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|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
Calculations show that, in the frequency range of acoustic logging, the effective attenuation factor of the longitudinal wave may noticeably exceed the attenuation factors of longitudinal waves of the first kind in both matrix and inclusions.
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In this paper, a boundary element formulation in the wave-number space domain for solving the wave equation for a borehole with arbitrary shape in acoustic logging problems is presented.
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This configuration, which is a realistic idealization of an acoustic logging tool suspended in a fluid-filled borehole within a permeable surrounding formation, is of practical importance with a multitude of possible applications in seismo-acoustics.
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A full waveform recording in a borehole during acoustic logging makes it possible to determine the elastic parameters of a medium under in-situ conditions.
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Use of acoustic logging to determine the elastic parameters of rocks in Krivbass open-cut iron mines
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Application of multipole array sonic logging to acid hydralic fracturing
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Multipole array sonic logging tools have widely been employed in Chinese oilfields in recent years.
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Details of Crosshole Sonic Logging testing including proposed testing schedule, when required.
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In the sonic logging frequency range, the time scale of wave propagation may be too short for the pressure to equilibrate.
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Sonic logging is one of the most commonly used non-destructive pile integrity tests for cast-in-place concrete piles, diaphragm walls and barrettes.
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Geostatistical Simulation of Acoustic Log Data for Seismic Depth Conversion
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Since the early 1980s, various researchers have attempted to implement techniques to determine Q from single-hole full waveform acoustic log data.
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Later, the sonic log data from the field are used to compute the full wave-field response using the reflectivity method and compared with the field data.
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Measurements of velocities by Sonic log in wells drilled for oil in the Cambay basin yielded values, ranging from 4.8 to 5.1 km/sec.
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While Sonic log velocities compare well with field refraction measurements, published values for trap basalt determined in the laboratories in India by various workers indicate a consistently high value of 6.6-7.2 km/sec.
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Conventional methods of analyzing sonic log data do not always yield accurate information on each velocity segment of a well.
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The basic data are the digital gamma (γ) ray and sonic log data.
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