Environment Report 2019

Figure 5: Breakdown of Gas Venting by Source

100,000

Emergency Operational Maintenance Gross

90,000

80,000

70,000

60,000

3

50,000

40,000

Total Gas Vented (Tonnes)

30,000

20,000

10,000

0

2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018

Source: EEMS May 2019

The UKCS total vented gas composition for 2018 is broken down in Figure 6, showing that 51 per cent of the gas is carbon dioxide, 25 per cent VOCs and 24 per cent methane. Routine venting during production is therefore identified as an area for review and where potential reductions in GHG emissions offshore could be made. Improvement will depend on the availability and engineering design opportunities on the installation.

Figure 6: UKCS Total Vent Gas Composition

VOC 24.79%

CO₂ Noₓ N₂O SO₂ CO CH₄ VOC

CO₂ 51.39%

CH₄ 23.82%

N₂O 0.00%

SO₂ 0.00%

CO 0.00%

Noₓ 0.00%

Source: EEMS May 2019

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