Perforation Injection Test Type
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The same methodology used in Perforation Inflow tests applies to a perforation test done in an over-balanced condition, where initial cushion pressure (pwo) > initial reservoir pressure (pi).
In this case, wellbore fluid is injected into the reservoir during the test. The objective is to extract key reservoir parameters (initial reservoir pressure (pi), permeability (k), and skin (s')) from the pressure data.