Collapsed casing? Any solutions?

Discussion in 'Pumps and Tanks Well Forum & Blog' started by MarkMCM, Jul 1, 2013.

  1. MarkMCM

    MarkMCM New Member

    Messages:
    11
    Location:
    Arlington, TX
    4" pvc cased well.
    200' deep
    static water level 60'
    well is approximately 30 years old.

    Old pump went out and was unable to be pulled, pvc broke at pump. Pump is at the bottom of the well.

    New pump will not go past 100'.

    Well is really unusable due to decreased available water. We have gotten a camera and a spear past the constriction.

    Are there any solutions other than drilling a new well? The two well guys that have been out don't offer anything other than a new hole.
  2. craigpump

    craigpump Member

    Messages:
    897
    Location:
    ct
    My first question is what caused the casing to collapse?

    Did the pump guys try to get a 3" Grundfos pump past the tight spot?
  3. MarkMCM

    MarkMCM New Member

    Messages:
    11
    Location:
    Arlington, TX
    Thanks for the reply. The consensus on the casing problem seems to be minor earthquake activity in the area.

    Nobody mentioned a 3" pump. Could we pull the present pump and use a 3" diameter weight to assess clearance?
  4. craigpump

    craigpump Member

    Messages:
    897
    Location:
    ct
    Yep, I would try a weight 3" in diameter before I bought the 3" pump just to be sure. You might find a pump guy who has a used one you could try too.
  5. Texas Wellman

    Texas Wellman In the Trades

    Messages:
    523
    Location:
    SE Texas-Coastal
    After re-reading your post, I think a 3" pump would probably be the solution. Have your well guy blow the well to see what it makes. I would look for at least 10 GPM before I would mess with the old well, and if it makes any sand or sediment then scrap it.

    Good luck.
    Last edited: Jul 2, 2013
  6. MarkMCM

    MarkMCM New Member

    Messages:
    11
    Location:
    Arlington, TX
    Thanks guys.

    We tried a 3" weighted pipe and got it past the constriction and then...

    We got the new 3" pump (Grundfos 10SQ10-290) to depth and we are back to original flow. That is the good news.

    Bad news. The Pumptec, after running for 5 minutes or so, shows Load and Voltage lights flashing, denoting a "rapid cycle".

    What gives? My well guy says, "Pumptecs don't work on 3"pumps." and "Those 3" pumps don't last very long anyway."

    I find both of those statements hard to believe. HELP! We need to get the Pumptec back in-line.
  7. craigpump

    craigpump Member

    Messages:
    897
    Location:
    ct
    Pump Teks and 3" Grundfos pumps are not compatible, remove the Pump Tek.

    Those little Grundfos pumps are pretty good units, I have seen some go 10 plus years.

    Don't let it run dry.
  8. MarkMCM

    MarkMCM New Member

    Messages:
    11
    Location:
    Arlington, TX
    Any suggestions on pump protection? We have a low pressure cutoff on the line now.
  9. craigpump

    craigpump Member

    Messages:
    897
    Location:
    ct
    I don't think there is anything like a Pump Tek for the 3" Grundfos.
  10. MarkMCM

    MarkMCM New Member

    Messages:
    11
    Location:
    Arlington, TX
    Thanks. I guess we'll see how things go with the low pressure cutoff.
  11. LLigetfa

    LLigetfa DIYer, not in the trades

    Messages:
    3,922
    Location:
    NW Ontario, Canada
  12. MarkMCM

    MarkMCM New Member

    Messages:
    11
    Location:
    Arlington, TX
  13. craigpump

    craigpump Member

    Messages:
    897
    Location:
    ct
    Ask valveman
  14. LLigetfa

    LLigetfa DIYer, not in the trades

    Messages:
    3,922
    Location:
    NW Ontario, Canada
    I tried pinging him but he appears to be offline now.
  15. valveman

    valveman Moderator Staff Member

    Messages:
    4,426
    Location:
    Lubbock, Texas
    Sorry. Traveling. Cycle Sensor works fine with SQ.
  16. MarkMCM

    MarkMCM New Member

    Messages:
    11
    Location:
    Arlington, TX
    That is some encouraging news. Thanks.
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