all i can say is wow

Snowdin

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I have been on two fracs where this happened.
One was where the casing split 200m below surface and it migrated to surface.
Both were casing failures and partially due to poor cement and H2S corroding the casing. So it does happen, but not as often as some would like you to believe.
The problem if it occurs is usually due to something related to drilling not the frac. And most often bad cement. Whether the wells were frac'd or not, eventually a problem would have come to surface. People just like to blame the frac process because it's a convenient scapegoat that in reality only exposed the problem.
I will say though that shallow gas fracs are more likely to cause water table issues because many are in the 600-1200m depth range and due to the formation make up (usually coal or shales) the high pressures can cause migration of the fractures and gasses outside of the intended frac zone. Communication issues with the water tables and other producing zones are more prevalent in these areas, but they are much different than the high hp fracs that are being mentioned in this thread.

I'm not talking about fluid raining down on the lease due to casing failure. I've seen this happen too. This is not a frac breaching surface this is a casing failure. There has been many thousands of shallow gas well fracs in Southern Alta/Sask and Montana less than 500 meters deep. You would think if a frac is going to reach ground water one would have heard of a frac breaching surface on one of these wells.
 

LBZ

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I'm not talking about fluid raining down on the lease due to casing failure. I've seen this happen too. This is not a frac breaching surface this is a casing failure. There has been many thousands of shallow gas well fracs in Southern Alta/Sask and Montana less than 500 meters deep. You would think if a frac is going to reach ground water one would have heard of a frac breaching surface on one of these wells.

It has happened.
On an NGC frac I was on down by Strathmoore. It migrated to surface about 250m from the wellhead and came out underneath an N2 Queen parked on the edge of location. No major damage except the steel on the tank in that spot got blasted and had to be replaced.
 

deaner

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I think the issue with wells going dry is more from depleting aquifers by using massive amounts of fresh water to frack with. The water table is a very sensitive thing and cant handle trillions of litres being completely taken out of it. It has a cyclical effect that just compounds and gets worse. Hopefully they come up with new technologies to frack in a more efficient manner. Until then I think efforts are being made to use waste water.

My old man is a consultant and was just on a project where they were drilling 3 massive water wells to pump 24/7 into a man made lake......all to be used for fracking. Not good.
 

Riverjet

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