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→Multilateral wells
Multilateral wells are wells that have more than one branch radiating from the main borehole (Figure 165). Each branch can drain a separate part of the reservoir and produce into a common single wellbore. The advantage of multilateral wells is that, for the same number of drainage points, they can be somewhat cheaper than if separate wells had been drilled.
Multilateral wells are wells that have more than one branch radiating from the main borehole (Figure 165). Each branch can drain a separate part of the reservoir and produce into a common single wellbore. The advantage of multilateral wells is that, for the same number of drainage points, they can be somewhat cheaper than if separate wells had been drilled.
[[FIGURE 165.]] Multilateral wells in the Tern field, UK North Sea (from Black et al., 1999). Reprinted with permission from the Geological Society.
[[File:M91Figure165.JPG|thumb|300px|FIGURE 165. Multilateral wells in the Tern field, UK North Sea (from Black et al., 1999). Reprinted with permission from the Geological Society.]]
==Coiled tubing drilling==
==Coiled tubing drilling==