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Building an amateur well self potential meter

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rcarabaj

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Building an amateur well self potential meter
Submitted by rcarabaj on Tue, 02/24/2009 - 19:01.

Hello:

I would like to make some experiencies measuring well self potential but with cheap equipment. Did anybody has tried to make it ?.    There is a little water well in the farm to test. I have a set of commercial volt-meters, and some hardware, but have no idea about making test probes and the appropiate circuit to use.

I would appreciate any suggestion.

Thanks very much, My best regards. 

 Roberto

hypocentre

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SP
Tue, 02/24/2009 - 22:59

You can do SP with a simple high impedance milli-voltmeter. The tricky part is the electrodes. In well logging the electrode down hole is on a pad pressed to the borehole wall and compared to a reference electrode at the surface. However, normally the SP effect is generated by ion concentration differences between the drilling mud filtrate and the formation fluid.

Geologists like a nappe between thrusts

rcarabaj

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Thanks very much.
Tue, 03/03/2009 - 14:49

Thanks very much.

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