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

Don Field Decommissioning ProgrammeDON-BP-001Glossary of TermsDefinitionsAAlgaeAlternating Current (ac)Various chiefly aquatic, eukaryotic, photosynthetic organisms, rangingin size from single-celled forms to giant kelp.An electrical current where the magnitude of the current varies in acyclical form.BBarrel (bbl) A measurement of oil with one barrel equalling 159 litres,35 imperial gallons, 42 US gallons or 0.159m 3 .BenthicBenthic EpifaunaBenthic InfaunaBenthosBuckleRelating to the bottom of the sea.Organisms living on the seabed.Organisms living in the seabed.Animals living on, in or near the seabed.A pipeline arch upward into the sea or sideways across the bottomdue to the axial compressive force induced by the operatingtemperature and pressure.CCathodic ProtectionCentimetre (cm)Blocks (anodes) attached to steel structures and pipelines to reducecorrosion by sacrificial loss of anode material.A metric unit of distance, equal to 0.01 metre. One centimetre isapproximately 0.394 inches.DDemersalDrill CuttingsDrilling MudDwelling at or near the bottom of the sea.Rock chippings that result from drilling operations.A mixture of clays, chemicals and water pumped down the drill pipeto lubricate and cool the drilling bit, and to flush out the cuttings,strengthen the sides of the hole and contain the downhole pressurewhilst drilling.May 2011iii