Characteristics of fluid-induced resonances observed during microseismic monitoring
- Author(s)
- Jean-Baptiste Tary, Mirko van der Baan, Bruce Sutherland, David W. Eaton
- Abstract
Three groups of resonances are observed during a two-stage hydraulic experiment recorded by 12 three-component geophones. The injected fluid is composed of a slurry of mostly water and proppant plus some supercritical nitrogen. Resonance characteristics are estimated using an autoregressive model. Three resonance models are investigated: fluid-filled cracks, nonlaminar fluid flow, and repetitive events in terms of anticipated resonance frequencies, quality factors, and amplitudes. The observed resonances are very stable and positively correlated with either the slurry flow or the nitrogen injection rate, which is in contradiction with the repetitive events and fluid-filled crack models, respectively. Resonances obtained by numerical simulations of an unstable jet agree with the main characteristics of most observed resonances. Our observations suggest that variations in resonance frequencies are mainly driven by variations in fluid flow, whereas quality factors are more sensitive to the fluid composition through variations in nitrogen injection rate. This study also suggests that resonance frequencies and quality factors can provide complementary information for real-time monitoring of fluid injection into reservoirs, for hydraulic stimulations, geothermal operations, carbon capture, and storage or fluid movement during volcano eruptions.
- Organisation(s)
- Department of Meteorology and Geophysics
- External organisation(s)
- University of Alberta, University of Calgary
- Journal
- Journal of Geophysical Research
- Volume
- 119
- Pages
- 8207-8222
- No. of pages
- 16
- ISSN
- 0148-0227
- DOI
- https://doi.org/10.1002/2014JB011263
- Publication date
- 11-2014
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 105106 Geodynamics, 105122 Seismic, 105102 General geophysics
- ASJC Scopus subject areas
- Geochemistry and Petrology, Geophysics, Earth and Planetary Sciences (miscellaneous), Space and Planetary Science
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/characteristics-of-fluidinduced-resonances-observed-during-microseismic-monitoring(d43a76e6-243e-4dbd-abbf-a489a853845d).html