期刊
MARINE ENVIRONMENTAL RESEARCH
卷 129, 期 -, 页码 219-228出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.marenvres.2017.05.008
关键词
North sea; Benthos; Drill cuttings; Decommissioning; Recovery
资金
- Oil Gas UK
- UK's Natural Environmental Research Council [NE/L008165/1]
- NERC [NE/L008165/1, NE/M007235/1] Funding Source: UKRI
- Natural Environment Research Council [NE/M007235/1, NE/L008165/1] Funding Source: researchfish
Despite its long history of hydrocarbon exploitation, the United Kingdom lacks scientific protocols to monitor ecological impacts of drill cuttings (mixtures between rocky material excavated from wells and drilling mud). The present study used the UK Benthos industry database to apply standardised variance partitioning and measure the scale and persistence of these effects at 19 sites across the UK sector of the North Sea. Generally, effects were limited to within 1 km from the platform, but two platforms historically drilled with oil-based mud were impacted up to 1.2 km away. Impacts persisted for at least 6-8 years in the northern and central North Sea, but were undetectable in the south where cuttings piles do not accumulate. This study underpins new recommendations to implement regional, phase-based approaches to drill cuttings monitoring, and to apply a precautionary approach in considering decommissioning options that will minimise disturbance to cuttings piles. (C) 2017 The Authors. Published by Elsevier Ltd.
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