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Line 30: + + + + − + − In certain cases, multiple completions may provide the best control of reservoir operations. Multiple completions include the [[tubing-casing dual]], [[dual tubing strings]], and the typical triple completion consisting of three tubing strings. Figures [[:File:Well-completions_fig4.png|4]] and [[:File:Well-completions_fig5.png|5]] illustrate these multiple completions. − − [[File:Well-completions_fig5.png|thumb|'''Figure 5.''' Wellbore diagram of a conventional triple completion.]]
→Multiple completions
==Multiple completions==
==Multiple completions==
<gallery mode=packed heights=200px widths=200px>
Well-completions_fig4.png|'''Figure 4.''' Wellbore diagram of (a) a casing-tubing dual completion and (b) a completion with dual packers and dual tubing strings.
Well-completions_fig5.png|'''Figure 5.''' Wellbore diagram of a conventional triple completion.
</gallery>
[[File:Well-completions_fig4.png|thumb|left|'''Figure 4.''' Wellbore diagram of (a) a casing-tubing dual completion and (b) a completion with dual packers and dual tubing strings.]]
In certain cases, multiple completions may provide the best control of reservoir operations. Multiple completions include the [[tubing-casing dual]], [[dual tubing strings]], and the typical triple completion consisting of three tubing strings. [[:File:Well-completions_fig4.png| Figures 4]] and [[:File:Well-completions_fig5.png|5]] illustrate these multiple completions.
The more complex the completion, the more trouble one can expect in both completion operations and in subsequent [[Workovers|workover operations]]. Multiple completions should be considered only in special situations. These situations include areas where [[drilling costs]] are very high or where the area allocated for drilling wells is at a premium. Such areas include offshore areas, highly populated areas, and remote land locations.
The more complex the completion, the more trouble one can expect in both completion operations and in subsequent [[Workovers|workover operations]]. Multiple completions should be considered only in special situations. These situations include areas where [[drilling costs]] are very high or where the area allocated for drilling wells is at a premium. Such areas include offshore areas, highly populated areas, and remote land locations.