Environment Report 2018
slight increase in 2017 to 22,700 tonnes per million barrels of oil equivalent (boe) produced. Improved production efficiency from existing assets has driven this trend, rising from a low of 60 per cent in 2012 to 74 per cent in 2017.
Since its peak in 2013 CO 2 per unit of production (carbon intensity) on the UK continental Shelf (UKCS) saw a
emissions
2
This is a 6 per cent increase on 2016 . Over 1.3 million tonnes of gas were flared on the UKCS in 2017, often for safety reasons.
40% Gas venting saw a
increase in 2017, to 61,976 tonnes of gas.
Nearly a third of that total was due to a single installation which has been unable to flare due to incombustible gas emissions, where the CO2 content was too high to permit ignition. Nearly one-third of tha tot l was due to a single installation which has been unabl to flare due to incombustible gas emissions, where he CO 2 content was too h gh to enable ignition.
ACCIDENTAL RELEASES AND DISCHARGES
In 2017 there were 451 accidental releases of oil and chemicals , with a total mass of almost 279 tonnes reaching the marine environment. This is an improvement on 2016.
253
Of these, were accidental releases, totalling just over 23 tonnes of oil . The average mass of oil released per occurrence was less than 0.1 tonnes in 2017 , compared with an average of 0.57 tonnes per occurrence from 2010-17 . This represents less than 0.00003%
of total production.
the average mass of chemicals per release was 2.08 tonnes per release for the period since 2010.
1.3 tonnes ,
In 2017,
compared to an average of
Almost 256 tonnes of chemicals were accidentally released
in 198 incidents
7
the majority (215 tonnes, 96 per cent)
were low hazard or PLONOR.
in 2017. Of these,
of the total mass of chemicals used, and 0.1% 0.27%
Accidental chemical releases represented less than
of the chemicals intentionally discharged under permit.
7
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