Downhole Test Tools | SLB

Downhole Test Tools

Optimize the test string to meet your test objectives

Two Schlumberger workers reviewing data on a monitor (right) and illustration of the Quartet downhole reservoir testing system downhole (left).

Test string components that bring certainty

Selecting the right equipment for your downhole test string is the key to efficiently meeting your test objectives and, ultimately, accurately characterizing your reservoir.

You’ll be able to design an optimal test string with our downhole test tools, equipment, and expertise for reservoir testing success in any operating environment.

Quartet Downhole Reservoir Testing System

Downhole Test Tool Offerings

  • Slip Joints
    Slip Joints
    Accommodate any changes in testing string length

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

  • circulating and reversing valves
    Circulating and Reversing Valves
    Flow control systems

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

  • Close up of the downhole tester valves.
    Downhole Tester Valves
    Open and shut case for reservoir testing certainty

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

  • downhole safety valves
    Downhole Safety Valves
    Reliable well shut-in for drillstem testing and shoot-and-pull tubing-conveyed perforating

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

  • Pressure Test and Fill-up Valves
    Pressure Test and Fill-Up Valves
    Pressure testing filled or dry pipe and tubing

    Fill and test tubing while running in hole. View

  • jars and safety joints
    Hydraulic Jars and Safety Joints
    Quick, effective response for stuck tools

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

  • Schlumberger workers in the background and CERTIS high-integrity reservoir test isolation system in the foreground.
    Reservoir Testing Packers
    Effective sealing to isolate fluids for better test results

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

  • uHPHT Single-Shot Reservoir Testing Systems
    uHPHT Single-Shot Reservoir Testing Systems
    Simple, rugged, reliable test strings

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

  • E-Z Valve reliable well control tool
    Surface-Controlled Downhole Test Tools
    Fail-safe closure in an emergency

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

  • Schematic of the Slimhole DST tool string
    Slimhole DST String
    Reservoir testing in slim holes

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