Profile: Northstar Drillstem Testers is a global oilfield service company. We specialize in drillstem testing and downhole tool service in the area of well testing & reservoir evaluation. We support oil & gas companies in making critical decisions that accelerate exploration timelines, prove reserves by producing hydrocarbons, and maximize available reserves. We offer various services including drillstem testing, real time & downhole tool services, sampling and analysis. Drillstem testing (DST) is a procedure to determine the productive capacity, pressure, permeability or extent of an oil or gas reservoir. It is essentially a flow test, which is performed on isolated formations of interest to determine the fluids present and the rate at which they can be produced. Typical drillstem tests consist of several flow and shut in (pressure buildup) periods, during which reservoir data is recorded. We maintain complete open hole and cased hole inventory of service tools such as packers, bridge plugs & running tools designed for zone isolation, stimulation, well control & production for international evaluation & completions programs. Our complete tool inventory and professional support have international experience in open or cased hole programs in the area of production, injection, zone isolation, acidizing, well control & stimulation. We offer a sampler drainage service, which expedites the analysis process. This service includes the opening and draining of the sampler & delivery to a lab of the client's choice, where analysis will be conducted.