GEOSCAN, résultats de la recherche


TitreInduced seismicity research project: accomplishments and looking forward / Projet de recherche en sismicité induite : Accomplissements et prochaines étapes
TéléchargerTéléchargement (publication entière)
AuteurKao, H
SourcePublic presentations: Environmental Geoscience Program, current status of research projects, May 2017; par Jacob, N; Ahad, J; Gammon, P; Rivard, C; Kao, H; White, D; Parsons, M; Galloway, J; Commission géologique du Canada, Présentation scientifique 70, 2017 p. 49-63, (Accès ouvert)
ÉditeurRessources naturelles Canada
Documentpublication en série
Mediaen ligne; numérique
Référence reliéeCette publication est contenue dans Jacob, N; Ahad, J; Gammon, P; Rivard, C; Kao, H; White, D; Parsons, M; Galloway, J; (2017). Public presentations: Environmental Geoscience Program, current status of research projects, May 2017, Commission géologique du Canada, Présentation scientifique no. 70
Formatspptx; pdf
ProvinceCanada; Colombie-Britannique; Alberta; Saskatchewan; Manitoba; Ontario; Québec; Nouveau-Brunswick; Nouvelle-Écosse; Île-du-Prince-Édouard; Terre-Neuve-et-Labrador; Territoires du Nord-Ouest; Yukon; Nunavut
SNRC1; 2; 3; 10; 11; 12; 13; 14; 15; 16; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35; 36; 37; 38; 39; 40; 41; 42; 43; 44; 45; 46; 47; 48; 49; 52; 53; 54; 55; 56; 57; 58; 59; 62; 63; 64; 65; 66; 67; 68; 69; 72; 73; 74; 75; 76; 77; 78; 79; 82; 83; 84; 85; 86; 87; 88; 89; 92; 93; 94; 95; 96; 97; 98; 99; 102; 103; 104; 105; 106; 107; 114O; 114P; 115; 116; 117; 120; 340; 560
Lat/Long OENS-141.0000 -50.0000 90.0000 41.7500
Sujetsetudes de l'environnement; effets sur l'environnement; substances polluantes; fracturation hydraulique; géologie du substratum rocheux; lithologie; roches sédimentaires; schistes; ressources pétrolières; hydrocarbures; gaz; sismicité; secousses séismiques; séismologie; risque sismique; sismographes; géologie de l'environnement; géophysique; combustibles fossiles
Illustrationslocation maps; time series; spectra; focal mechanisms; profiles; plots; seismograms
ProgrammeGestion du programme, Géosciences environnementales
Diffusé2017 09 14
Résumé(disponible en anglais seulement)
The development of unconventional oil and gas in North America has caused a significant increase of seismicity in areas of intense injection operations, including both hydraulic fracturing and wastewater disposal. These induced earthquakes have attracted considerable media attention due to their potential seismic hazards. In 2012, NRCan initiated the Induced Seismicity Research (ISR) Activity as part of the Shale Gas Research Project, under the Environmental Geoscience Program, to investigate the possible relationship between hydraulic fracturing (HF) of shale gas and the changing pattern of local seismicity. In 2015, the activity was expanded to a Project to include studies of all injection-related seismic events. NRCan's ISR Project has three major tasks. The first is to improve real-time earthquake-monitoring capability in major shale gas basins where the station coverage of regional seismograph network is sparse. The second is to establish the baseline of regional seismic pattern (i.e., the pre-development reference line) for places where the development potential of unconventional oil and gas is deemed high in the foreseeable future. The third is to conduct targeted studies on significant induced events to understand the relationship between their seismogenesis and man-made operations. In collaborations with many partners, new broadband seismograph stations have been installed in BC, AB, NB, SK, QC, NT, and YT. Studies of local seismicity before, during, and after HF operations have been completed for the northeast BC and western AB, the Moncton and Sussex areas (southern NB), and the Norman Wells area of the central Mackenzie Valley (NT). Regional earthquake baseline is also established for the areas of St. Lawrence Valley and Anticosti Island, QC. An increase of local seismicity in BC and AB is spatially and temporarily correlated with the peak period of injection operations associated with shale gas development. Injection volume appears to play a more important role than injection pressure in causing induced events. No abnormal seismicity can be observed when the injection volume is small. Research results of the largest hydraulic fracturing-induced earthquake to date (the August 17, 2015, Mw 4.6, northern Montney earthquake) indicate that the peak ground acceleration can be as high as 17% g at an epicentral distance of 5 km, suggesting that seismic hazards due to induced seismicity should not be overlooked. Future efforts of NRCan's ISR include the delineation of seismogenic patterns of injection-induced earthquakes and their implications for regional short- and long-term seismic hazards, detailed investigations of induced earthquake source characteristics with a multi-disciplinary approach, and the development and establishment of quantitative models to enhance and improve regulatory performances.