Shear wave velocity ( Vs) associated with compressional wave velocity ( Vp) can provide accurate data for geophysical study of a reservoir. These so called petroacoustic studies have important role in reservoir characterization objectives such as lithology determination, identifying pore fluid type, and...
A genetic algorithms approach for prediction of compressional and shear wave velocities from petrophysical data: Example from Sarvak carbonate reservoir, Iran. 9th Middle East Geosciences Conference, GEO 2010.RajabiE. Gholampour AhangarS. Mousavi...
Ba J, Zhao J G, Carcione J M, et al. 2016. Compressional wave dispersion due to rock matrix stiffening by clay squirt flow. Geophysical Research Letters, 43(12):6186-6195. doi: 10.1002/2016GL069312. Google Scholar [5] Cai S J, Li H B, Pan H J. 2020. Construction and application...
aFigure 1 Compressional wave velocity model used for the finite difference modelling of a tunnel look-ahead prediction survey. a) Slices of the vpvelocity model within the 3D random medium volume. The evacuated tunnel (blue vpvalues) is surrounded by an excavation damage zone and is approaching...
Banerji [78] proposed that during the early Pliocene, the eastern Bengal Basin, including the CTFB, underwent tectonic changes due to horizontal compressional forces linked to the Himalayan orogeny and the collision of the Eurasian and Indian plates. Consequently, older rocks in the area experienced...
During the dyke intrusion, deformation spread over the eastern flank30. We observe distinctive time-change of velocity associated with the magmatic intrusion. While VPdecreases and VP/VSincreases within the intruding dyke, consistently with a local magma upraise, the P-wave velocity is higher east ...
Wave propagationContinental tectonics: compressionalAmbient-noise records from the AlpArray network are used to measure Rayleigh wave phase velocities between more than 150000 station pairs. From these, azimuthally anisotropic phase-velocity maps are obtained by applying the eikonal tomography method. ...
Models of compressional (V P ) and shear wave (V S ) velocity are obtained from seismological studies and can be interpreted in terms of temperature and composition, using relationship defined through laboratory experiments. These empirical evidences often do not properly account for the effects ...
Model building for depth imaging of PS data is more complicated than for PP data because both compressional and shear velocities are required, and both data types must be input. However, these extra requirements are not only a complication, but also provide an opportunity to build better models...
Seismic surveys have traditionally been limited to acquisition and processing of compressional (P)-wave data, but modern technology includes the use of three-component receivers that can additionally record shear (S) wave modes that have been generated at the surface or converted from P-waves in ...