A drill stem test (DST) is a procedure that determines the pressure, permeability and productive capacity of a geological formation while drilling a well. The test is crucial in measuring pressure behavior at the drill stem and is an effective way of obtaining data on the formation fluid, and determining whether a well has found a commercial hydrocarbon reservoir. Drill stem testing can be applied in the following ways: 1. Cased Hole stimulation This testing is done after the well is cased and u