Health, Safety and Environment Report 2020
Environment
Discharges – Produced Water
Figure 16: Produced Water Discharged
Figure 17: Dispersed Oil Discharged with Produced Water
250 250
2,000 2,000
Dispersed Oil Discharged with Produced Water
Dispersed Oil in Water Concentration Limit
Produced Water Discharged Produced Water Discharged
3,500
35
Average Dispersed Oil Concentration with GC-FID Method
1,800 1,800
Produced Water Re-injected Produced Water Re-injected
200 200
1,600 1,600
3,000
30
Production Production
1,400 1,400
2,500
25
150 150
1,200 1,200
2,000
20
1,000 1,000
800 800
100 100
1,500
15
Production (Million boe) Production (Million boe)
Produced Water (Million m³) Produced Water (Million m³)
600 600
1,000
10
400 400
50
Dispersed Oil in Water Concentration (mg/l)
50
Dispersed Oil Discharged with Produced Water (Tonnes)
500
5
200 200
0
0
0
0
0
0
2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019
2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019
Source: EEMS, May 2020
Source: EEMS, May 2020; OGA Source: EEMS, May 2020; OGA
The volume of produced water discharged to sea increased in 2019,
The UKCS industry reinjected more produced water than in previous years, with 33 per cent of the total produced going back to the reservoir
The concentration and the mass of dispersed oil discharged with produced water in 2019 increased compared to 2018, continuing a trend apparent over the preceding three years. The total mass increased by 5 per cent, from 2,182 tonnes to 2,296 tonnes and the concentration increased to 16.9 from 16.1 mg/l, remaining below the 30 mg/l threshold set by OSPAR
33%
up 0.32 per cent year on year
HEALTH, SAFETY AND ENVIRONMENT REPORT 2020
24
Made with FlippingBook Publishing Software