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Petroleum Geology Acronyms


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Slowness from compressed semblance (surface) (PKSLOW)

This is a well log used in the oil and gas industry. The acronym PKSLOW can be found in any (ASCII) log files provided by the logging company. The abreviatin stands for 'Slowness from compressed semblance (surface)'. This log is not often acquired after (or during) drilling a well.

This log helps to evaluate the time it takes for a compressional wave to traverse a fixed distance; reciprocal of Compressional Velocity. At a higher level, this can be seen as a measure of the interval transit time (The travel time of a wave over a unit distance, hence the reciprocal of wave velocity).

This log usually has the unit 'Acoustic Slowness'. This is the time interval per unit length, Delta-T, necessary to attenuate a traveling acoustic wave. Applies to all types of Delta-T: Compressional, Shear and Stoneley.

Data for this log is produced by a tool that uses a acoustic logging technique and can be used to investigate the acoustic slowness of the formation. Similar logs are listed below:




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