I have tried every op amp circuit I can imagine as a preamp.

Yet I can not rid a small DC drift which is either related to
ambient AC noise level or DC drift of resistance or
thermocouple voltage related to the soldering of junctions.

This DC drift is related to the 24 hour cycle.

The dc drift is on the order of microvolts
which seem to be originating on the input.

The overall DC gain is 80Dbv or X10000.

I should be able to achive a DC free drift at this gain.

I am using a op177G op amp ??

The sensor is HS10-1 Geophone.

The 40 foot of cable is designed for burial
it has silicon grease (I think) impregnated and
has a heavy copper jacket.

It is soldered at the geophone and also at the sensor
has soldered connections.

Reply to this only if you have dealt with such an issue yourself.
I do not want speculations since I swear I have tried
every Uncompensated DC design I can imagine with not being able
to stop this drift. No matter what the design the drift is
the same increasing from morning to afternoon to the + plus
and returning to adjusted baseline in the evening.
The only remaining scheme is a capacitor input AC design ??
Which i did not want to do.

At the moment I rely upon Winquake to filter out the 24 hour DC drift.
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