The Multi-Cycle Shut-In Tool (SIT) has been engineered for improved reliability. In addition to increasing the temperature rating to 165 deg C., our engineers have implemented a double-tier mount system that virtually eliminates shock to the electronics. The Multi-Cycle SIT has proven itself as a valuable tool in tests where wellbore storage or access to location are factors. The reduction in wellbore storage can be an advantage in reducing test time as well as improving data quality for analysis, especially when evaluating the effects of near wellbore damage (skin). The ability to shut-in the well downhole and have it reopen automatically means production need not be lost if the location is not accessible. The design of the tool ensures no flow-through restriction allowing full flow production with the tool downhole. This full flow through capability also reduces the risk of plugging off and lost time or production while equalizing.