Record details

Title
    Non-double-couple mechanisms of microearthquakes induced by hydraulic fracturing
Author
    Cornet, F. H.
    Eisner, L.
    Hill, D. P.
    Šílený, Jan
Language
    anglicky
Publication type
    článek v odborném periodiku
Source title - serial
    Journal of Geophysical Research
Vol./nr.
    Roč. 114, B8
Year
    2009
Notes
    Projekt: GA205/09/0724, GA ČR3cav_un_auth*0252832
    Projekt: IAA300120502, GA AV ČR3cav_un_auth*0000907
    Projekt: MTKI-CT-2004-517242, EC, XE3cav_un_auth*0250446
    Rozsah: 15 s.
    Výzkumný záměr: CEZ:AV0Z30120515
Subject category
    hydraulic fracturing
    microearthquakes
    source mechanisms
Keyword
    Fracturing
    Hydraulic
    Induced
    Mechanisms
    Microearthquakes
    Non-double-couple
Abstract (in english)
   We have inverted polarity and amplitude information of representative microearthquakes to investigate source mechanisms of seismicity induced by hydraulic fracturing in the Carthage Cotton Valley, east Texas, gas field. With vertical arrays of four and eight three-component geophones in two monitoring wells, respectively, we were able to reliably determine source mechanisms of the strongest events with the best signal-to-noise ratio. Our analysis indicates predominantly non-double-couple source mechanisms with positive volumetric component consistent with opening cracks oriented close to expected hydraulic fracture orientation.
Contributor
    AV ČR Brno, Geofyzikální ústav
Contributor code
    AV ČR, GFÚ
Source format
    U
Import date
    9. 12. 2013