Changes

==Perforated casing completions==

==Perforated casing completions==

[[File:Methods10_Part9_WellCompletions_Fig3.png|thumb|'''Figure 3.''' Wellbore diagram of (a) a perforated completion and (b) a single completion inside perforated casing.]]

[[File:Charles-l-vavra-john-g-kaldi-robert-m-sneider_capillary-pressure_3.jpg|thumb|'''Figure 3.''' Wellbore diagram of (a) a perforated completion and (b) a single completion inside perforated casing.]]

A '''perforated casing completion''', illustrated in Figure 3a, is the most commonly used completion technique today. The main advantage of this type of completion is that the well can be drilled and logged to total depth prior to running and cementing production casing. By obtaining cores and logs of the potential producing interval, one can estimate the economic value of that wellbore prior to committing funds to complete the well. Another advantage of a perforated casing completion is that it is easier to obtain a good cement job, compared to a liner completion. If the primary cementing job is properly performed, one can selectively produce from and inject into the reservoir and isolate intervals as required. The production of an unconsolidated formation can be accomplished by performing an inside gravel pack. Finally, the perforated casing completion is quite adaptable to multiple completions and alternate completions.

A '''perforated casing completion''', illustrated in [[:Image:Charles-l-vavra-john-g-kaldi-robert-m-sneider_capillary-pressure_3.jpg|Figure 3a]], is the most commonly used completion technique today. The main advantage of this type of completion is that the well can be drilled and logged to total depth prior to running and cementing production casing. By obtaining cores and logs of the potential producing interval, one can estimate the economic value of that wellbore prior to committing funds to complete the well. Another advantage of a perforated casing completion is that it is easier to obtain a good cement job, compared to a liner completion. If the primary cementing job is properly performed, one can selectively produce from and inject into the reservoir and isolate intervals as required. The production of an unconsolidated formation can be accomplished by performing an inside gravel pack. Finally, the perforated casing completion is quite adaptable to multiple completions and alternate completions.

==Single completions==

==Single completions==