Environmental Statement - Maersk Oil

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2 ‐ 22 Balloch Field Development Environmental Statement Section 2 Proposed Development transfer pumps The stabilisation system is designed to achieve a crude product specification of 25 m, while the de‐oiling package has been sized to achieve the regulatory
Balloch Field Development Environmental Statement Section 2 Proposed Development The proposed Balloch development will increase water production rates on GPIII; however, the new profiles will be within the FPSO’s capacity and therefore no PW plant modifications are required as part of the proposed development. Furthermore, to accommodate the PW from Balloch, higher water cut production from Donan and Lochranza may be choked back to optimise the production facilities. Overall, the water balance should remain stable and unaffected by the introduction of Balloch fluids. Recent disposal well interventions have increased well productivity significantly and overboard disposal is not envisaged. However, in an upset condition or well deterioration some overboard disposal may be required. No new sand management facilities are proposed as part of the Balloch development. Completion design will be optimised to minimise sand production. Sand production at the proposed development is likely to be at similar levels to the Donan and Lochranza wells. 2.6.5. CONDENSATE AND GAS PRODUCTION The GPIII topsides have two design modes of operation for treating condensate, which are condensate re‐circulation and condensate extraction and export with gas. The latter has not been commissioned or implemented to date on the GPIII and is not envisaged to be required for Balloch production. This is due to the decline in Donan and Locharanza production relative to the phasing of Balloch wells. Balloch condensate, however, will result in the export gas becoming richer. For the Balloch high profiles, this condensate enrichment could result in exceeding agreed specifications, which are currently approaching their limit. A change in gas export specifications agreements will allow some of the excess condensate to be exported in the gas. Continuous future gas availability for fuel and start up of the GPIII FPSO is uncertain and dependent on the degree of future development. The gas export pipeline is scheduled to change service and become a gas import line as early as Q3 2013 in order to supply fuel gas to NSP and, at some point in the future, GPIII. Maersk Oil have carried out parallel studies on ongoing constraints imposed on current production on the GPIII and have identified strategies to de‐bottleneck any future processing constraints. 2.6.6. UTILITY SYSTEMS The GPIII’s utility systems are summarised in Table 2‐16. 2‐23
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B ‐ 2 Halocarbon release during e
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B ‐ 4 Lube and hydraulic oil spil
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Discharges to Sea Discharge from pi
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Production Phase Environmental Aspe
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B ‐ 10 Drainage water Discharge o
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Physical presence Oil and gas infra
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Major accidental events Other envir
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Environmental Statement - Maersk Oil

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