Environmental Statement - Maersk Oil

Option 3 ‐ New Balloch template/flowline tied back to GPIII with new riser
2 ‐ 8
Balloch Field Development Environmental Statement
Section 2 Proposed Development
Option 3 requires the largest amount of subsea infrastructure to be installed. The Balloch wells would
be tied back to the GPII FPSO but, unlike options 1 and 2, a new manifold would be installed and tied
back to the FPSO via new 5.1 km production and gas lift lines and an umbilical (Figure 2‐7). This
option does not require a cooling skid, as the Balloch fluids are commingled with the Donan and
Lochranza fluids on board the FPSO. Two additional risers would need to be installed on the GPIII
FPSO for the production and gas lift.
Option 3 would require more subsea and FPSO infrastructure and was considered to have the biggest
environmental and economic impact, hence it was screened out from further consideration.
Conclusion of the Option Selection process
Figure 2‐7 Balloch development Option 3.
Option 1 will maximise production through existing facilities, with minimal requirement for new
infrastructure. The developmental footprint of Option 1 is the smallest and requires the least amount
of new infrastructure, thus it has minimal impacts associated with it. Option 1 is therefore considered
to be the best developmental option in terms of both environmental and economic considerations.