Environmental Statement - Maersk Oil

5‐ 12
Balloch Field Development Environmental Statement
Section 5 Assessment of Potential Impacts and Controls
Table 5‐10 Balloch development production emissions as a percentage of total UK offshore installation
emissions.
Emissions (te) 1
CO 2 NO x N 2O SO 2 CO CH 4 VOC
2009 UK total emissions
from offshore installations
Balloch emissions
15,354,696 44,096 972 1,875 22,717 51,352 56,918
associated with power
generation
45,758 395 3.37 22.12 116 9.77 11.55
Balloch emissions as % of
UK 2009 total
0.17 % 0.89 % 0.35 % 1.18 % 0.51 % 0.02 % 0.02 %
1
Atmospheric emissions have been calculated using emissions factors from EEMS Atmospheric Calculations Issue 1.810a (EEMS,
2008).
Emissions from venting and flaring
In 2011, venting associated with the offloading of 1.155 million m 3 of oil resulted in the production of
16 te of CH4 and 1,933 te of VOCs. Maximum Balloch production occurs in 2014 with an anticipated
P10 of 1.026 million te (1.244 million m 3 ). It is possible to predict the CH4 and VOC emissions using
factors provided in EEMS (2008). Predicted CH4 and VOC emissions associated with the offloading of
the Balloch oil in 2014 are 21 te and 2,488 te respectively decreasing to 9.5 te and 1,127 te
respectively in 2016.
It is not anticipated that flaring will increase as a result of the proposed Balloch development and
therefore current flaring emissions on the GPIII are expected to be representative of those when the
Balloch development commences production. Total gas flared on the GPIII in 2011 was 22,941 te. The
atmospheric emissions associated with this flaring load are presented in Table 5‐11.
Table 5‐11 Flaring emissions associated with the GPIII.
Total gas flared
on the GPIII (te)
Emissions (te) 1
CO 2 NO x N 2O SO 2 CO CH 4 VOC
Emissions associated
with 2011 flaring on the
GPIII
22,941 64,236 27.53 1.86 0.29 154 229 229
1
Atmospheric emissions have been calculated using emissions factors from EEMS Atmospheric Calculations
Issue 1.810a (EEMS, 2008).
Proposed control measures for impacts associated with emissions to air during the production
phase
The following control measures are proposed to minimise the impact associated with atmospheric
emissions during production.