The differences in detectability of perforation shots and microseismic events in the surface monitoring: the attenuation effect

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F14%3A00429621" target="_blank" >RIV/67985891:_____/14:00429621 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.13168/AGG.2013.0062" target="_blank" >http://dx.doi.org/10.13168/AGG.2013.0062</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.13168/AGG.2013.0062" target="_blank" >10.13168/AGG.2013.0062</a>

Result language

angličtina

Original language name

The differences in detectability of perforation shots and microseismic events in the surface monitoring: the attenuation effect

Original language description

Detection of the seismic signal from perforations or string shots is crucial for calibration of velocity model for surface or downhole monitoring. While in the borehole recordings perforation shots have higher signal to noise ratio of the P-waves than microseismic events, in the surface monitoring recordings it is often opposite. We investigated amplitude spectra of microseismic events and perforation shots in the downhole data and found that amplitude ratios in the band of 20-30 Hz relative to band 100-200 Hz are stronger for the microseismic events. Thus we suggest that detectability of the perforations in surface recorded data is limited by attenuation of the higher frequency signal which increases exponentially with frequency. This suggests that longer duration of calibration shots can improve detectability of string shots at the surface.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DC - Seismology, volcanology and Earth structure

OECD FORD branch

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Project

<a href="/en/project/GAP210%2F12%2F2451" target="_blank" >GAP210/12/2451: Seismicity driven by fluids injection</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Acta geodynamica et geomaterialia

ISSN

1214-9705

e-ISSN

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Volume of the periodical

11

Issue of the periodical within the volume

2

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

6

Pages from-to

159-164

UT code for WoS article

000334581300007

EID of the result in the Scopus database

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