Geoscience Reference
In-Depth Information
BEST PRACTICES
Findings
1.
The DOE Protocol for EGS, which lists seven sequential steps, provides a reason-
able initial model for dealing with induced seismicity that can serve as a template
for other energy technologies.
2.
Based on this initial model, the committee has proposed two matrix-style proto-
cols as examples to illustrate the manner in which these seven activities can ideally
be undertaken concurrently (rather than only sequentially), while also illustrating
how these activities should be adjusted as a project progresses from early planning
through operations to completion.
Gap
No best practices protocol for addressing induced seismicity is generally in place for
each of these technologies, with the exception of the protocol recently developed for EGS.
The committee suggests that best practices protocols be adapted and tailored to each tech-
nology to allow continued energy technology development. Actions toward developing
these protocols are outlined below.
Proposed Actions
1.
A matrix-style “best practices” protocol should be developed in coordination with
the permitting agency or agencies by experts in the field of each energy technology,
including EOR, shale gas production, and CCS.
2.
The adoption and use of such protocols by developers are recommended in each
case where there is a known or substantial probability of inducing seismicity at
levels that could pose a concern to the public. In cases where induced seismicity
becomes an issue at some stage in the project, the developer can adopt the protocol
procedures needed to continue the project in a manner more satisfactory to the
public.
3.
Even with the adoption and use of a best practices protocol, induced seismicity of
serious concern to public health and safety may occur. The regulatory body affiliated
with the permitting of well(s) should include, as part of each project's operation
permit, a mechanism (such as a “traffic light” mechanism) for the well operator to
be able to control, reduce, or eliminate the potential for felt seismic events.
4.
When a traffic light system is to be adopted or imposed to control operations that
may cause unacceptable levels of induced seismicity, full disclosure and discussion
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