Re: OT-WELL ideas please

Posted by T_Bone on August 07, 2005 at 04:26:54 from (4.240.39.236):

In Reply to: Re: OT-WELL ideas please posted by Richard H. on August 06, 2005 at 11:30:26:

Hi Richard,

I think without getting a better idea of what the problem is, your going to be even guessing more. You can tell alot of what's happening in the well shaft with a disc on a 1/8" rope. I think you need to identifiy where the static head is in relanship to the bottom of the bore. Then a timed pump would tell you even more. I think that will give you an idea of the problem.

I would not send anything down the bore that can rotate and get hung up on the shaft wall unless that's the last best effort before giving up. This would be the same reason why a driller will not mess with a unknown bore.

Look at the problem from how the well works. You drill a bore hole down to water bearing sand & gravel, then you case the bore so sand and gravel can't run into the bore with the water flowing into the bore. The water standing in the bore, the static head, then is pumped to the surface to use while at the same time water keeps trying to refill the bore.

When you pump the bore at a rate that the water can't not keep up flowing into the bore, then you have just determined the flow rate of the well over a given time period or gpm of the well.

To keep the sand & gravel from getting into the bore, we use a perferated pipe wrapped in fine screen. In 75yrs you can imagine that the perferated pipe and screen has to be getting weak from the water eating away at it and the bore could be colasping. This disc could give you an idea if this was the problem vs using a small diameter pipe to find bottom.

Could be your aquifer that your pumping in has dropped. Comparring your new well to your old well would tell you this.

Another problem is when you drill a deep bore then set the pump shallow in the bore allowing fine silt to build in the bottom of the bore thus loosing static head. If it has been shallow pumped then this could be your problem. A homemade baler then could tell you this and also resolve the problem.

T_Bone

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