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 7 of 7 for “"Time-lapse monitoring"”.
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Modeling Offset-Dependent Reflectivity for Time-Lapse Monitoring of Water-Flood Production in Thin-Layered Reservoirs
Seismic time-lapse monitoring of production is an important tool used to efficiently drain a hydrocarbon reservoir. Repeat seismic surveys may be used, because the seismic method is sensitive to the reservoir fluid. A prominent seismic attribute is the reflectivity (or amplitude) as a function of …
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Geoelectric monitoring of seepage in porous media with engineering applications to earthen dams
A monitoring methodology is developed for investigating seepage and internal erosion in earthen dams with time-lapse measurements of self-potential anomalies associated with conservative salt and non-conservative heat tracer migration in the subsurface. The method allows for 1) detecting seepage …
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STRESS AND FREQUENCY DEPENDENT PROPERTIES OF POROELASTIC ANISOTROPIC ROCK
… in reservoir depletion, fluid injection, time-lapse monitoring, and carbon dioxide sequestration. The effective stress in a poroelastic medium relates to applied pressure and pore pressure, with the Biot parameter (α) as a scaling factor of the pore pressure. This work offers an …
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Integrated geophysical investigation for understanding agriculturally induced landslides in southern Peru
… is best performed with either a sequence of time-lapse data with a start time prior to irrigation onset (i.e., time-lapse monitoring), or, as available here, through co-located geophysical surveys over comparable geology where the influence of anthropogenic activities is not observed (i.e., a …
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Fracture characterization from seismic measurements in a borehole
… and the effect of environmental conditions on time-lapse measurements. We show that DAS is a reliable tool for time-lapse monitoring. Finally, we analyze time-lapse DAS Vertical Seismic Profiling (VSP) data collected during a multi-stage hydraulic fracture treatment of a well drilled into a …
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Applications of Deep Learning to Scientific Inverse Problems
… a motivating example we consider applications to time-lapse monitoring in which geophysicists aim to determine whether changes in data arise on account of evolution in subsurface variabilities (e.g. leaks of supercritical CO2), or arise from uncontrollable conditions encountered during the seismic …
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A Genomic Perspective on Early Embryo Development in Cattle
… competence acquisition, and for the first time in cattle studies, we propose an automated ML model using non-invasive morphokinetic markers to predict and select potentially competent embryos up to 3 days of culture, which will allow for a better understanding of this highly complex process …