Pump Down

Impact Selector introduces monitoring and flexibility to pump down operations. See real time cable head tension. Use addressable release tools for multi-stage perforating, or single safety release. And free stuck toolstrings even in the horizontal with a ballistic jar. Combine all of these tools in one string to take greater control.


Real time, downhole, wireline tension measurement to help prevent pump-off, stuck tool strings and expensive fishing operations.

Outside Diameter

2.75 in / 69.85 mm

Made-up Length

2.20 ft / 0.67 m


33.5 lbs / 15.2 kgs

Upper Connection

1-5/8" - 6 ACME Pin

Lower Connection

1-5/8" - 6 ACME Box

Maximum Tension

10,000 lbf

Maximum Compression

2,000 lbf


5 lbf

Sampling Rate

10 Hz

Pressure Rating

20,000 psi

Temperature Rating

350°F / 175°C

Axial Shock (g,ms)

5000, 1.0

Maximum Tensile Load

100,000 lbf

Max. Pass Through Voltage

600 Vdc

Operating Voltage

20 to 50 Vdc

Current Draw

35 mA


  • Accurately measures real time tension, compression line voltage, and internal tool temperature.

  • Plug and Play—no special panels or hardware required.

  • Compatible with Warrior System and commercial perforating switches.

  • No field calibration required.

  • No internal seals or parts to maintain API RP-67 compliance.


    • Maximizes pumpdown efficiency and speed.

    • Minimizes lost time and fishing risk.

    • Deploy longer perforating guns in deviated wells.

    • Verifies plug setting and release.

    • Eliminates uncertainty when activating a cable release device.

      Impact Selector’s SMART Sens is a wireline tension monitoring device which maximizes efficiency and minimizes risk during challenging wireline operations. SMART Sens provides a real time downhole cable tension measurement which eliminates uncertainty and gives the operator increased control.

      Maintaining safe cable tension downhole is challenging in highly deviated and lateral wells because surface measurements do not account for friction. If the cable tension is allowed to become too low, then slack cable and released torque can cause cable damage. If the tension is allowed to become too high, during pump down operations for example, the weak point can be unintentionally broken. Increased visibility of downhole events such as plug setting and perforating guns firing can be valuable also where surface tension readings are inconclusive.

      The SMART Sens is a robust and proven tool which is straightforward to use in the field. “Plug and Play’ compatibility with Warrior means that many service companies can use this tool directly with no additional surface equipment.



      Versatile release tool for use anywhere in a perforating or logging string preventing stuck tools and expensive fishing operations.

      Outside Diameter

      2.75 in / 69.85 mm

      Made-up Length

      32 in / 813 mm


      38 lbs / 17 kgs


      1-5/8" - 6 ACME Pin x Box

      Fishing Method

      2.75 in Overshot

      Pressure Rating

      25,000 psi

      Temperature Rating

      350°F / 175°C

      Tensile Strength

      100,000 lbs / 45,000 kgs

      Shock Rating (g)

      5000, 3 axis minimum

      Max. Pass Through Voltage

      600 Vdc

      Max. Pass Through Current

      3 Amps


      • Ballistic explosive bolt based tool.

      • Compatible with any detonator system with a detonator less than .310 max diameter. Tested with  DynaEnergetics Dynaselect detonators, Austin A-140F detonators, and Teledyne bridgewire detonators.

      • High fishing strength (100klbs).


        • Compatible with jars.

        • Compatible with Warrior Well Logging System and commercial perforating switches.

        • Compatible with E. B. and addressable perforating guns.

        • Split ring design allows the detonator to be removed and replaced within minutes.

          lmpact Selector's Spitfire™ tool uses a detonator initiated Frangible Joint™ to separate itself from the stuck tool string.

          The Frangible Joint gives the tool a high tensile ruling allowing it to be used anywhere in the string. For example, below perforating guns and in conjunction with jars.

          The Spitfire ensures that the cable is retrieved out of the hole each time mitigating stuck tools and expensive fishing operations.


          HI Jar

          The Horizontal Impact Jar is a zero cable tension wireline Jar designed to be used in horizontal wells where conventional jarring tools cannot be deployed.

          Outside Diameter

          3.125 in / 79.38 mm

          Made-up Length

          61 ft / 1.55 m


          102 lbs / 46.3 kgs

          Position in String

          Anywhere in the wireline string,
          Sequential firing required

          Upper Connection

          1-5/8" - 6 ACME (GO B)

          Lower Connection

          1-5/8" - 6 ACME (GO B)

          Fishing Strength

          110,000 lbf

          Impact Force

          1-150 k / lbf
          Surface selectable

          Power Stroke

          8.75 / 222 in / mm

          Pressure Rating

          25,000 / 172.4 psi / MPa

          Max Temperature Rating

          400°F / 200°C
          (detonator limited)

          Min Temperature Rating

          -13°F / -25°C

          Axial Shock (g,ms)

          5000 G

          Max. Pass Through Voltage

          1000 Vdc

          Max. Pass Through Current

          3 A


          • Provides a predictable jarring force up to 150,000lbs.

          • Surface selectable Jar force.

          • Standard addressable perforating switch telemetry with electrical pass-through capabilities.

            • Fishing strength: 110klbf.


            • Hi Jar™ provides high downhole impact at any deviation.

            • The impact will break all plug setting tool shear pins.

            • Detonator can be replaced in minutes due to split ring design.

              The HI Jar™ is a single time intensive gathered energy Horizontal Jar that provides a single jarring force to a stuck tool string.

              Designed to provide a high intensity jarring force in long horizontals where wireline cable tension is not available, the HI Jar™ serves as insurance to break a faulty plug setting tool shear pin, or free a stuck perforating gun.

              It accomplishes this by storing energy in a vacuum chamber that is released using a standard detonator. The wellbore fluid pressure accelerates a piston (and the upper tool string) upward before hitting a hard stop, shocking the lower tool string upward.

              The HI Jar™ will ensure that a stuck tool string is retrieved from the hole each time, preventing stuck tool strings, and expensive fishing operations.



              Pre-job modeling identifies risk and risk reduction strategies.


              • Diagram or hole size.

              • Deviation survey.

              • Fluids / gases in the well.

              • Pressures and Temperatures.


                • Length of each individual tool.

                • Weight of each individual tool.

                • Outer Diameter of each individual tool.

                  Cable Type:

                  • Nominal OD.

                  • Weight in air.

                  • Breaking Strain.

                  • Stretch Coefficient.

                    Tool Specifics:

                    • Target depth.

                    • Operational goals.

                    • Operational limitations.

                      As an integral part of Impact Selector’s Intelligent Conveyance Solutions, pre-job modeling provides the service company and operator with insights into optimum tool string design, wire selection and other operational fundamentals.

                      The results of pre-job modelling such as availability of overpull at target depth can be used to calculate the best setting for an open or cased hole wireline jar to avoid accidental firing when pulling out of hole, but ensure the jar will fire before maximum pull at surface is reached.

                      Impact Selector has conducted in-house testing to measure the friction reduction capabilities of our Roller Bogie and I-Wheel tools when strategically placed along any wireline tool string. When the results of these tests are combined with the ability to reduce the resistive frictional forces of independent tools in a computer model the output clearly demonstrates and quantifies the benefits of roller systems.