Profile: Horizontal Well Testing Ltd. offers drill stem testing and plug logging services. Our drill stem test is a temporary completion of a potential zone in an open drill hole, normally with the drilling rig on location, and taking place after the well has been drilled to total depth. Typically two packers are used to isolate a zone, one below and one above. The packers are inflated against the well bore and form a seal. The test string is then manipulated to open and close valves that allow the zone to flow into the well bore, into the test tool, and up the drill pipe to surface. We provide a light intervention evaluation tool for horizontal well bore logging and testing services.