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Petroleum Geology Acronyms

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Shear wave slowness (DTS)

This is an abbreviation for a well log used in the oil and gas industry. You could have found the code DTS in your log evaluation software or your corporate datastores. The code stands for 'Shear wave slowness'. This log is often used in the industry.

This log displays readings of the acoustic slowness of a shear wave (Vs); reciprocal of Shear Velocity; a shear wave is a type of seismic wave in which the particle motion is perpendicular to the direction of propagation; also called S-wave or secondary wave. In general this is a measurement 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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