Oil wells, empty ones, what's down there?

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Offline Europan Ocean

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Oil wells, empty ones, what's down there?
« on: 07/04/2013 23:50:27 »
Empty oil wells, no longer being pumped, what's down there? Geologically, what is down there apart from oil. If we could send down a probe or actually go there, shed a light, dig, excavate... what could one find?

Are there shells, salt, shale, coal, things of interest or secondary use?

I must say, the history is amazing, to think so long ago, it was the surface and a field, for centuries!

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Offline JimBob

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Re: Oil wells, empty ones, what's down there?
« Reply #1 on: 08/04/2013 02:07:33 »
all of these except perhaps the secondary use items. If I knew of a use for salty water with contaminants I would be the richest man in the world, considering how many wells I have evaluated and/or caused to be drilled in 50+ years. It is still fun.
The mind is like a parachute. It works best when open.  -- A. Einstein

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Offline evan_au

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Re: Oil wells, empty ones, what's down there?
« Reply #2 on: 08/04/2013 10:15:12 »
Oil wells are often abandoned as "uneconomic" when only half of the oil is removed.
Perhaps when the price goes up, and drilling/recovery techniques improve, the well may be reactivated to get out a bit more oil...

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Offline JimBob

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Re: Oil wells, empty ones, what's down there?
« Reply #3 on: 09/04/2013 01:50:56 »
all of these except perhaps the secondary use items.

Evan - you are blowing secrets.  These days, new fields are damned hard to find. A goodly majority of  my present projects are re-drills or re-enterys.
The mind is like a parachute. It works best when open.  -- A. Einstein