A test of the well’s producing potential usually done during the initial completion phase. Test made to determine the daily rate of oil, gas, and water production. Production testing is carried out after electric logging, especially if the results of these are not conclusive. The testing may last a couple of weeks, cost considerable money and is meant to provide further details of the main gas content and subsurface information.

A combination of a potential test and a bottomhole pressure test the purpose of which is to determine the effects of different flow rates on the pressure within the producing zone of the well to establish physical characteristics of the reservoir and to determine the maximum potential rate of flow.