.

AU - Burton, Ralph R.

AU - Colfescu, Ioana

AU - France, James

AU - Hopkins, James R.

AU - Huang, Langwen

AU - Jones, Anna E.

AU - Lachlan-Cope, Tom

AU - Lee, James D.

AU - Lewis, Alastair C.

AU - Mobbs, Stephen D.

AU - Weiss, Alexandra

AU - Young, Stuart

AU - Purvis, Ruth M.

N1 - Funding Information: Acknowledgements. Airborne data were obtained using the BAe-146-301 Atmospheric Research Aircraft (ARA) flown by Airtask Ltd. and managed by FAAM Airborne Laboratory, jointly operated by UK Research and Innovation (UKRI) and the University of Leeds, and a DCH6 Twin Otter operated by the British Antarctic Survey (BAS). The FAAM aircraft data were collected as part of the Demonstration Of A Comprehensive Approach To Monitoring Emissions From Oil and Gas Installations (AEOG) project, the Improved understanding of accidental releases from oil and gas industries offshore project, and the Methane Observations and Yearly Assessments (MOYA) project, all funded by the Natural Environment Research Council (NERC). The Twin Otter aircraft campaigns were funded under the Climate and Clean Air Coalition (CCAC) Oil and Gas Methane Science Studies (MSS), hosted by the United Nations Environment Programme. Funding was provided by the Environmental Defense Fund, Oil and Gas Climate Initiative, European Commission, and CCAC. We also acknowledge the Offshore Petroleum Regulator for Environment and Decommissioning (OPRED) and Ricardo Energy & Environment for their involvement as project partners on the AEOG project. Funding Information: Financial support. This research has been supported by the Nat- Publisher Copyright: © 2021 BMJ Publishing Group. All rights reserved.

PY - 2021/3/12

Y1 - 2021/3/12

N2 - The North Sea is Europe s key oil and gas (O&G) basin with the output currently meeting 3 %-4% of global oil supply. Despite this, there are few observational constraints on the nature of atmospheric emissions from this region, with most information derived from bottom-up inventory estimates. This study reports on airborne measurements of volatile organic compounds (VOCs) emitted from O&G-producing regions in the North Sea. VOC source emission signatures for the primary extraction products from offshore fields (oil, gas, condensate, mixed) were determined in four geographic regions. Measured iso-pentane to n-pentane (iC5 = nC5) ratios were 0.89-1.24 for all regions, used as a confirmatory indicator of O&G activities. Light alkanes (ethane, propane, butane, pentane) were the dominant species emitted in all four regions; however, total OH reactivity was dominated by unsaturated species, such as 1,3-butadiene, despite their relatively low abundance. Benzene to toluene ratios indicated the influence of possible terrestrial combustion sources of emissions in the southern, gas-producing region of the North Sea, seen only during south or south-westerly wind episodes. However, all other regions showed a characteristic signature of O&G operations. Correlations between ethane (C2H6) and methane (CH4) confirmed O&G production to be the primary CH4 source. The enhancement ratio (1C2H6=1CH4) ranged between 0.03-0.18, indicating a spatial dependence on emissions with both wet and dry CH4 emission sources. The excess mole fraction demonstrated that deepwater oil extraction resulted in a greater proportion of emissions of higher carbon number alkanes relative to CH4, whereas gas extraction, typically from shallow waters, resulted in a less complex mix of emissions dominated by CH4. The VOC source profiles measured were similar to those in the UK National Atmospheric Emissions Inventory (NAEI) for oil production, with consistency between the molar ratios of light alkanes to propane. The largest discrepancies between observations and the inventory were for mono-Aromatic compounds, highlighting that these species are not currently fully captured in the inventory. These results demonstrate the applicability of VOC measurements to distinguish unique sources within the O&G sector and give an overview of VOC speciation over the North Sea.

AB - The North Sea is Europe s key oil and gas (O&G) basin with the output currently meeting 3 %-4% of global oil supply. Despite this, there are few observational constraints on the nature of atmospheric emissions from this region, with most information derived from bottom-up inventory estimates. This study reports on airborne measurements of volatile organic compounds (VOCs) emitted from O&G-producing regions in the North Sea. VOC source emission signatures for the primary extraction products from offshore fields (oil, gas, condensate, mixed) were determined in four geographic regions. Measured iso-pentane to n-pentane (iC5 = nC5) ratios were 0.89-1.24 for all regions, used as a confirmatory indicator of O&G activities. Light alkanes (ethane, propane, butane, pentane) were the dominant species emitted in all four regions; however, total OH reactivity was dominated by unsaturated species, such as 1,3-butadiene, despite their relatively low abundance. Benzene to toluene ratios indicated the influence of possible terrestrial combustion sources of emissions in the southern, gas-producing region of the North Sea, seen only during south or south-westerly wind episodes. However, all other regions showed a characteristic signature of O&G operations. Correlations between ethane (C2H6) and methane (CH4) confirmed O&G production to be the primary CH4 source. The enhancement ratio (1C2H6=1CH4) ranged between 0.03-0.18, indicating a spatial dependence on emissions with both wet and dry CH4 emission sources. The excess mole fraction demonstrated that deepwater oil extraction resulted in a greater proportion of emissions of higher carbon number alkanes relative to CH4, whereas gas extraction, typically from shallow waters, resulted in a less complex mix of emissions dominated by CH4. The VOC source profiles measured were similar to those in the UK National Atmospheric Emissions Inventory (NAEI) for oil production, with consistency between the molar ratios of light alkanes to propane. The largest discrepancies between observations and the inventory were for mono-Aromatic compounds, highlighting that these species are not currently fully captured in the inventory. These results demonstrate the applicability of VOC measurements to distinguish unique sources within the O&G sector and give an overview of VOC speciation over the North Sea.

KW - Emissions

KW - Climate Change

U2 - 10.5194/acp-21-3741-2021

DO - 10.5194/acp-21-3741-2021

M3 - Article

VL - 21

SP - 3741

EP - 3762

JO - Atmospheric Chemistry and Physics

JF - Atmospheric Chemistry and Physics

SN - 1680-7316

IS - 5

ER -