Seismic monitoring of CO2-EOR operations in the Texas Panhandle and southern Kansas using surface seismometers
Rattachement africain : us. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
Injection of carbon dioxide (CO2) into depleted oil reservoir is an advantageous tertiary recovery method as it allows for the long-term storage of CO2 in the empty pore spaces resulting from the removal of in situ pore fluid. Several instances of induced earthquakes have been noticed around enhanced oil recovery (EOR) sites. To mitigate the risk of potential seismic hazards, continuous seismic monitoring of active CO2-EOR site is of significant importance. To that end, we analyzed surface seismic data recorded at two EOR sites located in the Texas Panhandle and southern Kansas, respectively. We identified 160 discrete seismic events in Farnsworth, Texas and 112 events in Wellington, Kansas that strongly differs from traditional microseismic events. These events are characterized by low frequency content (1-5 Hz) and longer time duration that lasts for 30-60 seconds for data recorded in Farnsworth and several minutes long for Wellington data. We found missing records for these earthquakes from regional earthquake catalogs and data from independent seismic network suggesting a localized source of deformation as the cause of low frequency events observed in this study. We compared the location of low frequency events with the field scale reservoir model for CO2 plume and pore pressure variation in Farnsworth and found spatial overlap with four events. As a majority of the low frequency events are located outside the region encompassing pore pressure changes due to CO2 injection in Farnsworth, we think that they are perhaps related to small scale tectonic deformation or complex subsurface fracturing triggered by other nearby injection activities that are currently functional. We are working to locate the low frequency events identified in Wellington, Kansas for further comparison with the reservoir model and CO2-EOR activity. Presentation Date: Tuesday, September 17, 2019 Session Start Time: 1:50 PM Presentation Start Time: 4:20 PM Location: 301B Presentation Type: Oral
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Seismic monitoring of CO2-EOR operations in the Texas Panhandle and southern Kansas using surface seismometers
- Date Crossref
- 01/08/2019
- Éditeur
- Society of Exploration Geophysicists
- Type
- proceedings-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
-
Leidos (United States) pays non établi dans la noticeEntreprise
-
National Energy Technology Laboratory pays non établi dans la noticeStructure de recherche
-
University of Pittsburgh Department of Geology and Environmental Science pays non établi dans la noticeUniversité ou école supérieure
-
University of Houston Department of Earth and Atmospheric Sciences pays non établi dans la noticeUniversité ou école supérieure
-
New Mexico Institute of Mining and Technology pays non établi dans la noticeUniversité ou école supérieure
-
University of Kansas Department of Geology pays non établi dans la noticeUniversité ou école supérieure
-
Petroleum Recovery Research Center pays non établi dans la noticeStructure de recherche
Leidos (United States), National Energy Technology Laboratory et Department of Geology and Environmental Science — University of Pittsburgh, avec 4 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.