ABSTRACT While DST is not new to the oil industry, some of the methods of augmenting flow are changing. One of the more recent changes to be accepted is the use of the Jet Pump to improve producing capabilities and make DST more meaningful and more accurate. The Jet Pump is a form of artificial lift being used when the well does not have sufficient bottomhole pressure to flow adequate volumes to the surface to evaluate the reservoir being tested. By running a sliding sleeve above normal DST tools, the Jet can be inserted into the sleeve where it locates, seals, and is locked in place by wireline. The use of mud pumps with water provides the power source to operate the downhole Jet Pump. The Jet Pump has the capability of producing volumes of less than 100 barrels per day (16 cubic meters) to several thousand barrels per day. Since the equipment required (in conjunction with normal DST tools) is minimal, the use of the Jet Pump becomes very attractive, both operational and cost wise. The Jet Pump can handle GLR up to 1,000:1, abrasive fluids, corrosive fluids, low and high volumes.