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Induced seismicity and seismotectonics of Nadvirna oil and gas area (Ukrainian Precarpathians)
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 15th EAGE International Conference on Geoinformatics - Theoretical and Applied Aspects, May 2016, Volume 2016, p.1 - 5
Abstract
Detailed analysis of seismicity and seismotectonics of Nadvirna oil and gas area (Ukrainian Precarpathians) is made. Association of local earthquakes to the faults, breaks and midwater surfaces of thrusts and folds surrounding structures with oil and gas deposits is revealed and some of the specific characteristics of their foci are analyzed. Local seismicity (activation of which took place in 1996–2012) is regarded as induced, that is, as caused by changes (during the oil and gas production) of hydrodynamic and geomechanical regime of oil and gas bearing and surrounding geological structures the relaxation of tectonic stress which was accumulated in these structures as a result of analyzed regional geodynamic processes.