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Ryan M. Pollyea
Virginia Tech
GeomorphologyGeologyBasaltCarbon sequestrationGeophysics
29Publications
7H-index
140Citations
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Publications 36
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Injection-induced earthquakes are now a regular occurrence across the midcontinent United States. This phenomenon is primarily caused by oilfield wastewater disposal into deep geologic formations, which induces fluid pressure transients that decrease effective stress and trigger earthquakes on critically stressed faults. It is now generally accepted that the cumulative effects of multiple injection wells may result in fluid pressure transients migrating 20–40 km from well clusters. However, one ...
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#1Ryan M. Pollyea (VT: Virginia Tech)H-Index: 7
#2Martin C. Chapman (VT: Virginia Tech)H-Index: 17
Last. Hao Wu (VT: Virginia Tech)H-Index: 2
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Oilfield wastewater disposal causes fluid pressure transients that induce earthquakes. Here we show that, in addition to pressure transients related to pumping, there are pressure transients caused by density differences between the wastewater and host rock fluids. In northern Oklahoma, this effect caused earthquakes to migrate downward at ~0.5 km per year during a period of high-rate injections. Following substantial injection rate reductions, the downward earthquake migration rate slowed to ~0...
1 CitationsSource
#1Richard S. Jayne (VT: Virginia Tech)H-Index: 2
#2Hao Wu (VT: Virginia Tech)H-Index: 2
Last. Ryan M. Pollyea (VT: Virginia Tech)H-Index: 7
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1 CitationsSource
#1Stephen E. Laubach (University of Texas at Austin)H-Index: 30
#2R. H. LanderH-Index: 16
Last. Laura J. Pyrak-Nolte (Purdue University)H-Index: 28
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4 CitationsSource
#1Richard S. Jayne (VT: Virginia Tech)H-Index: 2
#2Yingqi Zhang (LBNL: Lawrence Berkeley National Laboratory)H-Index: 1
Last. Ryan M. Pollyea (VT: Virginia Tech)H-Index: 7
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1 CitationsSource
#1Richard S. Jayne (VT: Virginia Tech)H-Index: 2
#2Hao Wu (VT: Virginia Tech)H-Index: 2
Last. Ryan M. Pollyea (VT: Virginia Tech)H-Index: 7
view all 3 authors...
Abstract To understand the implications of permeability uncertainty in basalt-hosted CCS reservoirs, this study investigates the feasibility of industrial-scale CCS operations within the Columbia River Basalt Group (CRBG). It is generally accepted that plausible constraints on in situ fracture-controlled permeability distributions are unknowable at reservoir scale. In order to quantify the effects of this permeability uncertainty, stochastically generated and spatially correlated permeability di...
2 CitationsSource
#1Ryan M. PollyeaH-Index: 7
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#3Richard S. JayneH-Index: 2
Last. Ryan M. PollyeaH-Index: 7
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#1Hao WuH-Index: 2
#3Richard S. JayneH-Index: 2
Last. Ryan M. PollyeaH-Index: 7
view all 3 authors...
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2 CitationsSource
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