On 10/6/2012 8:02 AM, Randall Pratt wrote:
>
> Just read my newspaper and found out there was a mag 3.3 near
> Williston, ND. The information states there are 10 past quakes known
> in ND with 6 in the NW portion of the state and 2 of them before the
> oil drilling began. This quake was 7 miles from one of 390 disposal
> wells and this well was first injected in May of 2012.
>
> Randy
>
The USGS seems to be allowing this drilling with the idea that if the
pressure of the pumping-in-action is not greater than the pressure in
the well, then everything is OK. This activity (induction of liquids)
is being done to extricate oil and gas and to introduce waste liquids
and carbon dioxide into salt water sources. This is going on in
Colorado, Arkansas, Texas, New York and Pennsylvanian as well; and maybe
to a lesser extent in Indiana, Illinois, Georgia and Alabama. The scheme
of things seems to be to keep the quakes below 3. Most of the wells are
not over 3000 ft so they argue that there is no definitive correlation.
Most of the quakes associated with this activity are between 3 and 7 KM
and if you look at professional descriptions of the quakes they will be
rated as "fair" which I interpret to be that they didn't have all the
normal wave peaks (P, S,etc) where expected ..... thus, not a "normal"
earthquake. I am NOT an authority but I have to suspect that the
fracking process and/or waste disposal is causing lubrication of faults
even deeper than these wellls. Also, quakes of magnitudes of 1 or less
are frequently not logged so they can safely pump without attracting
attention. It is when the pressures are such that they can produce
movement that peoples' attention is aroused. I took over fifty
earthquakes in Arkansas during the swarm a few years back and I found a
drill outfit within 3000 ft of most of the listed epicenters. That's
using Google maps and the epicenter as listed by the Central U.S. web
site....made me feel like a spy to find the drilling equipment sitting
there!
On 10/6/2012 8:02 AM, Randall Pratt
wrote:
Just read my newspaper and found
out there was a mag 3.3
near Williston ,
ND
Randy
The USGS seems to be allowing this drilling with the idea that if
the pressure of the pumping-in-action is not greater than the
pressure in the well, then everything is OK. This activity
(induction of liquids) is being done to extricate oil and gas and to
introduce waste liquids and carbon dioxide into salt water sources.
This is going on in Colorado, Arkansas, Texas, New York and
Pennsylvanian as well; and maybe to a lesser extent in Indiana,
Illinois, Georgia and Alabama. The scheme of things seems to be to
keep the quakes below 3. Most of the wells are not over 3000 ft so
they argue that there is no definitive correlation. Most of the
quakes associated with this activity are between 3 and 7 KM and if
you look at professional descriptions of the quakes they will be
rated as "fair" which I interpret to be that they didn't have all
the normal wave peaks (P, S,etc) where expected ..... thus, not a
"normal" earthquake. I am NOT an authority but I have to suspect
that the fracking process and/or waste disposal is causing
lubrication of faults even deeper than these wellls. Also, quakes
of magnitudes of 1 or less are frequently not logged so they can
safely pump without attracting attention. It is when the pressures
are such that they can produce movement that peoples' attention is
aroused. I took over fifty earthquakes in Arkansas during the swarm
a few years back and I found a drill outfit within 3000 ft of most
of the listed epicenters. That's using Google maps and the epicenter
as listed by the Central U.S. web site....made me feel like a spy to
find the drilling equipment sitting there!