Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 48 for “"Induced Seismicity"”.
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Study of induced seismicity for reservoir characterization
… and unconventional reservoirs through passive seismicity. The dissertation is comprised of the development and applications of three new methods, each of which focuses on a different aspect of fractures/faults and the resulting seismicity. In general, the thesis work discusses reservoir …
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Statistical analysis of natural and induced seismicity catalogues
… Ukazujeme však, že katalogy indukované seismicity jsou svých chováním shodné s přírodními zemětřesnými roji. Dále shrnujeme zhodnocení fungování studované skupiny šesti kritérií na odlišení sekvencí mainshock-aftershock a zemětřesných rojů. Poukazujeme na to, že žádné z testovaných …
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Geomechanics of injection-induced seismicity in Illinois basin
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-08-01
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Mathematical and Computational Modeling of Injection-induced Seismicity
… injection in Rangely, Colorado. More recently, induced seismicity has been reported worldwide in connection with many subsurface technologies, including wastewater disposal, natural gas storage, enhanced geothermal systems, and hydraulic fracturing. As a result, there has been a growing public …
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Analysis and modeling of induced seismicity in petroleum reservoirs
Since 1998, a producing oil field in Oman has been experiencing microearthquake activity. The aim of this project is to compare numerical models of wave propagation using simple source representations to a small subset of these microearthquakes, with three goals in mind: 1) to understand whether …
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Monitoring induced seismicity near the Wellington oil field, South-Central Kansas
Seismicity in the United States midcontinent has increased by orders of magnitude over the past decade. Spatiotemporal correlations of seismicity to wastewater injection operations have suggested that injection-related pore fluid pressure increases are inducing the earthquakes. In this …
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Reservoir monitoring using induced seismicity at a petroleum field in Oman
… petroleum reservoir monitoring application using induced seismicity data. The dissertation work is comprised of four major studies, each focusing on a different aspect of induced seismicity. First, methods and issues in location of induced seismicity are discussed, and strategies are proposed for …
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Induced seismicity analysis for reservoir characterization at a petroleum field in Oman
This thesis presents the analysis and interpretation of passive seismic data collected in a 20-month monitoring period. The investigation is divided into four studies, each focusing on a different aspect of the seismic data to infer the reservoir properties. First, I applied three different methods …
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Fracturing processes and induced seismicity due to the hydraulic fracturing of rocks
Hydraulic fracturing is a method used routinely in oil and gas exploitation and in engineered geothermal systems. While used frequently, there are aspects of hydraulic fracturing, such as the propagation of the newly-created fractures and interaction between natural and newly-created fractures, …
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Evaluating Liquefaction Triggering Potential from Induced Seismicity in Oklahoma, Texas, and Kansas
Deep wastewater injection-induced seismicity has led to over a thousand magnitude (Mw) > 3 earthquakes and four Mw>5 earthquakes in Oklahoma, Texas, and Kansas (OTK) over the last ten years. Liquefaction observed following the 3 September 2016, Mw5.8 Pawnee, OK, induced earthquake raises concerns …
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Hydraulic-fracturing induced seismicity in Alberta, Canada: Analysis and interpretation using dense local arrays
… the subsurface, has been observed to trigger induced seismicity in some areas. The Duvernay Formation in Alberta is a target of hydraulic fracturing and has experienced induced earthquakes up to magnitude 4.2. To study hydraulic fracturing-induced seismicity in greater detail, a local dense …
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Injection Induced Seismicity Modeling and Application to the Karapiti Reinjection Area, Wairakei, New Zealand
… and earthquake rupture process in injection induced earthquake areas with a coupled numerical model. The physics based numerical modelling specially designed for injection induced seismicity integrates fluid flow, heat transfer, mechanical deformation and seismic rupture sequences. The …
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Understanding the Relationship between Hydraulic Properties of Rocks and Induced Seismicity in the Stimulation of Enhanced Geothermal Systems
… geothermal reservoir. Typically a large seismicity cloud is generated. The physical mechanisms involved in permeability enhancement and seismicity triggering are numerous, and their relative importance is not always agreed on, which makes designing such operations challenging. The extent …
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Regional-Scale Impacts of Fluid Composition and Geologic Structure for Injection-Induced Seismicity in the Southern U.S. Midcontinent
… Previous studies have convincingly attributed induced seismicity to pore pressure diffusion and solid elastic stressing, both resulting from fluid waste injection. Recent work adds to the physical understanding of injection-induced seismicity by demonstrating that the density differential …
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Time Series Analysis of Surface Deformation Associated With Fluid Injection and Induced Seismicity in Timpson, Texas Using DInSAR Methods
… North America has been linked to an increase in seismicity rate in these regions (Ellsworth, 2013). As fluid is pumped into deep formations, the state of stress within the subsurface changes, potentially reactivating pre-existing faults and/or causing subsidence or uplift of the surface. …
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New technologies for unconventional reservoir characterization: Seismic inversion, focal-time estimation, and signal processing to improve reservoir imaging
… development and to mitigate geohazards such as induced seismicity. Frequently, hydraulic fracture stimulation programs do not go as planned; fractures occur out of zone, depart from the predicted models, and, in some cases, induce felt seismic events (induced by hydraulic fracturing operations). …
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Shear Wave Splitting Analyses in West Texas
… in West Texas to understand crustal stress and induced seismicity. The selected events of ML2.0 are recorded by the TexNet and USArray/Transportable Array (TA) stations. SWS parameters, the fast polarization direction and the delay time, are computed using a semi-automatic algorithm. Only a …
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Numerical simulation of geothermal energy production in the Estevan area using water and CO2 as working fluids
… systems may cause issues, such as water loss and induced seismicity. Recently, CO2 has attracted more interest as an alternative injectant to explore geothermal energy because of its high mobility, thermal properties and the additional benefits of CO2 sequestration. In this study, based on the …
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Hyperbolic Property of Earthquake Networks
… statistical research on robust quantification of seismicity patterns is required for mitigating the devastating impacts of earthquakes. The need for such research is highlighted by increasing population density in large urban areas near major active faults (e.g., Tokyo, Istanbul, Los Angeles, San …
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