Conférences  >  Sciences de la Terre  >  Géophysique et géologie  >  Virtuel (en ligne)

Society of Exploration Geophysicists (SEG)

Elastic anisotropy, widely recognized as a typical feature of sedimentary formations, has a strong influence on seismic velocities and amplitudes. For example, the difference between stacking and vertical velocity in anisotropic media most commonly is the reason for misties in time-to-depth conversion. This course provides the necessary background information regarding anisotropic wave propagation and discusses modeling, inversion, and processing of seismic reflection data in the presence of anisotropy.

Society of Exploration Geophysicists (SEG)

Stimulations of rocks by fluid injections (e.g., hydraulic fracturing) belong to a standard reservoir-development practice. Productions of shale oil, shale gas, heavy oil, and geothermal energy require broad applications of this technology. Production of conventional hydrocarbons, carbon sequestration, saltwater disposal and development of geological gas storages require massive fluid operations in the underground as well. The fact that fluid injections and productions can induce seismicity has been well-established for several decades. Understanding and monitoring of fluid-induced seismicity is necessary for hydraulic characterization of reservoirs, for assessments of reservoir stimulation results and for controlling the seismic risk of underground fluid injections and productions. The course provides systematic quantitative rock-physical and geomechanical fundamentals of these aspects.