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  1. waterwellguy

    hydropneumatic surge tank

    I am not familiar with surge tank design and need one to protect a deep injection well. Static pressure is 20 psi, operating pressure is 40 psi. I need to protect from water hammer and fluid column seperation. I am told that I need to install a check valve between the surge tank and well, but...
  2. waterwellguy

    1,2-Dichloropropane removal

    Will an air-stripper remove 1,2-Dichloropropane from raw water? I have a well that recently tested 9 ug/L for the stuff. The well produces about 200 gpm. Any idea what an air-stripper costs?
  3. waterwellguy

    Large diameter FRP casing

    I am looking for 24-inch diameter FRP casing for installation in a well. Having trouble finding a manufacturer that will produce 24-inch diameter FRP casing with a threaded connection. Casing will be set to 2,800 feet and must undergo pressure testing every 5 years. Anyone know of a...
  4. waterwellguy

    Large diameter FRP pipe

    I would like to use FRP for the final casing of a well I am designing. I am having trouble locating an FRP manufacturer that makes 24-inch diameter FRP that has a threaded connection. The casing will be set to a depth of approximately 2,800 feet and must undergo pressure testing every 5 years...
  5. waterwellguy

    Pipeline - cathodic protection

    Will cathodic protection protect both the inside and outside of a mild steel pipeline? If not, can you provide a basic explanation about why not?
  6. waterwellguy

    PVC Casing - large diameter/deep applications

    I am looking for materials for a well that will be 24 inches in diameter and about 2800 feet deep. Is fuse welded PVC a reasonable option? Concerns with PVC are cementing issues (low collapse strength), ability to pass pressure test of 150 psi every 5 years, and longevity of the material in...
  7. waterwellguy

    Cathodic protection for deep well

    I am designing a deep injection well and would like to provide cathodic protection to protect against casing corrosion. The well will have casing to 2,750 feet. I will be using seamless, half-inch wall, mild steel casing. Any real challenges to protecting the entire casing string? More...
  8. waterwellguy

    Help with well casing corrosion/buildup

    I have a monitoring well the is 6" in diameter and 2000' deep. It produces water similar to seawater, except high SO4. A black, hard, sulfurry-smelling material has built up on the inside of the casing and choked off flow from the well. The well typically sits idle - pumped about one day a...

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