Don Field Decommissioning Programme (pdf, 7.8MB) null - BP

DON-BP-001Don Field Decommissioning Programme2 Adjacent FacilitiesThe location of other structures and facilities in the surrounding area of the Don Field areshown in Figure 3.2.Facilities adjacent to the Don Field are listed in Table 3.1.Installation Operator Distance from Don ManifoldThistle Lundin Britain 17km southMurchisonCanadian Natural Resources(UK) Ltd (CNR)8.14km south-eastDunlin Shell 25km southMagnus BP 18km north-westTable 3.1 Adjacent Facilities to the Don FieldThe 20in Northern Leg Gas Pipeline (NLGP) between the Brent Alpha and MagnusInstallations is crossed by the Don production and water injection pipelines andumbilicals approximately 2km from the Don manifold.3 Meteorological Conditions3.1 Wind PatternAlthough winds in the vicinity of the Don Field are highly variable, there are clear trendsin both direction and speed. The predominant wind direction is from the south and west,as shown in Figure 3.3 (sourced from the Meteorological Office, Marine ConsultancyService, Bracknell), with easterly winds being least frequent.Calm periods are relatively infrequent with the majority of winds during summer rangingbetween Beaufort Force 4 and 5, which translates to wind speeds of between 20 and40kph respectively.Winds during winter months (November to March) may occur from any direction and arefrequently greater than Force 7 with maximum wind speeds reaching 160kph.3.2 Water Depth and Wave HeightsThe Don Field seabed gradually deepens to the west. A minimum depth of 163.5mLowest Astronomical Tide (LAT) occurs in the south-east and deepens to a maximumdepth of 166.3m LAT in the west.Background Information3-2 May 2011