Page 266 - Hydrocarbon
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Well Dynamic Behaviour                                                253









                              downhole
                              safety valve






                                               reservoir isolation
                                                   packers









                                                control valves
                                                with sensors
             Figure 10.25  Smart well example.





                         production
                         packer
                                                                   main bore

                         sliding
                         sleeve
                                                                   lateral
                         isolation
                         packer
                         nipple
                         profile

             Figure 10.26  Multilateral example.



             than drilling a new well. If the original wellbore is not abandoned, but only
             temporarily isolated and a sidetrack drilled, production or injection from both
             the sidetrack and original wellbore can be achieved. This is a multilateral. There is
             no limit to how many laterals can be drilled from one bore, though more than five
             laterals are rare. Figure 10.26 shows a two branch multilateral. In this case,
             the completion has been designed to maintain access into the original bore and to
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