WebNov 14, 2016 · Compressional V p and shear V s velocities measurements were taken out on fluid-saturated shale and limestone obtained from the Ewekoro quarry of Southern Nigeria sedimentary basin at constant differential pressure of 50 MPa with porosities ranging from 0.32 to 0.53% and 0.01 to 0.35 for limestone and shale, respectively, while the … WebDec 1, 2024 · Full-wave sonic logging was used to characterize the shallow compressional wave and shear wave velocity profiles in the site. Anomalous values of the Poisson’s ratio derived from the velocity profiles suggested that the boreholes might have traversed slow formations (i.e. with shear wave velocity smaller than the borehole fluid compressional ...
Acoustic Logging & Sonic While Drilling SLB
WebA wedge fracture is the most common type of compression fracture. It usually occurs in the front of the cylinder-shaped vertebra, causing the front of the vertebra to collapse but … WebSep 25, 2024 · In addition, in this empty pipe case, both compressional and shear excitations provide similar sensitivity to the given mechanical changes. 4.2. Stagnant Water. As the first measurement with liquid-boundary conditions, the pipe is filled with stagnant water. Either a pair of compressive or shear transducers are used for compressional or … heloisa mallmann cappellari
A Simple Method to Estimate Shear-Wave Velocity - ResearchGate
WebS-wave polarization direction, on the other hand, is sensitive to both compressional and shear wave speeds. Combining the P- and S- polarization directions measured by principal component analysis, therefore, provides estimates of both P- and S-wave speeds at shallow depths, for example, the top hundred metres. http://seismology.harvard.edu/research/polarization.html Web爱词霸权威在线词典,为您提供compressional的中文意思,compressional的用法讲解,compressional的读音,compressional的同义词,compressional的反义 … heloisa linda