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



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.


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.


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


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.


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