About: THE DIFFERENCES IN THE DETECTABILITY OF PERFORATION SHOTS AND MICROSEISMIC EVENTS IN THE SURFACE MONITORING: THE ATTENUATION EFFECT     Goto   Sponge   NotDistinct   Permalink

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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.
  • 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. (en)
Title
  • THE DIFFERENCES IN THE DETECTABILITY OF PERFORATION SHOTS AND MICROSEISMIC EVENTS IN THE SURFACE MONITORING: THE ATTENUATION EFFECT
  • THE DIFFERENCES IN THE DETECTABILITY OF PERFORATION SHOTS AND MICROSEISMIC EVENTS IN THE SURFACE MONITORING: THE ATTENUATION EFFECT (en)
skos:prefLabel
  • THE DIFFERENCES IN THE DETECTABILITY OF PERFORATION SHOTS AND MICROSEISMIC EVENTS IN THE SURFACE MONITORING: THE ATTENUATION EFFECT
  • THE DIFFERENCES IN THE DETECTABILITY OF PERFORATION SHOTS AND MICROSEISMIC EVENTS IN THE SURFACE MONITORING: THE ATTENUATION EFFECT (en)
skos:notation
  • RIV/00216208:11320/14:10290405!RIV15-MSM-11320___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • I, P(GAP210/12/2451)
http://linked.open...iv/cisloPeriodika
  • 2
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 11437
http://linked.open...ai/riv/idVysledku
  • RIV/00216208:11320/14:10290405
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • Detectability; Frequency domain; Attenuation; Microseismic processing (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • CZ - Česká republika
http://linked.open...ontrolniKodProRIV
  • [EA4C5BCDFBA7]
http://linked.open...i/riv/nazevZdroje
  • Acta Geodynamica et Geomaterialia
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 11
http://linked.open...iv/tvurceVysledku
  • Eisner, Leo
  • Einšpigel, David
http://linked.open...ain/vavai/riv/wos
  • 000334581300007
issn
  • 1214-9705
number of pages
http://localhost/t...ganizacniJednotka
  • 11320
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