Poroelastic Properties of the Arbuckle Group in Oklahoma Derived from Well Fluid Level Response to the 3 September 2016<i>M</i>_w 5.8 Pawnee and 7 November 2016<i>M</i>_w 5.0 Cushing Earthquakes

Abstract

Research Article| May 03, 2017 Poroelastic Properties of the Arbuckle Group in Oklahoma Derived from Well Fluid Level Response to the 3 September 2016 Mw 5.8 Pawnee and 7 November 2016 Mw 5.0 Cushing Earthquakes Kayla A. Kroll; Kayla A. Kroll aAtmospheric, Earth and Energy Division, Lawrence Livermore National Laboratory, P.O. Box 808, L‐103, Livermore, California 94551 U.S.A., kroll5@llnl.gov Search for other works by this author on: GSW Google Scholar Elizabeth S. Cochran; Elizabeth S. Cochran bEarthquake Science Center, U.S. Geological Survey, 535 South Wilson Street, Pasadena, California 91106 U.S.A. Search for other works by this author on: GSW Google Scholar Kyle E. Murray Kyle E. Murray cOklahoma Geological Survey, University of Oklahoma, 100 E Boyd Street, Suite N131, Norman, Oklahoma 73019 U.S.A. Search for other works by this author on: GSW Google Scholar Seismological Research Letters (2017) 88 (4): 963–970. https://doi.org/10.1785/0220160228 Article history first online: 15 Sep 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Kayla A. Kroll, Elizabeth S. Cochran, Kyle E. Murray; Poroelastic Properties of the Arbuckle Group in Oklahoma Derived from Well Fluid Level Response to the 3 September 2016 Mw 5.8 Pawnee and 7 November 2016 Mw 5.0 Cushing Earthquakes. Seismological Research Letters 2017;; 88 (4): 963–970. doi: https://doi.org/10.1785/0220160228 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietySeismological Research Letters Search Advanced Search ABSTRACT The Arbuckle Group (Arbuckle) is a basal sedimentary unit that is the primary target for saltwater disposal in Oklahoma. Thus, the reservoir characteristics of the Arbuckle, including how the poroelastic properties change laterally and over time are of significant interest. We report observations of fluid level changes in two monitoring wells in response to the 3 September 2016 Mw 5.8 Pawnee and the 7 November 2016 Mw 5.0 Cushing earthquakes. We investigate the relationship between static strain resulting from these events and the fluid level changes observed in the wells. We model the fluid level response by estimating static strains from a set of earthquake source parameters and spatiotemporal poroelastic properties of the Arbuckle in the neighborhood of the monitoring wells. Results suggest that both the direction of the observed fluid level step and the amplitude can be predicted from the computed volumetric strain change and a reasonable set of poroelastic parameters. Modeling results indicate that poroelastic parameters differ at the time of the Pawnee and Cushing earthquakes, with a moderately higher Skempton's coefficient required to fit the response to the Cushing earthquake. This may indicate that dynamic shaking resulted in physical alteration of the Arbuckle at distances up to ∼50 km from the Pawnee earthquake. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.