We can detect microseismic events from nearby
observation wells or in some circumstances, from the treatment
well itself. Monitoring from the treatment well allows
the measurement of trapped-mode acoustic emissions, which
directly measure azimuths of the open fractures. Treatment
well detectors can also see shear-slip events away from the
borehole. Ideally, a hydro-frac monitoring network would
include detectors in both treatment and observation wells.
VSFusion’s expertise in microseismic monitoring uses
state-of-the-art technology in seismic processing of acoustic
events for quantitative results.
Leading acquisition QA and processing tools
- SmartPick for semi-automated data QA
- Smart monitoring for real-time processing and remote
follow-up
- SeisTool for advanced signal processing and 3-D
location of events
Unique quantitative reports
- Network sensitivity maps to show detection probabilities
- Location uncertainty maps to illustrate event location
statistical reliability
- Event density and maximum emitted energy maps to
assist in interpretation
- Seisplay 4-D dynamic event
maps with tagged magnitude (energy) levels to show
fracture volume development
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Shear-slip event locations map fracture volume
and distribution
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Acoustic emissions map open-fracture azimuths
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Treatment well receivers record events during pressure fall-off reduced noise conditions.
Adapted from Parotidis et al. (GRL, 2004)
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