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  • Well Tools and Accessories

    Complete the job with these Geoprobe® Monitoring Well accessories:

    Well Development Tool
    Once your 2.0 in. prepacks are installed, you need to develop the well properly. The new 2.0-in. Well Development Tool is equipped with a flexible polyurethane collar to help surge water into and out of the screen during the development process. The development tool attaches to nominal 0.5-in. PVC riser so it can be lowered into the well and efficiently raised and lowered to surge and purge the well. Movement of water into and out of the screen provides for better development and removal of fines around the well interval. A check valve in the tool allows you to purge water from the well while surging to help remove the fines and provide for good hydraulic communication between the well and formation. It's best to develop segments of the screen and move up and down through the screen interval repeatedly to achieve adequate development. Review ASTM Standard D 5521 for additional guidelines and information on well development techniques and purposes.
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    29149
    US Patent 6,868,904

     

    2.0 in. Well Development Tool Operation
    Step 1
    Step 2
    Step 3

    Valve Closed
    Downstroke of tool surges groundwater into formation. Work incrementally up and down through the screen interval.

    Valve Closed
    Upstroke of tool surges groundwater and fines from formation into the well.

    Valve Open
    Start with valve open and purge to establish flow into the well. Oscillation of tool pumps groundwater from well.

     
     
     

    Tubing Check Valves
    Choose from a variety of sizes for your specific groundwater sampling needs. Constructed of either stainless steel or PVC. The check valve is fully captured in the body of the valve so you don’t lose the ball! Great for cleaning out and developing small-diameter direct push tools and wells prior to either sampling or slug testing.


    GW4240 ... for 0.25 in. ID Toolsimage

     

    Well Covers

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    Well Plugs, Locking

     

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    Well Plugs, Non-Locking

     

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    More Geoprobe® Prepack Parts and Accessories are available.
    Check with your favorite Geoprobe® Technical Service Representative for order details or see the Geoprobe® Source Book.

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