Drill stem test is a temporary completion of the well through which hydrostatic pressure of mud logging will be removed from the reservoir and provide required conditions for flow of formation fluids. This specific test may be fulfilled in open wells or during casing process.

Oil Exploration Operations Company acquires drill stem test equipments in three different sizes of 3, 3-7.8 and 5 inches and RTTS equipments in four different sizes of 5, 7, 9-5.8 and 13-3.8 inches.