ST Range of Testing Tools

The ST range of multi-cycle inflatable packer systems features a four-stage operating mechanism that enables packer inflation, annular circulation, interval testing, and complete shut-in isolation. The ST range can be configured as a single packer or a dual packer straddle assembly both with a standard pressure rating of 5,000 psi (10,000 psi version available). Its multi-cycle functionality allows for multiple formation evaluation tests or stimulation cycles to be performed on different zones within a single trip.


Its design features a volume compensated balanced piston that prevents inner-component movement from inducing pressure fluctuations within isolated test zones and allows the ability to accurately record initial shut-in pressure while preventing unintentional formation fractures. This innovation makes the ST range the optimal inflatable packer solution for formation evaluation and well stimulation in open hole or cased hole applications.