Adapt to changes in string length caused by temperature and pressure during drillstem testing. View

Circulate and reverse circulate with a suite of multicycle and single-shot valves. View

Control downhole flow and shut-in with a variety of tester valves to fit your test objectives. View

Shut in the well with pumpthrough flapper or single-ball safety valves. View

Fill and test tubing while running in hole. View

Shake stuck strings loose or quickly release from the packer. View

Set and retrieve packers easily with systems capable of withstanding high flow rates, temperatures, and pressures during testing and perforating. View

Reliably perform ultrahigh-temperature, ultrahigh-pressure reservoir tests. View

Enhance safety during testing operations with a surface-operated hydraulic safety valve. View

Enable downhole reservoir testing in small-casing wells down to 4 1/2-in casing. View