Shell U.K. E&P, in its effort to reduce the finding cost of oil, continues to foster the evolution and use of multilateral wells and associated new technologies to develop both new and maturing reservoirs in all sectors of the North Sea. Multilateral wells with Technical Advancement of Multilaterals (TAML) junction Levels 1 through 4 have been applied in six fields and will be applied in an additional seven fields by 2001. Multilateral wells have provided a means to optimize slot usage, develop lower-quality reserves commercially within the Brent sequence, and combine appraisal objectives to obtain economical development targets.