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...
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...
Assessment of gas hydrate saturation in marine sediments from resistivity and compressional-wave velocity log measurements in the Mahanadi Basin, India Gas hydrate was recovered in the Mahanadi Basin along the eastern continental margin of India during the India National Gas Hydrate Program (NGHP) Ex...
Some of the examples of seismic modeling include: (1) Convolutional model-based approaches where elastic properties are prepared and convolved with predefined wavelet to create seismic traces at normal incidence at the desired space locations; (2) Wave equation-based approaches where elastic models are...
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...
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...
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 ...
Wide-angle shear wave arrivals, converted from compressional to shear waves at crustal interfaces, enable crustal Vp/Vs ratios to be determined which provi... JD Eccles,RS White,PAF Christie - 《Geophysical Journal International》 被引量: 0发表: 2009年 The Confinement and Breakout of Protostella...
3466017ULTRASONIC WAVE GENERATOR1969-09-09Malvin68/3SS 3453773SELF-DRIVING ROLLING DEVICE1969-07-08Compton et al.446/458 2650872Method and apparatus utilizing compressional wave energy in the upper sonic and supersonic range for washing textiles1953-09-01Goldwasser68/3SS ...
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. ...