Introduction :-
Reserves data were collected from each UKCS operator during January to March 2008. Oil reserves include both oil and the liquids obtained from gas fields. Oil reserves are summed in the Oil Table below at different probability levels to give a range of estimates from proven to the maximum level.The oil reserves presented are in both sanctioned fields (i.e. fields in production or approved fields under development but not yet producing) and other significant discoveries not yet fully appraised. The latter comprise discoveries for which there is an intended field development and a provisional start date. Proven, probable and possible reserves for a large number of individual fields have simply been summed to give the totals shown. There is, thus, a much smaller likelihood that the true figure for total oil reserves is outside the range of estimates than when considering probabilities for an individual field.Cumulative oil production to the end of 2007 has been added to oil reserves (remaining) to give the estimated ultimate recovery figures.Reserves and Estimated Ultimate Recovery in the Oil Table are presented in metric units (million tonnes) to facilitate comparison with other energy resources and the inclusion of natural gas liquids. The figures in the table can be converted to "field units" using the approximate conversion factor of 1 tonne of crude oil = 7.5 barrels.
John Webber
Email: john.webber@berr.gsi.gov.uk
phone: +44 (0) 1224 254069
fax: +44 (0) 1224 254018
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