Compressional and shear wave
WebJun 14, 2024 · If reliable compressional-wave velocity, lithology, porosity and water saturation data are available, the precision and accuracy of shear-wave velocity … WebOct 19, 2024 · a longitudinal wave (such as a sound wave) propagated by the elastic compression of the medium —called also compression wave… See the full definition …
Compressional and shear wave
Did you know?
WebMeasurements of compressional and shear wave velocities, V P and V S, were made in a cubic anvil apparatus up to 700° C at 6 kbar in igneous and metamorphic rocks typical of the crust and mantle.Samples range in composition from acidic to ultramafic, with bulk density of 2.67–3.46 g/cm 3 at 6 kbar. Mean atomic weights of the rocks vary between 20.37 and … WebMoreover, the combination of shear wave velocity and compressional wave velocity can provide precise data to study a reservoir from a geophysical perspective. Besides, the application of wave velocities in rock engineering, especially in determining rock properties, and rock- related stress and deformations, has increased in recent years [5, 6
WebMay 20, 2005 · [1] The competing hypotheses for gas hydrate formation at the particle scale in sediments describe processes of pore-filling, frame-building, or cementation. New measurements of compressional (V P) … WebThis experimental study of the generation of shear waves by explosive sources stemmed from Heelan’s theoretical result that pressure acting on the wall of a cylindrical hole in a solid should radiate shear waves quite as effectively as compressional waves. The measurements confirm this expectation, but good overall agreement was not achieved …
WebNov 15, 1999 · By analyzing experimental data we show that in many room-dry rocks, the Poisson's ratio (PR) decreases with decreasing differential pressure (confining … WebFor use in acoustic logging, an acoustic wave transducer system forming both compression and shear waves is disclosed, the system having the preferred form of a plurality of radially directed magnetostrictive expansion means, being N in number, each having a transducer plate affixed to the outer end thereof and further including means for ...
WebFeb 26, 2010 · In this 3-D volume, the grid is designed to have an upper surface (corresponding to the Earth’s surface) that consists of a boundary with a vacuum or very low density fluid above so that surface wave …
WebAug 25, 2024 · Lab measurements of compressional wave (V p) and shear wave (V s) velocities are useful in finding the anisotropy of elastic properties, which helps in reservoir characterization (Riazi et al. 2024). In this paper, our objective is to set up a relation between the dynamic and static elastic properties and fill the void in the datasets to ... meaning of bdlWebJun 24, 2015 · For angles of incidence less than the compressional-wave critical angle (θ c, Fig. 2): Part of the energy is transmitted into the formation in the form of compressional wave (Wave A, Fig. 2) Another part is converted as a (refracted) shear wave (Wave B, Fig. 2) The remainder is reflected back into the mud as a compressional wave (Wave C, … meaning of bclsWebOct 6, 2004 · The shear-wave attenuation is nearly constant as a function of pressure, having average values of about 0.07. The maximum of compressional-wave attenuation occurs at the respective critical porosity for each sample. Velocities and attenuation from this experiment exhibit a systematic pattern in a Q P /Q S vs (V P /V S) 2 representation. meaning of bcsWebLongitudinal waves are waves in which the vibration of the medium is parallel ("along") to the direction the wave travels and displacement of the medium is in the same (or opposite) direction of the wave propagation. … meaning of bcmWebJun 24, 2015 · Shear-wave propagation requires a medium that has shear strength (rigidity). Consequently, shear waves can only travel in solids, not in liquids or gas. In liquids and gas, the shear head-wave generated within the formation is converted into a compressional wave and propagated back across the borehole fluid to the acoustic … meaning of bctWebJun 1, 2024 · Compressional and shear wave velocities (V p and V s respectively) are essential reservoir parameters that can be used to delineate lithology, calculate porosity, … meaning of bcdWebThe next wave, usually, to arrive is the transverse or shear wave (S-Petrophysics MSc Course Notes Sonic (Acoustic) Log Dr. Paul Glover Page 173 ... The velocity of the compressional wave depends upon the elastic properties of the rock (matrix plus fluid), so the measured slowness varies depending upon the composition and microstructure of the ... peats exam