From: everything-list@googlegroups.com
[mailto:everything-list@googlegroups.com] On Behalf Of meekerdb
Sent: Sunday, November 17, 2013 11:43 AM
To: everything-list@googlegroups.com
Subject: Re: Our Demon-Haunted World
On 11/16/2013 12:51 PM, Chris de Morsella wrote:
Dry rock geothermal certainly does have a big upside potential - there is a
whole lot of heat just a few miles below the ground, but it is not as easy
or simple as you seem to think it is. For example in a lot of dry areas
water supply becomes a gating factor that puts a limit on scalability - this
also applies to Canadian tar sands and shale gas plays - water requirements
will place a limit on how much it can scale; on the maximum annual rates of
extraction that can be achieved.
>>Water use is also, or should be, a limiting factor on fracking for oil
extraction.
Yes it is and it should be factored into the projections. Drillers are
discovering that the fracked reservoirs they engineer - by hydraulic
fracturing -- to extract the oil (or gas) need to be re-fracked in just a
few years because of buildup of salt and other deposits in the
micro-fissures. requiring yet more water.
Chris
Brent
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