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THE DIFFERENCES IN THE DETECTABILITY OF PERFORATION SHOTS AND MICROSEISMIC EVENTS IN THE SURFACE MONITORING: THE ATTENUATION EFFECT

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10290405" target="_blank" >RIV/00216208:11320/14:10290405 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    THE DIFFERENCES IN THE 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

  • Czech description

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    DC - Seismology, volcanology and Earth structure

  • OECD FORD branch

Result continuities

  • 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

Others

  • Publication year

    2014

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Acta Geodynamica et Geomaterialia

  • ISSN

    1214-9705

  • e-ISSN

  • 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